2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2995
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2158
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Showing posts with label Circuit/System Testing. Show all posts
Showing posts with label Circuit/System Testing. Show all posts
Monday, December 21, 2020
Saturday, December 19, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2938
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2938
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2130
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2130
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Thursday, December 3, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2563
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2563
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 4 Performance Test Status
* Pressure Control Solenoid Valve 4 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 4 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
P2723
DTC P2723 or P2724
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 4 Performance Test Status
* Pressure Control Solenoid Valve 4 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 4 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
P2723
DTC P2723 or P2724
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
Thursday, November 26, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2385
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2385
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 3 Performance Test Status
* Pressure Control Solenoid Valve 3 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 3 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the Q8, K71 control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
6L50/6L80/6L90 - Automatic Transmission
DTC P0969-P0971
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0969
- Clutch Pressure Control (PC) Solenoid 3 System Performance
DTC P0970
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage
DTC P0971
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness electrical connector, and the Q8 control solenoid valve assembly
electrical connector.
5. Ignition ON, verify with a scan tool the following test status parameters display OK:
* Pressure Control Solenoid Valve 3 Performance Test Status
* Pressure Control Solenoid Valve 3 Control Circuit High Voltage Test Status
* Pressure Control Solenoid Valve 3 Control Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
* Replace the Q8, K71 control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and
Relearning) for replacement, setup, and programming.
6L50/6L80/6L90 - Automatic Transmission
DTC P0969-P0971
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0969
- Clutch Pressure Control (PC) Solenoid 3 System Performance
DTC P0970
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage
DTC P0971
- Clutch Pressure Control (PC) Solenoid 3 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Saturday, November 21, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2266
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2266
Circuit/System Testing
1. Ignition ON, test for 8.3-9.3 V between the automatic transmission output shaft speed sensor ignition circuit terminal A and ground.
瀚慖f less than the specified range, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the control solenoid valve assembly.
瀚慖f greater than the specified range, test the ignition circuit for a short to voltage. If the circuit tests normal, replace the control solenoid
valve assembly.
2. Ignition Off, connect the red lead of J 38522 to the signal circuit terminal B and the black lead to the ignition circuit terminal A.
3. Adjust the J 38522 to 8 V, the Frequency to 120 Hz and the Percent Duty Cycle to 50 percent.
4. Ignition ON, verify the scan tool Transmission OSS parameter is between 100-400 RPM.
瀚慖f not within the specified range, test the signal circuit for a short to voltage short to ground open/high resistance. If the circuit tests
normal, replace the control solenoid valve assembly.
5. If all circuits test normal, test or replace the B14A Automatic Transmission Output Shaft Speed Sensor.
Component Testing
Perform the Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test (See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Output Speed Sensor Replacement (See: Powertrain Management/Transmission Control Systems/Sensors and Switches - Transmission and
Drivetrain/Sensors and Switches - A/T/Transmission Speed Sensor/Service and Repair/2ML70 - Automatic Transmission) for B14A
Automatic Transmission Output Shaft Speed Sensor replacement
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly
replacement, setup, and programming
6L50/6L80/6L90 - Automatic Transmission
DTC P0722 or P0723
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0722
- Output Speed Sensor (OSS) Circuit Low Voltage
DTC P0723
- Output Speed Sensor (OSS) Intermittent
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Testing
1. Ignition ON, test for 8.3-9.3 V between the automatic transmission output shaft speed sensor ignition circuit terminal A and ground.
瀚慖f less than the specified range, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the control solenoid valve assembly.
瀚慖f greater than the specified range, test the ignition circuit for a short to voltage. If the circuit tests normal, replace the control solenoid
valve assembly.
2. Ignition Off, connect the red lead of J 38522 to the signal circuit terminal B and the black lead to the ignition circuit terminal A.
3. Adjust the J 38522 to 8 V, the Frequency to 120 Hz and the Percent Duty Cycle to 50 percent.
4. Ignition ON, verify the scan tool Transmission OSS parameter is between 100-400 RPM.
瀚慖f not within the specified range, test the signal circuit for a short to voltage short to ground open/high resistance. If the circuit tests
normal, replace the control solenoid valve assembly.
