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) disables the ABS when other electronic control modules set DTCs for components that effect the operation of the traction control system.

### Conditions for Running the DTC

• | The ignition switch is in the ON position.

• | Ignition voltage is greater than 8 volts.

### Conditions for Setting the DTC

The powertrain control module (PCM) or body control module (BCM) diagnosis a condition prevention the engine control portion of the traction control function and sends a serial data message to the EBCM indicating that torque reduction is not allowed. The PCM or BCM will typically set a DTC and the EBCM will set this DTC.

### Action Taken When the DTC Sets

One or more of the following actions may occur:

• | The EBCM disables the traction control system (TCS) until the DTC becomes a history DTC.

• | The traction Off Indicator turns ON.

• | The Antilock Brake System (ABS) remains functional.

### 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.

### Circuit/System Verification

This DTC is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS/TCS system.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.