LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed & MOVEABLE Window System >> Diagnostic Information and Procedures >> Power Windows Malfunction >> Circuit/System Testing

Circuit/System Testing

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.

Rear Window Malfunction

  1. Ignition OFF, disconnect the X1 harness connector at the door lock window switch.
  2. Test for less than 1 ohm between the ground circuit terminal 9 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 10 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, connect the X1 harness connector at the door lock window switch and disconnect the harness connector at the appropriate rear window switch.
    5. IMPORTANT: Verify the rear window switches are enabled by checking the lockout switch on the door lock window switch.
  5. Ignition ON, verify that a test lamp illuminates between the control circuit terminal 4 and ground.
    • If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the door lock window switch.
  6. Ignition OFF, test for less than 1 ohm between the signal circuit terminal 3 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the door lock window switch.
  7. Test for less than 1 ohm between the signal circuit terminal 6 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the door lock window switch.
  8. Connect a test lamp between the signal circuit terminal 3 and the signal circuit terminal 6.
  9. Ignition ON, command the rear passenger door window UP and DOWN by using the door lock window switch. The test lamp should illuminate when commanding the UP and DOWN states.
    • If the test lamp does not illuminate during either of the commands, test both signal circuits for a short to ground. If the circuits test normal, test or replace the door lock window switch.
  10. Ignition OFF, connect the harness connector at the rear window switch and disconnect the harness connector at the rear 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, test or replace the rear window switch.
  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, test or replace the rear window switch.
  13. Connect a test lamp between the control circuit terminal A and the control circuit terminal B.
  14. Ignition ON, command the rear window UP and DOWN by using the rear window switch. The test lamp should illuminate when commanding the UP and DOWN states.
    • If the test lamp does not illuminate during either of the commands, test both control circuits for a short to ground. If the circuits test normal, test or replace the rear window switch.
  15. If all circuits test normal, test or replace the rear window motor.

Lockout Switch Malfunction

  1. Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
  2. Connect a test lamp between the control circuit terminal 4 and ground.
  3. Ignition ON, command the rear window lockout ON and OFF by pressing and depressing the lockout switch on the door lock window switch. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the door lock window switch.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the door lock window switch.
  4. If all circuits test normal, test or replace the rear window switch.
scientia non olet · About LEMON Manuals