5. If all circuits test normal, test or replace the B14A Automatic Transmission Output Shaft Speed Sensor.
Component Testing
Perform the Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test (See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Output Speed Sensor Replacement (See: Powertrain Management/Transmission Control Systems/Sensors and Switches - Transmission and
Drivetrain/Sensors and Switches - A/T/Transmission Speed Sensor/Service and Repair/2ML70 - Automatic Transmission) for B14A
Automatic Transmission Output Shaft Speed Sensor replacement
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly
replacement, setup, and programming
6L50/6L80/6L90 - Automatic Transmission
DTC P0722 or P0723
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0722
- Output Speed Sensor (OSS) Circuit Low Voltage
DTC P0723
- Output Speed Sensor (OSS) Intermittent
Diagnostic Fault Information
Typical Scan Tool Data
Monday, November 16, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2144
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2144
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. Ignition ON, test for B+ between the B+ circuit terminal B and ground.
瀚慖f less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the BPP Circuit Signal data parameter displays released.
瀚慖f not the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Connect a 3A fused jumper between the B+ circuit terminal B and the signal circuit terminal A. Verify the BPP Circuit Signal data parameter
displays applied.
瀚慖f not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
ECM.
5. If all circuits test normal, test or replace the stop lamp switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. With the brake pedal released, test for infinite resistance between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
3. With the brake pedal released, test for less than 1.0 ohm between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
4. With the brake pedal applied, test for less than 1.0 ohm between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
5. With the brake pedal applied, test for infinite resistance between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Stop Lamp Switch Replacement (With Adjustable Pedals) (See: Lighting and Horns/Brake Light Switch/Service and Repair/Stop Lamp
Switch Replacement (With Adjustable Pedals))Stop Lamp Switch Replacement (Without Adjustable Pedals) (See: Lighting and
Horns/Brake Light Switch/Service and Repair/Stop Lamp Switch Replacement (Without Adjustable Pedals))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P0575
DTC P0575
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0575
- Cruise Control Switch Signal Circuit
Circuit/System Description
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage signal. The BCM sends a serial
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. Ignition ON, test for B+ between the B+ circuit terminal B and ground.
瀚慖f less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the BPP Circuit Signal data parameter displays released.
瀚慖f not the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Connect a 3A fused jumper between the B+ circuit terminal B and the signal circuit terminal A. Verify the BPP Circuit Signal data parameter
displays applied.
瀚慖f not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
ECM.
5. If all circuits test normal, test or replace the stop lamp switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
2. With the brake pedal released, test for infinite resistance between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
3. With the brake pedal released, test for less than 1.0 ohm between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
4. With the brake pedal applied, test for less than 1.0 ohm between terminal A and terminal B at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
5. With the brake pedal applied, test for infinite resistance between terminal C and terminal D at the stop lamp switch.
瀚慖f not the specified value, replace the stop lamp switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Stop Lamp Switch Replacement (With Adjustable Pedals) (See: Lighting and Horns/Brake Light Switch/Service and Repair/Stop Lamp
Switch Replacement (With Adjustable Pedals))Stop Lamp Switch Replacement (Without Adjustable Pedals) (See: Lighting and
Horns/Brake Light Switch/Service and Repair/Stop Lamp Switch Replacement (Without Adjustable Pedals))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P0575
DTC P0575
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0575
- Cruise Control Switch Signal Circuit
Circuit/System Description
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage signal. The BCM sends a serial
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2107
Circuit/System Testing
Verify none of the following conditions exist:
P0506
* Excess deposits in the Q38 throttle body. Refer to Throttle Body Cleaning (See: Powertrain Management/Fuel Delivery and Air
Induction/Throttle Body/Service and Repair/Procedures)
* Restricted exhaust
* Mechanical conditions that limits engine speed
* Parasitic load on the engine-For example, a transmission condition, a belt driven accessory condition.
瀚慖f a condition is found, repair as necessary.
