2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 921

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 921

2. Key ON, engine OFF. Connect the EL-49742 - harness.

3. Test for 4.5-5.5 V between the TCCM 5-volt reference pin, TCCM X1 pin 4, and the ground terminal of the EL-49742 - harness, black

terminal.

瀚慖f the outside the specified range, replace TCCM.

4. Key OFF.

5. Connect the TCCM X1 connector. Disconnect the TCCM X2 connector.

6. Key ON, engine OFF.

7. Test for B+ (+0.0/-1.0 V) between the TCCM low reference pin, TCCM X2 pin 9, and the B+ terminal of the EL-49742 - harness, red

terminal.

瀚慖f the outside the specified range, replace TCCM.

8. Test for B+ (+0.0/-1.0 V) between the TCCM rotational position sensor pin, TCCM X2 pin 11, and the B+ terminal of the EL-49742 -

harness, red terminal.

瀚慖f the outside the specified range, replace TCCM.

9. Go to Circuit/System Testing.

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 3010-NP0/Transfer Case High/Low Clutch Reset)

* Transfer Case Two/Four Wheel Drive Actuator Position Sensor 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 Position Sensor Replacement)

MP 3023/3024-NQH - Transfer Case

DTC C0392

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 C0392 01

- Rotational Position Sensor Circuit Short to Battery

DTC C0392 02

- Rotational Position Sensor Circuit Short to Ground

DTC C0392 08

- Rotational Position Sensor Circuit Signal Invalid

Diagnostic Fault Information

Circuit/System Description

The transfer case shift control module (TCCM) receives input from the transfer case two/four wheel drive actuator position sensor, also known as

the rotational position sensor (RPS). The RPS receives a 5-volt reference signal from the TCCM. In return the RPS sends the TCCM a variable

pulse width modulated signal indicating the position of the transfer case actuator. The RPS works in conjunction with the incremental position