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Home >> Hummer >> 2010 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Fixed And MOVEABLE Windows System) >> Diagnostic Information and Procedures >> Power Windows Malfunction (Except Crew Cab) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

Driver Power Window Malfunction

  1. Ignition OFF, disconnect the X1 harness connector at the driver window switch.
  2. Test for less than 1 ohm between the ground circuit terminal 3 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 B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  5. Ignition OFF, connect the X1 harness connector at the driver window switch and disconnect the harness connector at the driver window motor.
  6. Test for less than 5 ohms between the control circuit terminal 1 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 driver window switch.
  7. Test for less than 5 ohms between the control circuit terminal 2 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 driver window switch.
  8. Connect a test lamp between control circuit terminal 1 and control circuit terminal 2.
  9. Command the driver window UP and DOWN by using the driver window switch. The test lamp should illuminate when commanding the UP and DOWN states.
    • If the test lamp remains OFF during either of the commands, test either control circuit for a short to ground. If the circuits test normal, replace the driver window switch.
  10. If all circuits test normal, test or replace the driver window motor.

Passenger Power Window Malfunction

  1. Ignition OFF, disconnect the harness connector at the front passenger window switch.
  2. 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.
  3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 11 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Test for greater than 10 volts between the control circuit terminal 7 and ground.
    • If less than the specified range, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the driver window switch.
  5. Connect at test lamp between the B+ circuit terminal 11 and the signal circuit terminal 8.
  6. Command the passenger window DOWN using the RF window switch on the driver master control, the test lamp should illuminate during the DOWN command.
    • If the test lamp is always OFF, test the signal circuit for a short to voltage or open/high resistance. If the circuit tests normal, replace the driver window switch.
  7. Connect at test lamp between the B+ circuit terminal 11 and the signal circuit terminal 9.
  8. Command the passenger window UP using the RF window switch on the driver master control, the test lamp should illuminate during the UP command.
    • If the test lamp is always OFF, test the signal circuit for a short to voltage or open/high resistance. If the circuit tests normal, replace the driver window switch.
  9. Ignition OFF, connect the harness connector at the front passenger window switch and disconnect the harness connector at the window motor.
  10. Test for less than 1 ohm between the control circuit terminal 1 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 front passenger window switch.
  11. Test for less than 1 ohm between the control circuit terminal 2 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 front passenger window switch.
  12. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 2.
  13. Ignition ON, command the rear window UP and DOWN by using the front passenger window switch. The test lamp should illuminate when commanding the UP and DOWN states.
    • If the test lamp remains OFF during either of the commands, test either control circuit for a short to ground. If the circuits test normal, replace the front passenger window switch.
  14. If all circuits test normal, test or replace the window motor.
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