P0507
* Vacuum leaks
* A throttle valve that does not close correctly
* Verify the correct operation of the crankcase ventilation system. Inspect for the following conditions:
- The routing of the positive crankcase ventilation (PCV) system
- Vacuum leaks in the PCV system-Refer to Crankcase Ventilation System Inspection/Diagnosis (See: Powertrain Management/Emission
Control Systems/Positive Crankcase Ventilation/Testing and Inspection)
瀚慖f a condition is found, repair as necessary.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
P0513
DTC P0513
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0513
- Theft Deterrent Key Incorrect
Circuit/System Description
The theft deterrent module (TDM) sends the prerelease password to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the TDM. Both the ECM and TDM perform a calculation on this challenge. If the calculated response from the TDM equals
the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC
The calculated response from the TDM does not equal the calculation performed by the ECM.
Action Taken When the DTC Sets
* The security indicator will illuminate.
* Vehicle starting will be disabled.
Conditions for Clearing the DTC
* A current DTC P0513 will be cleared when a valid calculation is received.
Circuit/System Testing
Verify none of the following conditions exist:
P0506
* Excess deposits in the Q38 throttle body. Refer to Throttle Body Cleaning (See: Powertrain Management/Fuel Delivery and Air
Induction/Throttle Body/Service and Repair/Procedures)
* Restricted exhaust
* Mechanical conditions that limits engine speed
* Parasitic load on the engine-For example, a transmission condition, a belt driven accessory condition.
瀚慖f a condition is found, repair as necessary.
P0507
* Vacuum leaks
* A throttle valve that does not close correctly
* Verify the correct operation of the crankcase ventilation system. Inspect for the following conditions:
- The routing of the positive crankcase ventilation (PCV) system
- Vacuum leaks in the PCV system-Refer to Crankcase Ventilation System Inspection/Diagnosis (See: Powertrain Management/Emission
Control Systems/Positive Crankcase Ventilation/Testing and Inspection)
瀚慖f a condition is found, repair as necessary.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
P0513
DTC P0513
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0513
- Theft Deterrent Key Incorrect
Circuit/System Description
The theft deterrent module (TDM) sends the prerelease password to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the TDM. Both the ECM and TDM perform a calculation on this challenge. If the calculated response from the TDM equals
the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC
The calculated response from the TDM does not equal the calculation performed by the ECM.
Action Taken When the DTC Sets
* The security indicator will illuminate.
* Vehicle starting will be disabled.
Conditions for Clearing the DTC
* A current DTC P0513 will be cleared when a valid calculation is received.
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2103
Circuit/System Testing
1. Ignition ON, engine OFF.
2. Seal the EVAP system using the Purge/Seal function with a scan tool.
3. Start the engine.
4. Observe the FTP sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 volts after 90 seconds.
瀚慖f the Fuel Tank Pressure Sensor parameter is greater than the specified range, replace the EVAP canister purge solenoid valve.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Evaporative Emission Canister Purge Solenoid Valve Replacement (See: Powertrain Management/Emission Control Systems/Evaporative
Emissions System/Canister Purge Solenoid/Service and Repair)
P0506
DTC P0506 or P0507
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC P0506
- Idle Speed Low
DTC P0507
- Idle Speed High
Circuit/System Description
The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor located in the throttle body drives the
throttle blade. In order to decrease idle speed, along with spark and fuel delivery changes the ECM commands the throttle closed reducing air flow
into the engine and the idle speed decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass
the throttle plate.
Conditions for Running the DTC
* DTCs P0068, P0101, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0171, P0172, P0174,
P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0221, P0222, P0223, P0300-P0308, P0351-P0358, P0461-
P0463, P0496, P0502, P0503, P0606, P0722, P0723, P0806-P0808, P1516, P2066-P2068, P2101, P2135, P2227-P2230 are not set.
* The engine is operating for at least 60 s.
* The engine is idling for greater than 10 s.
* The barometric pressure (BARO) is greater than 70 kPa (11 psi).
* The engine coolant temperature (ECT) is greater than 60掳C (140掳F).
* The intake air temperature (IAT) is warmer than -20掳C (-4掳F).
* The vehicle speed is less than 3 km/h (2 mph).
* The commanded engine speed is steady within 25 RPM.
* The transmission is not changing gears.
* The torque converter clutch (TCC) is not changing states.
