C0253
DTC C0253
Circuit Description
The usable output voltage range for the lateral accelerometer and yaw rate sensors is 0.25-4.75 volts. The scan tool will report zero lateral acceleration or yaw rate as 2.5 volts with no sensor bias present. The sensor bias compensates for sensor mounting alignment errors, electronic signal errors, temperature changes, and manufacturing differences.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0253 Centering Error
Conditions for Running the DTC
The vehicle speed is greater than 40 km/h (25 mph).
Conditions for Setting the DTC
The vehicle has been driven for 10 minutes without completing steer angle centering.
Action Taken When the DTC Sets
* The EBCM disables the VSES for the duration of the ignition cycle.
* The DIC displays the Service Stability System message.
* The ABS/TCS remains functional.
Conditions for Clearing the DTC
* The condition for 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
The following conditions can cause this concern:
* Improper steering alignment.
* Open, short to ground, or short to voltage.
* Internal lateral accelerometer failure.
* EBCM internal failure.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Perform the Steering Position Sensor Test in order to verify that the steering wheel position sensor (SWPS) is operating properly.
3. Verify that the Lateral Accelerometer Signal parameter is within the valid range.
4. Verify that the Yaw Rate Signal parameter is within the valid range.
