All-Wheel Drive (AWD) Disabled Indicator Always on

All-Wheel Drive (AWD) Disabled Indicator Always On

Diagnostic Instructions
^ Perform the [Diagnostic System Check - Vehicle Diagnostic Information] prior to using this diagnostic procedure.
^ Review [Strategy Based Diagnosis] for an overview of the diagnostic approach. Strategy Based Diagnosis
^ [Diagnostic Procedure Instructions - Vehicle Diagnostic Information] provides an overview of each diagnostic category. Diagnostic Procedure Instructions - Vehicle Diagnostic Information

Circuit/System Description
The instrument panel cluster (IPC) illuminates the AWD Disabled indicator by supplying ground to the lamp. The Rear Differential Clutch Control Module (CCM) sends a serial data messages to the IPC, in order to command the indicator ON or OFF.

Reference Information
Schematic Reference
[All-Wheel Drive Schematics]
Connector End View Reference
[Transfer Case Control Connector End Views]
Description and Operation
[All-Wheel Drive Description and Operation]

Description and Operation Reference
[All-Wheel Drive Description and Operation]
Electrical Information Reference
^ [Circuit Testing]
^ [Connector Repairs]
^ [Testing for Intermittent Conditions and Poor Connections]
^ [Wiring Repairs]

Scan Tool Reference
[Scan Tool Data List - Rear Drive Axle]

Circuit/System Testing

Note: Diagnose all vehicle DTCs before using this diagnostic. With the scan tool, select instrument panel special functions Lamp Test. Command the instrument panel warning lamps OFF.
> If the AWD Disabled warning lamp does not turn OFF, replace the IPC.
> If the AWD Disabled lamp turns OFF and there are no DTCs stored in any vehicle systems, replace the CCM.

Repair Instructions
Perform the [Diagnostic Repair Verification - Vehicle Diagnostic Information] after completing the diagnostic procedure.
[Control Module References] for CCM replacement, setup, and programming Programming and Relearning