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Home >> Pontiac >> 2005 >> GTO Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 101 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> Vehicle Stability Enhancement System Inoperative >> Test Description

Test Description

WARNING: This page is about a different car, the 2005 Chevrolet Corvette. 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.

  1. 3:  Perform the Steering Position Sensor Test in order to verify if the steering wheel position sensor (SWPS) is operating properly.
  2. 4:  Verify that the Lateral Accelerometer Signal parameter is within the valid range.
  3. 5:  Verify that the Yaw Rate Signal 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 Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Install a scan tool.
  2. Start the engine.
  3. Observe the Vehicle Stability Enhancement System (VSES) Enabled parameter in the VSES data list.
  4. Perform the diagnostic test drive. Refer to Diagnostic Test Drive .
Did the scan tool display Yes within the specified value?
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 steering wheel position sensor (SWPS) pass the test?
- Go to Step 4  Go to Step 7 
4  With a scan tool, observe the Lateral Accelerometer 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  With a scan tool, observe the Yaw Rate Signal 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 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 9  -
7 Replace the SWPS. Refer to Steering Wheel Position Sensor Centering in Steering Wheel and Column.
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 Operate the system in order to verify the repair.
Did you correct the condition?
- System OK Go to Step 2