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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 96 (Fixed & MOVEABLE Window Systems) >> Diagnostic Information and Procedures >> Power Window Inoperative - Driver Door >> Circuit/System Testing

Circuit/System Testing

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  1. Install a scan tool and display the Driver Door Switch Inputs data list.
  2. Activate the driver window switch in the up, down, and express down positions and verify that the Driver LF Window Switch displays the correct parameter in relation to the actual switch position.
    • If the switch parameter is incorrect, replace the DDS.
  3. Disconnect the power window motor connector and connect a test lamp between the control circuit terminals in the harness connector.
  4. Verify that the test lamp illuminates when the switch is activated in both directions.
    • If the test lamp does not illuminate, test the window motor control circuits for a open/high resistance. If the circuits test normal replace the DDS.
  5. If the circuits test normal replace the driver window motor.
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