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Driver's Door Window Does Not Work

WARNING: This page is about a different car, the 2000 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

  1. Testing Driver's Door ECU

    Check all voltage inputs to driver's door ECU. See DRIVER'S DOOR ECU  under PIN VOLTAGE TESTS. If any voltage inputs are not as specified, repair affected circuit and retest system. See WIRING DIAGRAMS . If all voltage inputs are as specified, substitute known-good driver's door ECU and retest system. If system now works properly, replace driver's door ECU. If system still does not work, reinstall original driver's door ECU and go to next step.
    2. NOTE: After testing driver's power window motor, it will need to be reset to initial position for limit switch operation. See RESETTING POWER WINDOW MOTOR RESET & PULSE SWITCH under PROGRAMMING in POWER WINDOWS - CARS article.

  2. Testing Driver's Power Window Motor & Circuit
    Remove driver's door panel. Disconnect power window motor 6-pin connector. Apply battery voltage to power window motor 6-pin connector Red wire, and apply ground to power window motor 6-pin connector Green wire. Window should move. Reverse leads and retest. Window should move in opposite direction. If window operation is not as specified, replace power window motor. If window operation is as specified, go to next step.
  3. Using DVOM, check continuity in the following circuits:
    • On Red wire between power window motor 6-pin harness connector and driver's door ECU harness connector terminal No. 14. See Figure.
    • On Green wire between power window motor 6-pin harness connector and driver's door ECU harness connector terminal No. 1.
    • On Pink wire between power window motor 6-pin harness connector and driver's door ECU harness connector terminal No. 3.
    • On Yellow wire between power window motor 6-pin harness connector and driver's door ECU harness connector terminal No. 2
    • On White wire between power window motor 6-pin harness connector and driver's door ECU harness connector terminal No. 4.
    If any circuit does not have continuity, repair as necessary and retest system. If continuity exists on all circuits, go to next step.

  4. Testing Body Control ECU

    Check all voltage inputs to body control ECU. See BODY CONTROL ECU  under PIN VOLTAGE TESTS. If any voltage inputs are not as specified, repair affected circuit and retest system. See WIRING DIAGRAMS . If all voltage inputs are as specified, substitute known-good body control ECU and retest system. If system now works properly, replace body control ECU. If system still does not work, recheck all related system wiring and connections.
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