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 C0292 : VSES Combination Sensor Circuits

### Circuit/System Description

The electronic brake control module (EBCM) supplies a reference voltage of 12 volts to the yaw rate sensor lateral accelerometer and the steering wheel position sensor. The sensor supply voltage is monitored via an internal feedback circuit to the EBCM microprocessor.

### Conditions for Running the DTC

• | The ignition is ON.

• | Ignition voltage is greater than 9.5 volts.

### Conditions for Setting the DTC

The yaw/lateral sensor is setting an internal electronic failure.

### Action Taken When the DTC Sets

• | Vehicle stability enhancement system (VSES) is disabled.

• | The VSES indicator turns ON.

• | The driver information center (DIC) displays the Service ESC message.

### Conditions for Clearing the DTC

• | The condition for setting the DTC is no longer present and the DTC is cleared with a scan tool.

• | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

### Diagnostic Aids

If the yaw and lateral accelerometer sensor is disconnected, DTCs will set and the EBCM will not provide 12 volt reference.

### Reference Information

#### Schematic Reference

Antilock Brake System Schematics

#### Connector End View Reference

Component Connector End Views

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the Yaw Rate/Lateral Accelerometer .
2. Test for less than 6 ohms between the low reference circuit terminal 5 and ground.

⇒ | If greater than the specified range, test for an open/high resistance in the low reference circuit. If the circuit tests normal, replace the EBCM.

3. Ignition ON, test for 11.8-12.2 volts between the 12-volt reference circuit terminal 3 and ground.

⇒ | If less than the specified range, test the 12-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.

⇒ | If greater than the specified range, test the 12-volt reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.

4. If all circuits test normal, replace the Yaw Rate/Lateral sensor.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Steering Angle Sensor Centering

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