C0561

DTC C0561

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 C0561 71
- System Disabled Information Stored Invalid Serial Data Received

DTC C0561 72
- System Disabled Information Stored Alive Counter Incorrect

Circuit/System Description

The electronic brake control module (EBCM) disables the traction control system (TCS) and/or the vehicle stability enhancement system (VSES) when other electronic control modules fail to provide valid data necessary for the EBCM functionality. These other electronic control modules may or may not set DTCs for their invalid data.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The EBCM receives an invalid serial data message from another module. A faulty EBCM will not cause this fault.

Action Taken When the DTC Sets

* The EBCM may disable the TCS and/or the VSES.
* A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

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

Diagnostic Aids

* This DTC indicates EBCM has received an invalid signal from another ECU. Invalid signals may be received from the ECM, TCM, BCM, or EPS if equipped.
* The Tech2 Enhanced Diagnostic Information will indicate which signal/module should be diagnosed.

Reference Information
Schematic Reference

Antilock Brake System Schematics (HP7) ([1][2]Antilock Brakes / Traction Control Systems)Antilock Brake System Schematics (without HP7) ([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