* The manual transmission clutch pedal position is between 20-88 percent - If equipped.
* The manual transmission clutch is not depressed - If equipped.
* The power take-off (PTO) is not active - If equipped.
* The transfer case is not in 4WD Low - If equipped.
* A scan tool output control is not active.
* The system voltage is between11-18 V.
* DTC P0506 and P0507 run continuously when the above conditions are met for greater than 10 s.
Conditions for Setting the DTC
Circuit/System Testing
1. Ignition ON, engine OFF.
2. Seal the EVAP system using the Purge/Seal function with a scan tool.
3. Start the engine.
4. Observe the FTP sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 volts after 90 seconds.
瀚慖f the Fuel Tank Pressure Sensor parameter is greater than the specified range, replace the EVAP canister purge solenoid valve.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Evaporative Emission Canister Purge Solenoid Valve Replacement (See: Powertrain Management/Emission Control Systems/Evaporative
Emissions System/Canister Purge Solenoid/Service and Repair)
P0506
DTC P0506 or P0507
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC P0506
- Idle Speed Low
DTC P0507
- Idle Speed High
Circuit/System Description
The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor located in the throttle body drives the
throttle blade. In order to decrease idle speed, along with spark and fuel delivery changes the ECM commands the throttle closed reducing air flow
into the engine and the idle speed decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass
the throttle plate.
Conditions for Running the DTC
* DTCs P0068, P0101, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0171, P0172, P0174,
P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0221, P0222, P0223, P0300-P0308, P0351-P0358, P0461-
P0463, P0496, P0502, P0503, P0606, P0722, P0723, P0806-P0808, P1516, P2066-P2068, P2101, P2135, P2227-P2230 are not set.
* The engine is operating for at least 60 s.
* The engine is idling for greater than 10 s.
* The barometric pressure (BARO) is greater than 70 kPa (11 psi).
* The engine coolant temperature (ECT) is greater than 60掳C (140掳F).
* The intake air temperature (IAT) is warmer than -20掳C (-4掳F).
* The vehicle speed is less than 3 km/h (2 mph).
* The commanded engine speed is steady within 25 RPM.
* The transmission is not changing gears.
* The torque converter clutch (TCC) is not changing states.
* The manual transmission clutch pedal position is between 20-88 percent - If equipped.
* The manual transmission clutch is not depressed - If equipped.
* The power take-off (PTO) is not active - If equipped.
* The transfer case is not in 4WD Low - If equipped.
* A scan tool output control is not active.
* The system voltage is between11-18 V.
* DTC P0506 and P0507 run continuously when the above conditions are met for greater than 10 s.
Conditions for Setting the DTC
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 93
Circuit/System Testing
Important: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion to the following requires
repair or replacement of the affected component/connector:
* Driver steering wheel air bag
* SDM module
* Driver steering wheel air bag wiring harness connector
* SDM wiring harness connector
The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with
an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate
properly.
1. Verify that the driver steering wheel air bag connector and CPA are engaged.
瀚慖f the above condition is not found, make the appropriate repair.
2. Ignition OFF, disconnect the harness connector at the driver steering wheel air bag.
3. With the appropriate load tool adaptor, connect J 38715-A in place of the driver steering wheel air bag.
4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
瀚慖f the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A, reconnect the harness connector at the
driver steering wheel air bag, and cycle the ignition ON. If the DTC resets after reconnecting the air bag, then replace the driver steering
wheel air bag.
5. Ignition OFF, disconnect J 38715-A and the adaptor.
6. Disconnect the driver steering wheel air bag coil in-line connector.
7. With the appropriate load tool adaptor, connect special tool J 38715-A.
8. Ignition ON, with a scan tool, verify DTC is set as current.
瀚慖f DTC is not set or is set as history, replace the driver steering wheel air bag coil.
9. Ignition OFF, disconnect special tool J 38715-A and the adaptor.
10. Disconnect the harness connector at the SDM.
11. Ignition ON, test for less than 1 volt between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
12. Test for less than 1 volt between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f less than the specified value, test the circuit for a short to ground.
14. Test for infinite resistance between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f less than the specified value, test the circuit for a short to ground.
15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.
Circuit/System Testing
Important: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion to the following requires
repair or replacement of the affected component/connector:
* Driver steering wheel air bag
* SDM module
* Driver steering wheel air bag wiring harness connector
* SDM wiring harness connector
The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with
an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate
properly.
1. Verify that the driver steering wheel air bag connector and CPA are engaged.
瀚慖f the above condition is not found, make the appropriate repair.
2. Ignition OFF, disconnect the harness connector at the driver steering wheel air bag.
3. With the appropriate load tool adaptor, connect J 38715-A in place of the driver steering wheel air bag.
4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
瀚慖f the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A, reconnect the harness connector at the
driver steering wheel air bag, and cycle the ignition ON. If the DTC resets after reconnecting the air bag, then replace the driver steering
wheel air bag.
5. Ignition OFF, disconnect J 38715-A and the adaptor.
6. Disconnect the driver steering wheel air bag coil in-line connector.
7. With the appropriate load tool adaptor, connect special tool J 38715-A.
8. Ignition ON, with a scan tool, verify DTC is set as current.
瀚慖f DTC is not set or is set as history, replace the driver steering wheel air bag coil.
9. Ignition OFF, disconnect special tool J 38715-A and the adaptor.
10. Disconnect the harness connector at the SDM.
11. Ignition ON, test for less than 1 volt between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
12. Test for less than 1 volt between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f greater than the specified range, test the circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f less than the specified value, test the circuit for a short to ground.
14. Test for infinite resistance between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f less than the specified value, test the circuit for a short to ground.
15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.
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Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the infrared module.
2. Ignition OFF, test for less than 5.0 ohms between the ground circuit terminal 12 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, rear audio ON, test for 10.0-11.0 volts between the supply voltage circuit terminal 4 and ground.
瀚慖f less than the specified range, test the voltage supply circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the rear audio/HVAC module.
瀚慖f greater than the specified range, test the voltage supply circuit for a short to voltage. If the circuit tests normal, replace the rear
audio/HVAC module.
4. If all circuits test normal, replace the infrared module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Audio System Transceiver Module Replacement (See: Accessories and Optional Equipment/Radio, Stereo, and Compact
Disc/Radio/Stereo/Service and Repair/Audio System Transceiver Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Rear Audio/HVAC Module replacement, setup,
and programming
B1453
DTC B1453
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1453 01
- Run and Crank/On and Start Power Circuit - Short to Battery
DTC B1453 06
- Run and Crank/On and Start Power Circuit - Short to Ground or Open
Diagnostic Fault Information
Circuit/System Description
The Run and Crank/On and Start Power signal connects the Serial Data Gateway Module (SDGM) along with numerous other modules to the
vehicle 12-volt system through a fused relay in the fuse block - underhood. This relay is closed by the Body Control Module (BCM) based on the
key being in either the Run or Crank position.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
B1453 01
Ignition is in ACC position.
B1453 06
Ignition is in RUN position.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the infrared module.
2. Ignition OFF, test for less than 5.0 ohms between the ground circuit terminal 12 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, rear audio ON, test for 10.0-11.0 volts between the supply voltage circuit terminal 4 and ground.
瀚慖f less than the specified range, test the voltage supply circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the rear audio/HVAC module.
瀚慖f greater than the specified range, test the voltage supply circuit for a short to voltage. If the circuit tests normal, replace the rear
audio/HVAC module.
4. If all circuits test normal, replace the infrared module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Audio System Transceiver Module Replacement (See: Accessories and Optional Equipment/Radio, Stereo, and Compact
Disc/Radio/Stereo/Service and Repair/Audio System Transceiver Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Rear Audio/HVAC Module replacement, setup,
and programming
B1453
DTC B1453
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1453 01
- Run and Crank/On and Start Power Circuit - Short to Battery
DTC B1453 06
- Run and Crank/On and Start Power Circuit - Short to Ground or Open
Diagnostic Fault Information
Circuit/System Description
The Run and Crank/On and Start Power signal connects the Serial Data Gateway Module (SDGM) along with numerous other modules to the
vehicle 12-volt system through a fused relay in the fuse block - underhood. This relay is closed by the Body Control Module (BCM) based on the
key being in either the Run or Crank position.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
B1453 01
Ignition is in ACC position.
