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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 129 (Power Seat System) >> Diagnostic Information and Procedures >> Power Seat Inoperative (w/o Memory) >> Circuit/System Testing

Circuit/System Testing

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  1. Disconnect the seat adjuster or power lumbar switch connector.
  2. Verify that a test lamp illuminates when connected from battery voltage to the ground circuit terminal.
    • If the test lamp does not illuminate, repair the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminates when connected from the battery supply circuit terminal to ground.
    • If the test lamp does not illuminate, repair the battery supply circuit for an open/high resistance or short to ground.
  4. Connect the seat adjuster or power lumbar switch connector and disconnect the inoperative motor assembly connector.
  5. Connect a test lamp across the inoperative motor control circuit terminals.
  6. Verify that the test lamp illuminates when the appropriate switch is pressed.
    • If the test lamp does not illuminate, repair the motor circuits for an open/high resistance or short to ground. If the circuits test normal replace the seat adjuster or power lumbar switch.
  7. If the circuits test normal, replace the inoperative motor assembly.
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