Antilock Brake System

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 Descriptors
DTC C0561 71
- System Disabled Information Stored, Invalid Serial Data Received: Electronic Brake Control Module, Suspension Control Module, Power Steering Control Module, Steering Wheel Position Sensor, and Inertial Sensor




Circuit/System Description

The vehicle stability control module (VSCM) disables stability control and or traction control when other electronic control module and components set DTCs for components that affect the operation stability control system.


Conditions for Running the DTC

* The ignition is ON.
* Ignition voltage is greater than 9 volts.



Conditions for Setting the DTC

The engine control module (ECM), power steering control module (PSCM), electronic brake control module (EBCM), magneto-rheological, real time damping (MR-RTD) module, inertial measurement unit (yaw rate, lateral, and longitudinal sensor), or steering wheel position sensor (SWPS) diagnoses a condition which prevents the stability control system from performing correctly. The source module will typically set a DTC and the VSCM will set DTC C0561.


Action Taken When the DTC Sets

* The VSCM disables suspension and steering stability control or all VSES for the ignition cycle when the DTC is set.
* Either stability secure mode or service stability message is displayed.
* The antilock brake system (ABS) remains functional.



Conditions for Clearing the DTC

* The condition for setting 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

The DTC provides an indication that the stability control function is disabled because of a fault in another component. All power steering control module (PSCM), electronic brake control module (EBCM) and magneto-rheological, real time damping (MR-RTD) codes should be addressed first.


Reference Information
Schematic Reference

Antilock Brake System Schematics (Except JL7) (Antilock Brake System Schematics (Except RPO JL7))Antilock Brake System Schematics (JL7) (Antilock Brake System Schematics (With RPO JL7))
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (Without JL7) (ABS Description and Operation (Without RPO JL7))ABS Description and Operation (With JL7) (ABS Description and Operation (With RPO JL7))
Electrical Information Reference

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

Scan Tool Reference

Control Module References (Programming and Relearning)


Circuit/System Verification

Verify that no DTCs are set in the PSCM, VSCM, MR-RTD, and EBCM. Also review ABS wheel speed sensor, steering angle sensor parameters for correct readings.

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



Repair Instructions

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

* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (Yaw Sensor with Vehicle Lateral Accelerometer Replacement)
* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement (Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement)
* Control Module References (Programming and Relearning) for EBCM replacement, setup, and programming