B1453 06
Ignition is in RUN position.
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Circuit/System Testing
Important: This DTC can be set by either the radio or the amplifier. If the DTC was set by the radio, diagnose the appropriate audio
output circuits to the speakers or the low level inputs to the amplifier (if equipped). If the DTC was set by the amplifier, diagnose audio
output signals to the speakers from the amplifier. If equipped with rear seat audio (RSA) (U42), the RSA must be turned off to perform
proper speaker testing.
Without Amplifier
1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
3. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
4. If all circuits test normal, replace the speaker.
DTC Set By The Radio UQA
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with U42
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
Circuit/System Testing
Important: This DTC can be set by either the radio or the amplifier. If the DTC was set by the radio, diagnose the appropriate audio
output circuits to the speakers or the low level inputs to the amplifier (if equipped). If the DTC was set by the amplifier, diagnose audio
output signals to the speakers from the amplifier. If equipped with rear seat audio (RSA) (U42), the RSA must be turned off to perform
proper speaker testing.
Without Amplifier
1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
3. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
4. If all circuits test normal, replace the speaker.
DTC Set By The Radio UQA
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with U42
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
Monday, August 31, 2020
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Circuit/System Testing
Perform the Liftgate Calibration (Except Avalanche and EXT Escalade) (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Testing
and Inspection/Programming and Relearning). The liftgate module should learn the travel limits, exit the calibration mode, and B1019 00 will
become a history code.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for LGM replacement, setup and programming
Vehicle Access
DTC B1023
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B1023 00
- Integral Switch Performance
Circuit/System Description
The driver door switch (DDS) and front passenger door switch (PDS) each contain switches that control power door lock and window functions.
The DDS also contains the control switch for the power outside rear view mirrors. These switches are integrated within the door control modules
and are not serviceable as separate components. The DDS and PDS monitor these switch inputs for internal faults and set B1023 00 if any are
detected.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
The DDS or PDS detects multiple or simultaneous inputs from a window or door lock switch.
Action Taken When the DTC Sets
The DDS or PDS ignores inputs from the malfunctioning switch.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Circuit/System Testing
Perform the Liftgate Calibration (Except Avalanche and EXT Escalade) (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Testing
and Inspection/Programming and Relearning). The liftgate module should learn the travel limits, exit the calibration mode, and B1019 00 will
become a history code.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for LGM replacement, setup and programming
Vehicle Access
DTC B1023
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B1023 00
- Integral Switch Performance
Circuit/System Description
The driver door switch (DDS) and front passenger door switch (PDS) each contain switches that control power door lock and window functions.
The DDS also contains the control switch for the power outside rear view mirrors. These switches are integrated within the door control modules
and are not serviceable as separate components. The DDS and PDS monitor these switch inputs for internal faults and set B1023 00 if any are
detected.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
The DDS or PDS detects multiple or simultaneous inputs from a window or door lock switch.
Action Taken When the DTC Sets
The DDS or PDS ignores inputs from the malfunctioning switch.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Friday, August 28, 2020
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 298
Circuit/System Testing
1. Ignition OFF, disconnect the X2 harness connector at the LGM.
2. Test for less than 1 ohm between the ground circuit terminal 6 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the
B+ circuit fuse is open, replace the LGM.
4. Ignition OFF, connect the X2 harness connector and disconnect the X3 harness connector at the LGM.
5. Test for less than 15 ohms between the control terminal 1 at the LGM and ground.
瀚慖f greater than the specified range, replace the LGM.
6. Test for less than 15 ohms between the control terminal 2 at the LGM and ground.
瀚慖f greater than the specified range, replace the LGM
7. Install a 15A fused jumper wire between the control circuit terminal 1 at the liftgate motor assembly and 12 volts. Momentarily install a
jumper wire between the control circuit terminal 2 at the liftgate motor assembly and ground. The liftgate motor should perform the OPEN or
CLOSE function.
瀚慖f the function does not perform as specified, replace the liftgate motor assembly.
