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Home >> Pontiac >> 2008 >> G8 Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed & MOVEABLE Window Systems >> Diagnostic Information and Procedures >> Power Windows Malfunction >> Circuit/System Testing >> Front Window Malfunction

Front Window Malfunction

  1. Ignition OFF, disconnect the X2 harness connector at the door lock window switch.
  2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  3. Ignition OFF, connect the X2 harness connector at the door lock window switch and disconnect the harness connector at the window control module.
  4. Test for less than 1 ohm between the ground circuit terminal 5 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  5. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 8 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  6. Connect a test lamp between the appropriate signal circuit terminal listed below and ground:
    • Terminal 12
    • Terminal 9
  7. Command the power window DOWN by using the window switch on the door lock window switch. The test lamp should illuminate during the DOWN command.
    • If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the door lock window switch.
    • If the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, test or replace the door lock window switch.
  8. Connect a test lamp between the appropriate signal circuit terminal listed below and ground:
    • Terminal 6
    • Terminal 3
  9. Command the power window UP by using the window switch on the door lock window switch. The test lamp should illuminate during the UP command.
    • If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the door lock window switch.
    • If the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, test or replace the door lock window switch.
  10. Ignition OFF, connect the harness connector at the window control module and disconnect the harness connector at the appropriate front window motor.
  11. Test for less than 5 ohms between the control circuit terminal A and ground.
    • If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the window control module.
  12. Test for less than 5 ohms between the control circuit terminal B and ground.
    • If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the window control module
  13. Ignition ON, connect a test lamp between the control circuit terminal A and control circuit terminal B.
  14. Command the power window UP and DOWN by using the window switch on the door lock window switch. The test lamp should illuminate during the UP and DOWN command.
    • If the test lamp is always OFF during either for the commands, test either control circuit for a short to ground. If the circuit tests normal, replace the window control module.
  15. If all circuits test normal, test or replace the front window motor.
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