Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 3: Perform the Steering Position Sensor Test in order to verify if the steering wheel position sensor (SWPS) is operating properly.
- 4: Verify that the Lateral Accelerometer Input parameter is within the valid range.
- 5: Verify that the Yaw Rate Input parameter is within the valid range.
Vehicle Stability Enhancement System Inoperative
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics | ||||
| 1 | Did you perform the ABS Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - ABS |
| 2 |
|
30 seconds | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | With the scan tool, perform the Steering Position Sensor Test. Did the SWPS pass the test? |
- | Go to Step 4 | Go to Step 7 |
| 4 | With a scan tool, observe the Lateral Accelerometer Input 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 | With a scan tool, observe the Yaw Rate Sensor Input parameter in the VSES data list. Does the scan tool display within the specified range? |
2.3-2.7 V | Go to Step 6 | Go to Step 8 |
| 6 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement (CTS) or Electronic Brake Control Module Replacement (CTS-V) . Did you complete the replacement? |
- | Go to Step 9 | - |
| 7 | Replace the steering wheel position sensor (SWPS). Did you complete the replacement? |
- | Go to Step 9 | - |
| 8 | Replace the yaw rate sensor/lateral accelerometer. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you complete the replacement? |
- | Go to Step 9 | - |
| 9 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |