2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2628

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2628

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Verify that DTC U1814, U2099, B1428, B1370, B1380, B1440, or B1441 is not set.

If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic

Trouble Code (DTC) List - Vehicle).

Circuit/System Testing

Note: Use the schematic to identify the following:

* Control modules the vehicle is equipped with

* Control module locations on the low and high speed GMLAN serial data circuits

* The control modules B+, ignition, ground, communication enable and serial data circuit terminals

1. Determine the control module that is not communicating. Refer to Control Module U Code List (See: Diagnostic Trouble Code

Descriptions/Control Module U Code List).

2. Ignition OFF, disconnect the harness connector of the control module that is not communicating.

3. Test for less than 10 ohm between each ground circuit terminal and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

4. If equipped, verify that a test lamp illuminates between each B+ circuit terminal 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 fuse is open, test the

control circuits of the control module for a short to ground. If the circuits test normal, replace the control module.

5. If equipped, ignition ON, verify that a test lamp illuminates between each ignition circuit terminal and ground.

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit fuse is open, test

the control circuits of the control module for a short to ground. If the circuits test normal, replace the control module.

Note: Only the high speed GMLAN modules have a serial data communication enable circuit OR an accessory wakeup serial data circuit,

and the BCM is the output for these circuits. Refer to the control module schematics to identify which control modules have these circuits.

6. If equipped, ignition ON, verify that a test lamp illuminates between the communication enable circuit terminal OR the accessory wakeup

circuit terminal and ground.

瀚慖f the test lamp does not illuminate, test the circuit for an open/high resistance. If the circuits test normal, replace the BCM.

7. Ignition OFF for 60 seconds, test for less than 5 ohm between the serial data circuit terminals and the appropriate DLC terminal listed below:

* Class 2 serial data circuit terminal 2

* Low speed GMLAN serial data terminal 1

* High speed GMLAN serial data terminal 6 or 14

瀚慖f greater than the specified range, test the serial data circuit for an open/high resistance between the non communicating control module

and a control module setting the DTC or a serial data splice pack.

8. If all circuits test normal, replace the control module that is not communicating.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2274

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2274

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.

Special Tools

J 38522 Variable Signal Generator

Circuit/System Verification

1. Operate the vehicle at 16-32 km/h (10-20 mph), observe the scan tool Transmission OSS parameter. The reading should be greater than 150

RPM and not drop out.

2. Observe the scan tool OSS Supply Voltage parameter. The reading should display OK.

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

P0741

DTC P0741 or P0742

Diagnostic Instructions

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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2157

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 should not set.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Observe the DTC information with a scan tool.

瀚慖f DTC P0602 is set, attempt to program the K20 ECM before replacing the K20 ECM. Refer to Control Module References (See:

Testing and Inspection/Programming and Relearning) for K20 ECM replacement, setup, and programming.

瀚慖f DTC P0602 resets, replace the K20 ECM.

2. Observe the DTC information with a scan tool. DTC P0601, P0603, P0604, P0605, P0606, P0607, P060D, P062F, or P2610 should not set.

瀚慖f a DTC failed this ignition, replace the K20 ECM.

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 ECM replacement, programming and setup

Hybrid Controls

DTC P0601-P0604, P0606, or P062F

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 P0601

- Control Module Read Only Memory (ROM)

DTC P0602

- Control Module Not Programmed

DTC P0603

- Control Module Long Term Memory Reset

DTC P0604

- Control Module Random Access Memory (RAM)

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2087

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2087

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, verify the scan tool Fuel Tank Level Remaining parameter is between 4 and 98 percent.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the fuel level sensor.

2. Ignition ON, verify that the scan tool Fuel Tank Level Remaining parameter is less than 4 percent.

瀚慖f greater than the specified range, test the signal circuit terminal C for a short to ground. If the circuit tests normal, replace the ECM.

3. If all circuits test normal, test or replace the fuel level sensor.

Component Testing

1. Ignition OFF, remove the fuel level sender.

2. While sweeping the fuel level sensor through its full range of motion, test for a minimum resistance value of less than 41 ohm and a

maximum value greater than 119 ohm between the signal terminal C and the low reference terminal B.

