Component Tests and General Diagnostics

This test is used to determine if all inputs to the air suspension control module are connected and functioning. If one or any combination of inputs is not connected correctly, the vehicle may feel excessively harsh or bouncy. Also, the system may not raise or lower the vehicle correctly.
To set up the vehicle for the test, carry out the following:
1. Connect New Generation STAR (NGS) Tester to the Data Link Connector (DLC).
2. Monitor the following PIDs using the NGS Tester PID Monitor screen:
- VSS_ARC.
- IGN_RUN.
- STEER_A.
- STEER_B.
- BOO_ARC.
- DR_OPEN.
- PCM_ACC.

3. Configure the air suspension control module:
- Vehicle stopped.
- Ignition switch in the ON position.
- Regular brake not applied.
- All doors closed, including rear tailgate and tailgate glass.
- No throttle.