2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2867
6. If all circuits test normal, replace the Yaw and Lateral Accelerometer 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)
* 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)
* Control Module References (See: Testing and Inspection/Programming and Relearning)for control module replacement, setup, and
programming
U1829
DTC U1829
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 U1829 00
- Lost Communication with Gateway A on Bus B
Diagnostic Fault Information
Circuit/System Description
Control modules connected to the high and low speed GMLAN serial data circuits monitor for serial data communications during normal vehicle
operation. Operating information and commands are exchanged among the control modules. The control modules have prerecorded information
about what messages are needed to be exchanged on the serial data circuits, for each virtual network. 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 serial data gateway module (SDGM) energizes the wake up signal to activate the accessory DC power control module (APM) and another
wake up signal to activate the hybrid powertrain control module (HPCM) which is inside the drive motor generator power inverter module (PIM)
when communication is needed. The HPCM reports all DTCs for the APM.
Conditions for Running the DTC
* The system voltage is between 9-16 V.
* The ignition in RUN.
Conditions for Setting the DTC
The powertrain serial data circuits between the SDGM and the APM or the PIM are open.
Showing posts with label 6. If all circuits test normal. Show all posts
Showing posts with label 6. If all circuits test normal. Show all posts
Wednesday, December 16, 2020
Sunday, November 29, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2464
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2464
6. If all circuits test normal, test or replace the IMS.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Note:
* 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) before replacing any internal transmission
components.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission repairs.
* Manual Shift Shaft Position Switch Replacement (See: Powertrain Management/Computers and Control Systems/Sensors and Switches -
Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/6L45/6L50/6L80/6L90 - Automatic Transmission
)for internal mode switch (IMS) replacement.
* Control Module References (See: Testing and Inspection/Programming and Relearning)for control solenoid valve assembly replacement,
setup, and programming.
P2066
DTC P2066
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 P2066
- Fuel Level Sensor 2 Performance
Diagnostic Fault Information
Circuit/System Description
The primary fuel level sensor and the secondary fuel level sensor change resistance in response to the fuel level. The engine control module (ECM)
monitors the signal circuit of the primary fuel level sensor, the secondary fuel level sensor, and the type of fuel in order to determine the fuel level.
For regular unleaded fuel the ECM monitors a constant signal. When the vehicle has approximately 20% or greater ethanol for E85 fuel
applications, the ECM controls a pulse cycle signal where it monitors the signal and calculates the fuel level percentage only during the on pulse of
approximately 100 ms.
When the fuel tanks are full, the sensor resistances of both fuel level sensors are low and the ECM senses a low signal voltage on both the signal
circuits of the primary fuel level sensor and the secondary fuel level sensor. When the fuel tanks are empty, the resistances of the fuel level sensors
are high and the ECM senses a high signal voltage. The ECM uses the signal circuit of the primary fuel level sensor and the secondary fuel level
sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via the serial data circuit to the
instrument cluster in order to control the fuel gauge.
This diagnostic tests for a stuck fuel level sensor signal. The ECM sets this DTC if the fuel level sensor signal appears to be stuck based on a lack
of signal variation expected during normal operation.
Conditions for Running the DTC
* The engine is running.
* Fuel level is greater than 32 liters (8.5 gallons).
6. If all circuits test normal, test or replace the IMS.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Note:
* 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) before replacing any internal transmission
components.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission repairs.
* Manual Shift Shaft Position Switch Replacement (See: Powertrain Management/Computers and Control Systems/Sensors and Switches -
Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/6L45/6L50/6L80/6L90 - Automatic Transmission
)for internal mode switch (IMS) replacement.
* Control Module References (See: Testing and Inspection/Programming and Relearning)for control solenoid valve assembly replacement,
setup, and programming.
P2066
DTC P2066
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 P2066
- Fuel Level Sensor 2 Performance
Diagnostic Fault Information
Circuit/System Description
The primary fuel level sensor and the secondary fuel level sensor change resistance in response to the fuel level. The engine control module (ECM)
monitors the signal circuit of the primary fuel level sensor, the secondary fuel level sensor, and the type of fuel in order to determine the fuel level.
