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 antilock brake system (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 9.5 volts.

### Conditions for Setting the DTC

The powertrain control module (PCM) or body control module (BCM) diagnose a condition preventing 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 engine traction control system (ETS) until the DTC becomes a history DTC.

• | The traction Off Indicator turns ON.

• | The 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.

### Reference Information

#### Schematic Reference

Antilock Brake System Schematics

#### Connector End View Reference

Antilock Brake System Connector End Views

#### Description and Operation

ABS Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Scan Tool Data List for EBCM

### 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/ETS system.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Electronic Brake Control Module Replacement

• | Control Module References for EBCM replacement, setup, and programming