Test Description
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
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.
DTC C0252
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Antilock Brake System Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
- | Go to Step 3 | Go to Step 7 |
| 3 | With a scan tool, observe the Lateral Accelerometer Signal parameter in the Vehicle Stability Enhancement System (VSES) data list. Does the scan tool display within the specified range? |
2.3-2.7 V | Go to Step 4 | Go to Step 8 |
| 4 | With a scan tool, observe the Yaw Rate Signal parameter in the VSES data list. Does the scan tool display within the specified range? |
2.3-2.7 V | Go to Step 5 | Go to Step 8 |
| 5 |
|
- | Go to Step 6 | Go to Diagnostic Aids |
| 6 | Replace the electronic brake control module (EBCM). Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 9 | - |
| 7 | Replace the steering wheel position sensor (SWPS). Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement
. Did you complete the replacement? |
- | Go to Step 9 | - |
| 8 | Replace the yaw rate/lateral accelerometer sensor. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you complete the replacement? |
- | Go to Step 9 | - |
| 9 |
|
- | Go to Step 2 | System OK |