Test Description

The numbers below refer to the step numbers on the diagnostic table.

2: Verify that the Lateral Acceleration and Yaw Rate Signal parameter is within the valid range.
3: Perform the Steering Position Sensor Test in order to verify that the SWPS is operating properly.

DTC C0253 or C0254

Step	Action	Values	Yes	No
Schematic Reference: ABS Schematics
1	Did you perform the Diagnostic System Check - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	IMPORTANT: If present, diagnose any other vehicle stability enhancement system (VSES) DTCs first. Wheel alignment issues should be corrected before diagnosis of this DTC. Drive the vehicle on a straight and level path greater than 40 km/h (25 mph). With a scan tool, observe the Lateral Accelerometer Signal and Yaw Rate Signal parameter in the VSES data list. Does the scan tool display both parameters within the specified range?	2.3-2.7 V	Go to Step 3	Go to Step 6
3	Perform the Steering Wheel Position Test. Did the steering wheel position sensor (SWPS) pass the test?	-	Go to Step 4	Go to Step 5
4	Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	-	Go to Step 7	-
5	Replace the SWPS. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement in Steering Wheel and Column. Did you complete the replacement?	-	Go to Step 7	-
6	Replace the yaw rate/lateral accelerometer sensor. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you complete the replacement?	-	Go to Step 7	-
7	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	-	Go to Step 2	System OK