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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Suspension Control System - Suspension Leveling - ASCM) >> Diagnostic Information and Procedures >> Air Suspension Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, command the Compressor Relay ON and OFF with a scan tool. Verify that the compressor turns ON and OFF with each command.
    • If the compressor does not operate or operates continuously, refer to Compressor Malfunction in Circuit/System Testing .
  2. Ignition ON, command the exhaust valve ON and OFF with a scan tool. Verify the exhaust valve clicks and the vehicle height changes with each command.
    • If the exhaust valve does not click or the vehicle height does not change, refer to Exhaust Valve Malfunction in Circuit/System Testing .
  3. Ignition ON, command the LR and RR Control Valves ON and OFF with a scan tool. Verify the control valves click and the vehicle applicable rear corner height changes with each command.
    • If a control valve does not click or the applicable rear corner height does not change, refer to Control Valve Malfunction in Circuit/System Testing .
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