Electronic Suspension Strut Actuator Test HSV

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

The electronic suspension control (ESC) module commands variable levels of pulse width modulated current to each dampener in response to rough and abrupt steering manoeuvring driving conditions. The ESC module continuously compares each dampeners command state with the state of their feedback circuits to ensure they agree. This test enables the technician to operate the actuators individually to aid diagnosis if no DTC's are set.

Scan Tool Reference

Control Module References

1. Connect a scan tool to the DLC and select Chassis / ESC (Electronic Suspension Control) / Actuator Test / Static Test Damper / Front .
2. Lightly bounce the left front corner of the vehicle to provide an indication of the suspension rebound performance.
3. Use the Change soft key on the scan tool to select Left On , then press the Start soft key. Verify the scan tool screen displays the appropriate selection.
4. Lightly bounce the left front corner of the vehicle to provide an indication of the suspension rebound performance

⇒	The left front corner of the suspension should be noticeably firmer than the first test.

⇒	If no change, replace the appropriate strut assembly. Refer to Strut Assembly Replacement .

1. Connect a scan tool to the DLC and select Chassis / ESC (Electronic Suspension Control) / Actuator Test / Static Test Damper / Front .
2. Lightly bounce the right front corner of the vehicle to provide an indication of the suspension rebound performance.
3. Use the Change soft key on the scan tool to select Right On , then press the Start soft key. Verify the scan tool screen displays the appropriate selection.
4. Lightly bounce the right front corner of the vehicle to provide an indication of the suspension rebound performance

⇒	The right front corner of the suspension should be noticeably firmer than the first test.

⇒	If no change, replace the appropriate strut assembly. Refer to Strut Assembly Replacement .

1. Connect a scan tool to the DLC and select Chassis / ESC (Electronic Suspension Control) / Actuator Test / Static Test Damper / Rear .
2. Lightly bounce the left rear corner of the vehicle to provide an indication of the suspension rebound performance.
3. Use the Change soft key on the scan tool to select Left On , then press the Start soft key. Verify the scan tool screen displays the appropriate selection.
4. Lightly bounce the left rear corner of the vehicle to provide an indication of the suspension rebound performance

⇒	The left rear corner of the suspension should be noticeably firmer than the first test.

⇒	If no change, replace the appropriate strut assembly. Refer to Strut Assembly Replacement Strut Assembly Replacement

1. Connect a scan tool to the DLC and select Chassis / ESC (Electronic Suspension Control) / Actuator Test / Static Test Damper / Rear .
2. Lightly bounce the right rear corner of the vehicle to provide an indication of the suspension rebound performance.
3. Use the Change soft key on the scan tool to select Right On , then press the Start soft key. Verify the scan tool screen displays the appropriate selection.
4. Lightly bounce the right rear corner of the vehicle to provide an indication of the suspension rebound performance

⇒	The right rear corner of the suspension should be noticeably firmer than the first test.

⇒	If no change, replace the appropriate strut assembly. Refer to Strut Assembly Replacement Strut Assembly Replacement

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Strut Assembly Replacement Strut Replacement