2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1039

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1039

Failure to follow the procedures exactly as written may result in serious injury or death.

1. Ignition OFF, disconnect the 42V harness connector X2 at the APM.

2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 3 ohms between the ground

circuit terminal 1 X2 of the APM and ground.

瀚慖f greater than the specified range, test the APM ground circuits for an open/high resistance. If the circuits test normal, replace the APM.

3. Ignition OFF, connect a DMM between the 42V+ circuit terminal 2 X2 of the APM and ground.

4. Ignition ON, command the APM Intermediate Voltage Control ON with a scan tool. Test for 37.5-60 volts between the 42V+ circuit terminal

2 X2 terminal and ground. Command the APM Intermediate Voltage Control OFF after completing this test.

瀚慖f not within the specified range, replace the APM.

5. Ignition OFF, verify that the 42V harness connector X2 is connected under the PSCM.

瀚慖f the connector is not connected, connect the connector.

6. If all circuits test normal, replace the PSCM.

Low Voltage When Turning

1. Inspect the steering system for mechanical binding. The steering should have a heavy feel, if the power steering is disabled, but should not

bind.

瀚慖f there is any mechanical binding in the steering system, refer to Steering Effort Hard in One or Both Directions (Standard) (See:

Steering and Suspension/Steering/Testing and Inspection/Symptom Related Diagnostic Procedures/Steering Effort Hard in One or Both

Directions (Standard))Steering Effort Hard in One or Both Directions (HP2) ().

2. If all circuits test normal, replace the power steering motor.

Repair Instructions

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

* Power Steering Assist Motor Replacement (See: Steering and Suspension/Steering/Power Steering/Power Steering Motor/Service and

Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for APM or PSCM replacement, setup and

programming

MP 3010-NP0 - Transfer Case

DTC C0896

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 C0896 03

- Device Voltage Range Below Threshold

DTC C0896 07

- Device Voltage Range Above Threshold

Circuit/System Description

The transfer case shift control module (TCCM) monitors the battery voltage feed to the TCCM. This DTC detects if the battery voltage is out of

range. This could indicate a vehicle wide issue in which all electrical components would be affected, or it could be TCCM specific due to poor

power or ground connections.

Conditions for Running the DTC