For regular unleaded fuel the ECM monitors a constant signal. When the vehicle has approximately 20% or greater ethanol for E85 fuel
applications, the ECM controls a pulse cycle signal where it monitors the signal and calculates the fuel level percentage only during the on pulse of
approximately 100 ms.
When the fuel tanks are full, the sensor resistances of both fuel level sensors are low and the ECM senses a low signal voltage on both the signal
circuits of the primary fuel level sensor and the secondary fuel level sensor. When the fuel tanks are empty, the resistances of the fuel level sensors
are high and the ECM senses a high signal voltage. The ECM uses the signal circuit of the primary fuel level sensor and the secondary fuel level
sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via the serial data circuit to the
instrument cluster in order to control the fuel gauge.
This diagnostic tests for a stuck fuel level sensor signal. The ECM sets this DTC if the fuel level sensor signal appears to be stuck based on a lack
of signal variation expected during normal operation.
Conditions for Running the DTC
* The engine is running.
* Fuel level is greater than 32 liters (8.5 gallons).
Wednesday, August 26, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 256
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 256
6. If all circuits test normal, test or replace the liftgate motor assembly.
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
B153F
DTC B153F
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 B153F 02
- Liftgate Object Sensor Signal Circuit Short to Ground
DTC B153F 03
- Liftgate Object Sensor Signal Circuit Voltage Below Treshold
DTC B153F 05
- Liftgate Object Sensor Signal Circuit Short to Battery or Open
DTC B153F 07
- Liftgate Object Sensor Signal Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit/System Description
The liftgate object sensors are pressure sensitive touch tapes located on either side of the upper inside edge of the liftgate panel. The two tape
switches are placed in series between the liftgate object sensor signal circuit and the liftgate object low reference circuit. Each object sensor has a
resistor as well as a switch. The resistors enable the liftgate module to perform diagnostic functions on the circuits. When both touch tape sensors
are not pressed, the 5 volt reference voltage supplied by the liftgate module passes through the resistors and the liftgate module detects
approximately 3.3 volts. Pressing a touch tape will cause the voltage to drop to approximately to 2.5 volts indicating an obstruction is present. If the
liftgate is in the open position, the liftgate module will prohibit liftgate movement. If the obstruction occures during the power close function, the
liftgate module will command the liftgate to reverse direction.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
B153F 02
The liftgate module detects a short to ground in the liftgate tape switch signal circuit.
B153F 03
The liftgate module detects less than 3.3 volts in the liftgate tape switch signal circuit.
6. If all circuits test normal, test or replace the liftgate motor assembly.
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
B153F
DTC B153F
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 B153F 02
- Liftgate Object Sensor Signal Circuit Short to Ground
DTC B153F 03
- Liftgate Object Sensor Signal Circuit Voltage Below Treshold
DTC B153F 05
- Liftgate Object Sensor Signal Circuit Short to Battery or Open
DTC B153F 07
- Liftgate Object Sensor Signal Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit/System Description
The liftgate object sensors are pressure sensitive touch tapes located on either side of the upper inside edge of the liftgate panel. The two tape
switches are placed in series between the liftgate object sensor signal circuit and the liftgate object low reference circuit. Each object sensor has a
resistor as well as a switch. The resistors enable the liftgate module to perform diagnostic functions on the circuits. When both touch tape sensors
are not pressed, the 5 volt reference voltage supplied by the liftgate module passes through the resistors and the liftgate module detects
approximately 3.3 volts. Pressing a touch tape will cause the voltage to drop to approximately to 2.5 volts indicating an obstruction is present. If the
liftgate is in the open position, the liftgate module will prohibit liftgate movement. If the obstruction occures during the power close function, the
liftgate module will command the liftgate to reverse direction.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
B153F 02
The liftgate module detects a short to ground in the liftgate tape switch signal circuit.
B153F 03
The liftgate module detects less than 3.3 volts in the liftgate tape switch signal circuit.
