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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the appropriate driver or passenger window motor.
  2. Connect a test lamp between the control circuit terminal A and control circuit terminal B.
  3. Ignition ON, command the window UP and DOWN by using the door lock/window switch. The test lamp should turn ON when commanding the UP and DOWN states.
    • If the test lamp is always OFF during either of the commands, test either control circuit for a short to ground or open/high resistance. If the circuits test normal, replace the door lock/window switch.
    • If the test lamp is always ON, test either control circuit for a short to voltage. If the circuits test normal, replace the door lock/window switch.
  4. If all circuits test normal, test or replace the window motor.
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