8. Install a 15A fused jumper wire between the control circuit terminal 2 and 12 volts. Momentarily install a jumper wire between the control
circuit terminal 1 and ground. The liftgate motor should perform the CLOSE or OPEN function.
瀚慖f the function does not perform as specified, replace the liftgate motor assembly.
9. If all circuits test normal, replace the LGM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Liftgate Close Actuator Motor Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Motor/Service
and Repair/Liftgate Close Actuator Motor Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for LGM replacement, setup, and programming
B396B
DTC B396B
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC B396B 01
- Liftgate Motor Clutch Control Circuit Short to Battery
DTC B396B 02
- Liftgate Motor Clutch Control Circuit Short to Ground
DTC B396B 04
- Liftgate Motor Clutch Control Circuit Open
Diagnostic Fault Information
Circuit/System Testing
1. Ignition OFF, disconnect the X2 harness connector at the LGM.
2. Test for less than 1 ohm between the ground circuit terminal 6 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the
B+ circuit fuse is open, replace the LGM.
4. Ignition OFF, connect the X2 harness connector and disconnect the X3 harness connector at the LGM.
5. Test for less than 15 ohms between the control terminal 1 at the LGM and ground.
瀚慖f greater than the specified range, replace the LGM.
6. Test for less than 15 ohms between the control terminal 2 at the LGM and ground.
瀚慖f greater than the specified range, replace the LGM
7. Install a 15A fused jumper wire between the control circuit terminal 1 at the liftgate motor assembly and 12 volts. Momentarily install a
jumper wire between the control circuit terminal 2 at the liftgate motor assembly and ground. The liftgate motor should perform the OPEN or
CLOSE function.
瀚慖f the function does not perform as specified, replace the liftgate motor assembly.
8. Install a 15A fused jumper wire between the control circuit terminal 2 and 12 volts. Momentarily install a jumper wire between the control
circuit terminal 1 and ground. The liftgate motor should perform the CLOSE or OPEN function.
瀚慖f the function does not perform as specified, replace the liftgate motor assembly.
9. If all circuits test normal, replace the LGM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Liftgate Close Actuator Motor Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Motor/Service
and Repair/Liftgate Close Actuator Motor Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for LGM replacement, setup, and programming
B396B
DTC B396B
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC B396B 01
- Liftgate Motor Clutch Control Circuit Short to Battery
DTC B396B 02
- Liftgate Motor Clutch Control Circuit Short to Ground
DTC B396B 04
- Liftgate Motor Clutch Control Circuit Open
Diagnostic Fault Information
Tuesday, August 25, 2020
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 226
Circuit/System Testing
Important: Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician
Safety Information).
When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of
the affected component/connector:
* Front end sensor
* SDM module
* Front end sensor wiring harness connector
* SDM wiring harness connector
1. Ignition OFF, disconnect the harness connector at the appropriate sensor.
2. Disconnect the harness connector at the SDM.
3. Ignition ON, test for less than 1 volt between the following signal circuit and ground.
* Right front end sensor terminal 1
* Left front end sensor terminal 1
* Right front side impact sensor terminal B
* Left front side impact sensor terminal B
* Right rear side impact sensor terminal B
* Left rear side impact sensor terminal B
瀚慖f greater than the specified range, test the circuit for a short to voltage.
4. Ignition ON, test for less than 1 volt between the low reference circuit and ground.
* Right front end sensor terminal 2
* Left front end sensor terminal 2
* Right front side impact sensor terminal A
* Left front side impact sensor terminal A
* Right rear side impact sensor terminal A
* Left rear side impact sensor terminal A
瀚慖f greater than the specified range, test the circuit for a short to voltage.
5. Test for infinite resistance between the signal circuit and ground.
* Right front end sensor terminal 1
* Left front end sensor terminal 1
* Right front side impact sensor terminal B
* Left front side impact sensor terminal B
* Right rear side impact sensor terminal B
* Left rear side impact sensor terminal B
瀚慖f less than the specified value, test the circuit for a short to ground.
6. Test for less than 1 ohm between the following signal circuit terminals.
* Right front end sensor terminal 1 and SDM terminal 37.