瀚慖f not within the specified range, replace the fuel level sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Fuel Level Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and Repair) for

the 6.0L (LFA) engine

* Fuel Level Sensor Replacement (2500 - 98.4L (26 gal) Tank - Front) (See: Powertrain Management/Computers and Control Systems/Fuel

Level Sensor/Service and Repair/Fuel Level Sensor Replacement (2500 - 98.4L (26 Gal) Tank - Front))Fuel Level Sensor Replacement

(2500 - 43.5L (11.5 gal) Tank - Rear) (See: Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and

Repair/Fuel Level Sensor Replacement (2500 - 43.5L (11.5 Gal) Tank - Rear))Fuel Level Sensor Replacement (1500 Series) (See:

Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and Repair/Fuel Level Sensor Replacement (1500

Series))Fuel Level Sensor Replacement (1500 Series w/E85) (See: Powertrain Management/Computers and Control Systems/Fuel Level

Sensor/Service and Repair/Fuel Level Sensor Replacement (1500 Series w/E85)) for the 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L engine

* Control Module References (See: Testing and Inspection/Programming and Relearning) for the ECM replacement, programming and setup

P0463

DTC P0463

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 P0463

- Fuel Level Sensor 1 High Voltage

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 312

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 312

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, command the appropriate actuator in both directions with a scan tool. The scan tool door position parameter reading should be

between 3 and 253 counts.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate actuator.

2. Test for less than 10 ohms between the low reference circuit terminal 7 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance.

3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 10 and ground.

瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance.

瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage.

4. Verify the appropriate scan tool parameter is greater than 250 counts.

瀚慖f greater than the specified range, test the signal circuit terminal 9 for a short to ground.

5. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal. Verify the appropriate scan

tool parameter is less than 4 counts.

瀚慖f less than the specified range, test the signal circuit for a short to voltage or an open/high resistance.

6. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

7. Install a DMM between the actuator control circuit terminal 6 and ground. While monitoring the DMM, use the scan tool to command the

appropriate actuator from one direction to the other. The voltage on the control circuit should move from 0 volts in one direction to 5 volts in

the other direction and 2.5 volts in the at rest state.

瀚慖f the voltage does not change, test the control circuit for an open, short to voltage or short to ground. If circuit tests normal replace the

HVAC control module.

8. If all circuits test normal, replace the actuator.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Air Inlet Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -

Automatic/Air Inlet Valve Actuator Replacement)

* Mode Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -

Automatic/Mode Valve Actuator Replacement)

* Temperature Valve Actuator Replacement - Left Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and

Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Left Side)

* Temperature Valve Actuator Replacement - Right Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service

and Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Right Side)

* Auxiliary Temperature Valve Actuator Replacement (Behr) (See: Heating and Air Conditioning/Air Door/Air Door Actuator /

Motor/Service and Repair/HVAC - Automatic/Auxiliary Temperature Valve Actuator Replacement (Behr))Auxiliary Temperature Valve

Actuator Replacement (Delphi) (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -

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Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. With a master vehicle key, turn the ignition ON.

2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.

3. Turn the ignition OFF and wait 5 seconds.

4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.

5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.

6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.

B320A

DTC B320A

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 B320A 39

- Front Door Window Motor Internal Electronic Failure

DTC B320A 42

- Front Door Window Motor Calibration Data Set Not Programmed

DTC B320A 4B

- Front Door Window Motor Calibration Not Learned

Diagnostic Fault Information

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Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Verify that DTC U1814, U2099, B1428, B1370, B1380, B1440, or B1441 is not set.

If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic

Trouble Code (DTC) List - Vehicle).

Circuit/System Testing

Note: Use the schematic to identify the following:

* Control modules the vehicle is equipped with

* Control module locations on the low and high speed GMLAN serial data circuits

* The control modules B+, ignition, ground, communication enable and serial data circuit terminals

1. Determine the control module that is not communicating. Refer to Control Module U Code List (See: Diagnostic Trouble Code

Descriptions/Control Module U Code List).

2. Ignition OFF, disconnect the harness connector of the control module that is not communicating.

3. Test for less than 10 ohm between each ground circuit terminal and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

4. If equipped, verify that a test lamp illuminates between each B+ circuit terminal 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 fuse is open, test the

control circuits of the control module for a short to ground. If the circuits test normal, replace the control module.

5. If equipped, ignition ON, verify that a test lamp illuminates between each ignition circuit terminal and ground.

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit fuse is open, test

the control circuits of the control module for a short to ground. If the circuits test normal, replace the control module.

Note: Only the high speed GMLAN modules have a serial data communication enable circuit OR an accessory wakeup serial data circuit,

and the BCM is the output for these circuits. Refer to the control module schematics to identify which control modules have these circuits.

6. If equipped, ignition ON, verify that a test lamp illuminates between the communication enable circuit terminal OR the accessory wakeup

circuit terminal and ground.

瀚慖f the test lamp does not illuminate, test the circuit for an open/high resistance. If the circuits test normal, replace the BCM.

7. Ignition OFF for 60 seconds, test for less than 5 ohm between the serial data circuit terminals and the appropriate DLC terminal listed below:

* Class 2 serial data circuit terminal 2

* Low speed GMLAN serial data terminal 1

* High speed GMLAN serial data terminal 6 or 14

瀚慖f greater than the specified range, test the serial data circuit for an open/high resistance between the non communicating control module

and a control module setting the DTC or a serial data splice pack.

