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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 321 (Frame And Underbody) >> Diagnostic Information and Procedures >> Power Assist Step Malfunction >> Circuit/System Verification

Circuit/System Verification

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  1. Observe the scan tool ASC Disable Switch parameter while activating and deactivating the power assist steps. The reading should change between Active and Inactive.
    • If the parameter does not change between the specified values, refer to ASC Disable Switch Circuit Test below.
  2. Power assist steps enabled, OPEN and CLOSE each vehicle door, the assist steps should extend when the door is OPENED, and retract when the door is CLOSED.
    • If the function does not perform as specified, refer to ASC Actuator Circuit Test below.
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