* Left front end sensor terminal 1 and SDM terminal 36.
* Right front side impact sensor terminal B and the SDM terminal 43.
* Left front side impact sensor terminal B and the SDM terminal 42.
* Right rear side impact sensor terminal B and the SDM terminal 45.
* Left rear side impact sensor terminal B and the SDM terminal 44.
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
7. Test for less then 1 ohm between the following front end sensor low reference circuit terminals.
* Right front end sensor terminal 2 and SDM terminal 39.
* Left front end sensor terminal 2 and SDM terminal 38.
* Right front side impact sensor terminal A and the SDM terminal 41.
* Left front side impact sensor terminal A and the SDM terminal 40.
* Right rear side impact sensor terminal A and the SDM terminal 47.
Circuit/System Testing
Important: Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician
Safety Information).
When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of
the affected component/connector:
* Front end sensor
* SDM module
* Front end sensor wiring harness connector
* SDM wiring harness connector
1. Ignition OFF, disconnect the harness connector at the appropriate sensor.
2. Disconnect the harness connector at the SDM.
3. Ignition ON, test for less than 1 volt between the following signal circuit and ground.
* Right front end sensor terminal 1
* Left front end sensor terminal 1
* Right front side impact sensor terminal B
* Left front side impact sensor terminal B
* Right rear side impact sensor terminal B
* Left rear side impact sensor terminal B
瀚慖f greater than the specified range, test the circuit for a short to voltage.
4. Ignition ON, test for less than 1 volt between the low reference circuit and ground.
* Right front end sensor terminal 2
* Left front end sensor terminal 2
* Right front side impact sensor terminal A
* Left front side impact sensor terminal A
* Right rear side impact sensor terminal A
* Left rear side impact sensor terminal A
瀚慖f greater than the specified range, test the circuit for a short to voltage.
5. Test for infinite resistance between the signal circuit and ground.
* Right front end sensor terminal 1
* Left front end sensor terminal 1
* Right front side impact sensor terminal B
* Left front side impact sensor terminal B
* Right rear side impact sensor terminal B
* Left rear side impact sensor terminal B
瀚慖f less than the specified value, test the circuit for a short to ground.
6. Test for less than 1 ohm between the following signal circuit terminals.
* Right front end sensor terminal 1 and SDM terminal 37.
* Left front end sensor terminal 1 and SDM terminal 36.
* Right front side impact sensor terminal B and the SDM terminal 43.
* Left front side impact sensor terminal B and the SDM terminal 42.
* Right rear side impact sensor terminal B and the SDM terminal 45.
* Left rear side impact sensor terminal B and the SDM terminal 44.
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
7. Test for less then 1 ohm between the following front end sensor low reference circuit terminals.
* Right front end sensor terminal 2 and SDM terminal 39.
* Left front end sensor terminal 2 and SDM terminal 38.
* Right front side impact sensor terminal A and the SDM terminal 41.
* Left front side impact sensor terminal A and the SDM terminal 40.
* Right rear side impact sensor terminal A and the SDM terminal 47.
Saturday, August 22, 2020
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Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Friday, August 21, 2020
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 147
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Thursday, August 20, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 134
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 134
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 121
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 121
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Circuit/System Testing
DTC B0014-B0018 or B0021-B0045
1. Ignition OFF, disconnect the scan tool and disconnect the harness connector at the appropriate air bag or seat belt retractor pretensioner.
2. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag or seat belt retractor pretensioner.
3. Wait for 120 seconds and then test for greater than 25 ohm between the control circuit terminals listed below.
* Left roof rail air bag terminal 1 and 2
* Right roof rail air bag terminal 1 and 2
* Driver seat side air bag terminal 1 and 2
* Passenger seat side air bag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
* Roof rail air bag control circuit terminal 1
* Roof rail air bag control circuit terminal 2
* Seat side air bag control circuit terminal 1
* Seat side air bag control circuit terminal 2
* Retractor pretensioner control circuit terminal 1
* Retractor pretensioner control circuit terminal 2
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
Monday, August 10, 2020
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2995
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2995
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2158
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2158
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Saturday, August 8, 2020
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2938
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2938
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2130
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2130
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
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