8. If all circuits test normal, replace the control module that is not communicating.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 894

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool EBCM Wheel Speed Sensor parameters. The reading should be the same speed on all sensors when driving in a

straight line at a speed greater than 20 km/h (13 MPH).

Circuit/System Testing

1. Ignition ON, verify that DTC C0035, C0040, C0045, or C0050 is not present in the EBCM.

瀚慖f any listed DTC is present, refer to DTC C0035, C0040, C0045, or C0050 (See: C Code Charts/C0035) to diagnose that DTC prior to

this diagnostic.

2. Replace the K17 Electronic Brake Control Module (EBCM) and verify the DTC does not reset.

瀚慖f the DTC resets, replace the module that set the DTC.

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 module replacement, setup and programming

C1224

DTC C1207-C1210, C1221-C1228, or C1232-C1235

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 C1207 00

- Left Front Wheel Speed Sensor Circuit High Input Malfunction

DTC C1208 00

- Right Front Wheel Speed Sensor Circuit High Input Malfunction

DTC C1209 00

- Left Rear Wheel Speed Sensor Circuit High Input Malfunction

DTC C1210 00

- Right Rear Wheel Speed Sensor Circuit High Input Malfunction

DTC C1221 00

- Left Front Wheel Speed Sensor Circuit Malfunction

DTC C1222 00

- Right Front Wheel Speed Sensor Circuit Malfunction

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 832

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Using the scan tool, locate the Invalid parameter in the Data Display.

2. Refer to the appropriate module to diagnose the invalid data signal. Do not replace the electric parking brake control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

C0569

DTC C0569

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 C0569 00

- System Configuration Malfunction

Circuit/System Description

If the tire type and pressure selection information is not entered with the scan tool during the body control module (BCM) setup, the tire pressure

monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the ignition switch is cycled

ON and the IPC bulb check is complete. If equipped, the driver information center (DIC) will also display a service tire monitor type message.

Under these circumstances, DTC C0569 will be set and the tire type and pressure information will need to be entered for the system to function

correctly.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The BCM has not undergone the tire type and pressure selection setup procedure.

Action Taken When the DTC Sets

* The tire pressure monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the

ignition switch is cycled ON and the IPC bulb check is complete.

* If equipped, the driver information center (DIC) displays a service tire monitor type warning message.

Conditions for Clearing the DTC

A current DTC will clear when the BCM has undergone the tire type and pressure selection setup procedure and 1 ignition cycle has occurred.

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 324

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the scan tool BCM Driver Door Ajar Switch parameter while opening and closing the driver door. The parameter

should change between Active and Inactive.

瀚慖f the value does not change, refer to Driver Door Ajar Switch Malfunction.

2. Observe the scan tool keyless entry control module Driver Door Open Switch parameter while opening and closing the driver door. The

parameter should change between Active and Inactive.

瀚慖f the value does not change, refer to Driver Door Open Switch Malfunction.

3. Observe the scan tool BCM Passenger Door Ajar Switch parameter while opening and closing the passenger door. The parameter should

change between Active and Inactive.

瀚慖f the value does not change, refer to Passenger Door Ajar Switch Malfunction.

4. Observe the scan tool keyless entry control module Passenger Door Open Switch parameter while opening and closing the passenger door.

The parameter should change between Active and Inactive.

瀚慖f the value does not change, refer to Passenger Door Open Switch Malfunction.

Circuit/System Testing

Driver Door Ajar Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly - driver.

2. Test for less than 10 ohm between the ground circuit terminal 8 and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool BCM Driver Door Ajar Switch parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the M74D window

motor - driver.

4. Install a 3 A fused jumper wire between the signal circuit terminal 6 and ground. Verify the scan tool BCM Driver Door Ajar Switch

parameter is Active.

瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

M74D window motor - driver.

5. If all circuits test normal, test or replace the A23D door latch assembly - driver.

Driver Door Open Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly - driver.

2. Ignition ON, verify the scan tool keyless entry control module Driver Door Open Switch parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 7 for a short to ground. If the circuit tests normal, replace the K84 keyless entry

control module.

3. Install a 3 A fused jumper wire between the signal circuit terminal 7 and ground. Verify the scan tool keyless entry control module Driver

Door Open Switch parameter is Active.

瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

K84 keyless entry control module.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 754

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 754

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)

Circuit/System Verification

Ignition ON, observe the scan tool EBCM Wheel Speed Sensor parameters. The parameters displayed should be within 1.6 km/h (1 MPH) on all

sensors when driving in a straight line at a speed greater than 20 km/h (13 MPH).

Circuit/System Testing

1. Ignition ON, verify that DTC C0035, C0040, C0045, or C0050 is not present in the K17 EBCM.

瀚慖f any listed DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Replace the K19 Suspension Control Module and verify the DTC does not reset.

