C0561

DTC C0561

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* ReviewStrategy 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 Descriptors
DTC C0561 71
- System Disabled Information Stored Invalid Serial Data Received



Circuit/System Description

The electronic brake control module (EBCM) receives serial data messages from the instrument panel cluster (IPC), engine control module (ECM), and the transmission control module (TCM) which are needed to perform antilock brake system (ABS), vehicle stability enhancement system (VSES), or traction control system (TCS) functions.

Conditions for Running the DTC

Ignition voltage is greater than 9.6 volts.

Conditions for Setting the DTC

The EBCM detects an invalid serial data message from another module which causes the EBCM to disable ABS, VSES and TCS.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
* The dynamic rear proportioning (DRP) may be disabled and the Brake Warning indicator may illuminate.
* The Stability Caution indicator illuminates.
* The driver information center (DIC) displays the SERVICE STABILITRAK SYSTEM message.
* The DIC displays the TRACTION FAILED message.


Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.


Diagnostic Aids

This DTC indicates that there are no problems in the ABS/TCS. The ECM, TCM, IPC, and body control module (BCM) should be checked for a possible fault.

Reference Information
Schematic Reference

Antilock Brake System Schematics ([1][2]Antilock Brakes / Traction Control Systems)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (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 Verification

Verify that no DTCs are set in the ECM, TCM, IPC, and BCM.

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