Transfer Case - Getrag 760

DTC C0394

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptor
DTC C0394 06
- Rear Differential Clutch Temperature Sensor Circuit

Diagnostic Fault Information





Circuit/System Description

The rear differential clutch control module (CCM) provides a power and ground circuits to the temperature sensor. When the temperature of the module is determined to be beyond its limits, the CCM will temporarily disable the rear drive system.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

An open or short to ground is detected on the temperature sensor circuits.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* All Wheel Drive Off (AWD Disabled).
* Service All Wheel Drive (Service AWD).

Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* The DTC is not detected in 40 consecutive drive cycles.

Reference Information
Schematic Reference

All-Wheel Drive Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

All-Wheel Drive Description and Operation (All-Wheel Drive Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the X2 harness connector at the clutch control module.
2. Ignition ON, verify a test lamp does not illuminate between the following circuits and ground:

* low reference terminal 2
* signal terminal 4

• If the test lamp illuminates, test the appropriate circuit for a short to voltage.

3. Ignition OFF, test for infinite resistance between the following circuit terminals and ground:

* low reference terminal 2
* signal terminal 4

• If less than the specified value, test the appropriate circuit for a short to ground.

4. Test for 310-113 K ohms of resistance between the low reference circuit terminal 2 and the signal circuit terminal 4.

• If greater than the specified range, test the appropriate circuit for an open/high resistance. If the circuits test normal, replace the rear wheel drive module clutch housing.

5. If all circuits test normal, replace the CCM.

Repair Instructions

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

* Rear Wheel Drive Module Clutch Housing Replacement (Rear Wheel Drive Module Clutch Housing Replacement)
* Control Module References (Programming and Relearning) for CCM replacement, setup, and programming