2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 891

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 891

5. Using the PU probes J 35616-4A, connect a test lamp between the motor control B circuit, TCEM X1 pin D and the ground terminal of

EL-49742 - harness, black terminal.

6. Using the Transfer Case Motor Control function of the Special Function feature of the scan tool, command the motor forward and reverse.

When commanded forward, the test light should turn OFF. When commanded reverse, the test light should illuminate for 10 seconds and turn

OFF.

瀚慖f the test light stays ON when commanded OFF, test the motor control B circuit for a short to voltage. If all circuits and connections test

normal, reprogram the TCCM. If the DTC continues to set replace the TCCM.

瀚慖f the test light does not illuminate when commanded ON, test the motor control B circuit for an open or short to ground. If all circuits

and connections test normal, reprogram the TCCM. If the DTC continues to set replace the TCCM.

7. Using the PU probes J 35616-4A, connect a test lamp between the motor control A circuit, TCEM X1 pin A and the B+ terminal of

EL-49742 - harness, red terminal.

8. Using the Transfer Case Motor Control function of the Special Function feature of the scan tool, command the motor forward and reverse.

When commanded forward, the test light should illuminate dimly for 10 seconds and turn OFF. When commanded reverse, the test light

should illuminate brightly for 10 seconds and turn OFF.

瀚慖f the test light stays ON after the 10 seconds, test the motor control A circuit for a short to voltage. If all circuits and connections test

normal, reprogram the TCCM. If the DTC continues to set replace the TCCM.

瀚慖f the test light does not illuminate at all, test the motor control A circuit for an open or short to ground. If all circuits and connections test

normal, reprogram the TCCM. If the DTC continues to set replace the TCCM.

9. Using the PU probes J 35616-4A, connect a test lamp between the motor control B circuit, TCEM X1 pin D and the B+ terminal of

EL-49742 - harness, red terminal.

10. Using the Transfer Case Motor Control function of the Special Function feature of the scan tool, command the motor forward and reverse.

When commanded forward, the test light should illuminate brightly for 10 seconds and turn OFF. When commanded reverse, the test light

should illuminate dimly for 10 seconds and turn OFF.

瀚慖f the test light stays ON after the 10 seconds, test the motor control B circuit for a short to voltage. If all circuits and connections test

normal, reprogram the TCCM. If the DTC continues to set replace the TCCM.

瀚慖f the test light does not illuminate at all, test the motor control B circuit for an open or short to ground. If all circuits and connections test

normal, reprogram the TCCM. If the DTC continues to set replace the TCCM.

11. Test the TCEM.

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 TCSCM replacement, setup, and programming

* Transfer Case High/Low Clutch Reset (See: Transmission and Drivetrain/Transfer Case/Testing and Inspection/Symptom Related

Diagnostic Procedures/MP 3023/3024-NQH - Transfer Case/Transfer Case High/Low Clutch Reset)

* Transfer Case Two/Four Wheel Drive Actuator Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and

Solenoids - Transmission and Drivetrain/Actuators and Solenoids - Transfer Case/Transfer Case Actuator/Service and Repair/MP 3010-NP0

- Transfer Case/Transfer Case Two/Four Wheel Drive Actuator Replacement)

* Transfer Case Disassemble (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP 3023/3024-NQH - Transfer

Case/Transfer Case Disassemble)

* Transfer Case Assemble (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP 3023/3024-NQH - Transfer

Case/Transfer Case Assemble)

* Oil Pump Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP 3010-NP0 - Transfer

Case/Oil Pump Cleaning and Inspection)

* Rear Output Shaft Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP

3023/3024-NQH - Transfer Case/Rear Output Shaft Cleaning and Inspection)

* Front Output Shaft and Input Shaft Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and

Repair/Overhaul/MP 3023/3024-NQH - Transfer Case/Front Output Shaft and Input Shaft Cleaning and Inspection)

* Drive Chain, Drive Sprocket, and Driven Sprocket Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and

Repair/Overhaul/MP 3023/3024-NQH - Transfer Case/Drive Chain, Drive Sprocket, and Driven Sprocket Cleaning and Inspection )

* High/Low Planetary Carrier Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP

3023/3024-NQH - Transfer Case/High/Low Planetary Carrier Cleaning and Inspection)

* High/Low Shift Components Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP

3023/3024-NQH - Transfer Case/High/Low Shift Components Cleaning and Inspection)

* Two/Four Wheel Drive Shift Components Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and

Repair/Overhaul/MP 3023/3024-NQH - Transfer Case/Two/Four Wheel Drive Shift Components Cleaning and Inspection)

* Transfer Case Front Half Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP

3023/3024-NQH - Transfer Case/Transfer Case Front Half Cleaning and Inspection)

* Transfer Case Rear Half Cleaning and Inspection (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Overhaul/MP

3023/3024-NQH - Transfer Case/Transfer Case Rear Half Cleaning and Inspection)

MP 3010-NP0 - Transfer Case