2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 919

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 919

Action Taken When the DTC Sets

Current Mode:

4WD Auto or 4WD HI

* Clutch torque increased to maximum torque.

* No further mode/range changes allowed.

* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.

2WD HI

* No further mode/range changes allowed.

* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.

Mode/Range Shift

* Current mode/range change completed.

* No further mode/range changes allowed.

* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.

Conditions for Clearing the DTC

* The TCCM clears the DTC once the conditions for setting the DTC are no longer present.

* A history DTC clears after 40 consecutive warm up cycles without a fault present.

* History DTCs can be cleared using a scan tool.

Diagnostic Aids

* EL-49742 - harness is a good source for B+ and ground.

* The transfer case drain plug is a good source for ground.

* Typical RPS parameter values:

- 2WD HI = 30-40掳

- 4WD Auto = 95-105掳

- 4WD HI = 120-135掳

Reference Information

Schematic Reference

Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3010-NP0 - Transfer Case)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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

Special Tools

* EL-49742 - Battery Voltage B+ and Ground Source Harness

* J 35616 - GM-Approved Terminal Test Kit

Circuit/System Verification

1. Key ON, engine OFF.

2. Connect a scan tool.

3. Using the TCSCS, select each transfer case mode/range while monitoring the Rotational Position Sensor parameter and the Incremental

Position Sensor parameter on the scan tool, The Rotational Position Sensor parameter and the Incremental Position Sensor parameter should

track within 5 degrees of each other.

Circuit/System Testing