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 Descriptors

DTC C0187 00: Lateral Accelerometer Circuit Range

### Circuit/System Description

The lateral accelerometer and the yaw rate sensors are combined into one sensor external to the electronic brake control module (EBCM). The vehicle stability enhancement system (VSES) uses the lateral accelerometer input when calculating the desired yaw rate. The usable output signal is a serial data CAN circuits.

### Conditions for Running the DTC

The ignition switch is in the ON position.

### Conditions for Setting the DTC

• | The yaw/lateral combination sensor reports an internal failure.

• | calculated offset of yaw/lateral combination sensor signal is out of the specified range

### Action Taken When the DTC Sets

One or more of the following actions may occur:

• | VSES is disabled.

• | A DIC message and/or a warning indicator may be displayed.

### 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 50 consecutive drive cycles.

### Diagnostic Aids

Possible causes of this DTC are as follows:

• | Incorrectly mounted/loose yaw/lateral sensor

• | Internal failure in the yaw/lateral sensor

### 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 Testing

1. Verify DTC C0186 is not set.

⇒ | If the DTC is set, refer to DTC C0186

2. Replace the yaw/lateral sensor

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Longitudinal Accelerometer Replacement

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