C0252

DTC C0252

Diagnostic Instructions

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

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

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0252 00

-
Vehicle Stability Control Module Sensors Correlation

Circuit/System Description

The yaw rate, lateral acceleration and longitudinal acceleration sensors are combined into one multi-axis acceleration sensor. The electronic brake control module controls the stability control by monitoring the inputs of the yaw rate sensor, lateral acceleration sensor, and steering angle sensor. The readings are compared to an internal calibrated value so it knows if the vehicle is having an instability condition to activate the stability control.

Conditions for Running the DTC

The vehicle is operated at a speed greater than 13 km/h (8 MPH).

Conditions for Setting the DTC

When the vehicle is driven in a straight line the multi-axis acceleration sensor, the steering wheel angle sensor, and the vehicle speed correlation is not recognized after a distance of 2.5 km (1.5 mi).

Action Taken When the DTC Sets

* The traction control/stability control-active indicator turns ON.

* The electronic brake control module disables the stability control and hill start assist for the duration of the ignition cycle.

Conditions for Clearing the DTC

* A current DTC clears when the diagnostic runs and passes.

* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

The following conditions can cause this concern:

* An improperly mounted or loose multi-axis acceleration sensor

* The car should not pull in either direction causing the steering wheel to be off center while driving in a straight line on a level surface.

Reference Information

Schematic Reference

Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems

Connector End View Reference

Component Connector End Views Sunshade - Left (DH6)

Description and Operation

ABS Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Verify that DTC C0187, C018B, C0196, C019B, C0287, C0297, or C0710 is not set.

• If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

• If none of the DTCs are set

3. Replace the B119 Multi-axis Acceleration Sensor.

4. Ignition ON.

5. Verify DTC C0252 does not set while operating the vehicle under the Conditions for Running the DTC.

• If the DTC is set

1. Replace the B99 Steering Wheel Angle Sensor.

2. Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.

• If the DTC sets, replace the K17 Electronic Brake Control Module.

• If the DTC does not set

3. All OK.

• If the DTC is not set

6. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Steering Angle Sensor Replacement Removal and Replacement

* Control Module References Control Module References for electronic brake control module replacement, programming and setup