C0561

DTC C0561

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0561 00
- System Disabled Information Stored

Circuit/System Description

The rear differential clutch control module receives messages from other modules over serial data which are needed to perform all wheel drive (AWD) functions.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The rear differential clutch control module receives an invalid message from the electronic brake control module (EBCM) over the serial data circuit which causes the rear differential clutch control module to deactivate.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* All Wheel Drive Off or code 170 (AWD Disabled) will be displayed in the Driver Information Center.

* Service All Wheel Drive or code 73 (Service AWD) will be displayed in the Driver Information Center.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present.

* The DTC is not detected in 40 consecutive drive cycles.

Diagnostic Aids

DTC C0561 is an indicator that the rear differential clutch control module receives an invalid message from the EBCM and does not necessarily indicate a fault is present with the rear differential clutch control module. This DTC should not be used as a fault indicator but rather as a symptom to assist in the diagnosis of these other systems. The EBCM should be checked for possible faults.

The scan tool System Disabled Information Stored parameters may be used during diagnosis to determine which specific system component is causing the concern.

Reference Information

Schematic Reference

Rear Axle Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Sunshade - Left Front

Description and Operation

Rear Drive Axle Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Circuit/System Verification

1. Verify that no DTCs are set in the K17 electronic brake control module.

• If DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

• If no DTCs are set

2. All OK.