For 1990-2009 cars

### Diagnostic Instructions

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

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

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptor

DTC C0561 71: System Disabled Information Stored

### Circuit/System Description

The electronic brake control module (EBCM) communicates with the engine control module (ECM) and body control module (BCM) during a traction control or stability control event.

### Conditions for Running the DTC

Ignition voltage is greater than 8 volts.

### Conditions for Setting the DTC

The EBCM detects and invalid serial data message when communicating with the ECM and BCM during a traction control or stability control event.

### Action Taken When the DTC Sets

One or more of the following actions may occur:

• | The EBCM disables the vehicle stability enhancement system (VSES) or traction control systems (TCS)

• | The traction control Indicator turns ON or the stability control Indicator turns ON.

### 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 is an aid to the technician, this DTC indicates that there are no problems in the ABS/TCS/VSES. The ECM and BCM should be checked for a possible fault.

### Reference Information

#### Schematic Reference

Antilock Brake System Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation Reference

ABS Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

• | Connector Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

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

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