瀚慖f the DTC resets, replace the K17 electronic brake control module (EBCM).

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 module replacement, setup, and programming.

C019B

DTC C0186, C0196, C019B, or C0287

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 C0186 5A

- Lateral Acceleration Sensor Circuit Not Plausible

DTC C0186 71

- Lateral Acceleration Sensor Circuit Invalid Data

DTC C0196 00

- Yaw Rate Circuit Malfunction

DTC C0196 5A

- Yaw Rate Signal Not Plausible

DTC C019B 5A

- Yaw Rate Signal Not Plausible

DTC C0287 4B

- Longitudinal Acceleration Sensor Circuit Calibration Not Learned

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 365

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 365

Electrical Information Reference

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, verify the scan tool Liftgate Mode Switch parameter changes from 125 counts to 350 counts to 245 counts while rotating the

S45B liftgate control switch - interior.

瀚慖f the value does not change with each position selected, refer to OFF/ 3/4 position/MAX Switch Circuit Test

2. Place the S45B liftgate control switch - interior to the OFF position.

3. Observe the scan tool Liftgate Front Control Switch parameter while pressing and releasing the liftgate button on the S45B liftgate control

switch-interior. The parameter should change between Inactive and Active.

瀚慖f the value does not change, refer to Open/Close Switch Circuit Test

Circuit/System Testing

OFF/ 3/4 position/MAX Switch Circuit Test

1. Ignition OFF, disconnect the harness connector at the S45B liftgate control switch-interior.

2. Test for less than 10 ohm between the ground circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the ground circuit for a open/high resistance.

3. Ignition ON, verify the scan tool Liftgate Mode Switch parameter is greater than 300 counts.

瀚慖f less than the specified range, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K39 liftgate

module.

4. Install a 3A fused jumper wire between the signal circuit terminal 3 and ground, verify the scan tool Liftgate Mode Switch parameter is less

than 5 counts.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal,

replace the K39 liftgate module.

5. If all circuits test normal, test or replace the S45B liftgate control switch-interior.

Open/Close Switch Circuit Test

1. Ignition OFF, disconnect the harness connector at the S45B liftgate control switch-interior.

2. Test for less than 10 ohm between the ground circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the ground circuit for a open/high resistance.

3. Ignition ON, verify the scan tool Liftgate Front Control Switch parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the K39 liftgate control

module.

4. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground. Verify the scan tool Liftgate Front Control Switch

parameter is Active.

瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

K39 liftgate control module.

5. If all circuits test normal, test or replace the S45B liftgate control switch-interior.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 594

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 594

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the function of the E4G headlamp-left low beam and the E4F headlamp-right low beam while commanding the low beam

lamps ON and OFF with a scan tool. The E4G headlamp-left low beam and the E4F headlamp-right low beam should turn ON and OFF while

changing between the commanded states.

Circuit/System Testing

1. Ignition OFF, disconnect the harness X1 harness connector at the K9 BCM.

2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal listed below and ground:

* B+ circuit terminal 3

* B+ circuit terminal 4

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

3. Ignition OFF, connect the harness X1 harness connector at the K9 BCM.

4. Disconnect the inline harness connector at the appropriate E4 headlamp-low beam listed below:

* E4G headlamp-left low beam X115 inline harness connector

* E4F headlamp-right low beam X116 inline harness connector

5. Connect a test lamp between the control circuit terminal G and ground.

6. Ignition ON, command the low beam lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF while changing between

the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K9 BCM

7. If all circuits test normal, replace the headlamp bulb or the headlamp.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Headlamp Replacement (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

B2740

DTC B2740

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.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 68

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 68

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the appropriate scan tool Deployment Loop Resistance parameter. The reading should be between 1.8-5.12 ohm.

Note: When removing connectors, inspect for damage or corrosion. Damage or corrosion in 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

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the F107 driver steering wheel air bag.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for less than 1.0 ohm between the following control circuit terminals and

ground:

* circuit terminal 2 X1

* circuit terminal 4 X1

瀚慖f greater than the specified range, test the control circuit for an open/high resistance. If the circuit tests normal, replace the K36 SDM.

3. Ignition ON, verify the scan tool Deployment Loop Resistance parameter is greater than 5.12 ohm.

瀚慖f less than the specified range, test control circuit terminals for a short to ground. If the circuit tests normal, replace the K36 SDM.

4. Install a 3 A fused jumper wire between the following control circuit terminals. Verify the scan tool Deployment Loop Resistance parameter

is less than 1.8 ohm.

* circuit terminal 1 X1 and terminal 2 X1

* circuit terminal 4 X1 and terminal 3 X1

瀚慖f greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal,

replace the K36 SDM.

5. If all circuits test normal, test or replace the F107 driver steering wheel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Steering Wheel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Steering Wheel Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0014

DTC B0014-B0045

Diagnostic Instructions