Wednesday, August 5, 2020
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2867
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2867
6. If all circuits test normal, replace the Yaw and Lateral Accelerometer 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)
* 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)
* Control Module References (See: Testing and Inspection/Programming and Relearning)for control module replacement, setup, and
programming
U1829
DTC U1829
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 U1829 00
- Lost Communication with Gateway A on Bus B
Diagnostic Fault Information
Circuit/System Description
Control modules connected to the high and low speed GMLAN serial data circuits monitor for serial data communications during normal vehicle
operation. Operating information and commands are exchanged among the control modules. The control modules have prerecorded information
about what messages are needed to be exchanged on the serial data circuits, for each virtual network. 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 serial data gateway module (SDGM) energizes the wake up signal to activate the accessory DC power control module (APM) and another
wake up signal to activate the hybrid powertrain control module (HPCM) which is inside the drive motor generator power inverter module (PIM)
when communication is needed. The HPCM reports all DTCs for the APM.
Conditions for Running the DTC
* The system voltage is between 9-16 V.
* The ignition in RUN.
Conditions for Setting the DTC
The powertrain serial data circuits between the SDGM and the APM or the PIM are open.
6. If all circuits test normal, replace the Yaw and Lateral Accelerometer 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)
* 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)
* Control Module References (See: Testing and Inspection/Programming and Relearning)for control module replacement, setup, and
programming
U1829
DTC U1829
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 U1829 00
- Lost Communication with Gateway A on Bus B
Diagnostic Fault Information
Circuit/System Description
Control modules connected to the high and low speed GMLAN serial data circuits monitor for serial data communications during normal vehicle
operation. Operating information and commands are exchanged among the control modules. The control modules have prerecorded information
about what messages are needed to be exchanged on the serial data circuits, for each virtual network. 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 serial data gateway module (SDGM) energizes the wake up signal to activate the accessory DC power control module (APM) and another
wake up signal to activate the hybrid powertrain control module (HPCM) which is inside the drive motor generator power inverter module (PIM)
when communication is needed. The HPCM reports all DTCs for the APM.
Conditions for Running the DTC
* The system voltage is between 9-16 V.
* The ignition in RUN.
Conditions for Setting the DTC
The powertrain serial data circuits between the SDGM and the APM or the PIM are open.
Tuesday, February 4, 2020
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 460
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 460
6. If all circuits test normal, test or replace the S30 headlamp switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Headlamp Switch Replacement (See: Lighting and Horns/Headlamp/Headlamp Switch/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, programming and setup
HVAC - Automatic
DTC B0163, B0183, or B1405
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 B0163 02
- Passenger Compartment Temperature Sensor Circuit Short to Ground
DTC B0163 05
- Passenger Compartment Temperature Sensor Circuit High Voltage/Open
DTC B0183 02
- Solar Load Sensor Circuit Short to Ground
DTC B0183 05
- Solar Load Sensor Circuit High Voltage/Open
DTC B1405 02
- Control Module Voltage Reference Output 2 Circuit Short to Ground
DTC B1405 05
- Control Module Voltage Reference Output 2 Circuit High Voltage/Open
Circuit/System Description
The ambient light/sunload sensor includes the sunload sensor and passenger compartment temperature sensor.
This sensor assembly provides information about:
* Sun heat intensity
* Elevation
* Azimuth
* Passenger compartment temperature
The sunload sensor is connected to ground and to a 12 V clocked power supply through the HVAC control module. This clocked power supply is to
power the sensor electronics and to work as a clock generator to the sunload sensor micro controller. The sensor uses a pulse signal for data
identification and transferring the sun intensity measurement. At each positive transition from the clocked supply input, the sunload sensor micro
controller will shift channels enabling new intensity measurement on the signal output to the HVAC control module. The signal voltage varies
between 0-4 V.
The passenger compartment temperature sensor is a negative temperature co-efficient thermistor. A signal and low reference circuit enables the
sensor to operate. As the air temperature increases, the sensor resistance decreases. The sensor signal varies between 0-5 V.
Bright or high intensity light causes the vehicles interior temperature to increase. The HVAC system compensates for the increased temperature by
diverting additional cool air into the vehicle.
Conditions for Running the DTC
* Ignition ON.
* The HVAC control module is ON.
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