Test No. 68: Front Passenger Door Power Window Does Not Operate
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- Check the following fuses located in driver side junction block: ECU-B (7.5-amp), ECU-IG NO. 2 (10-amp) and FR P/W (20-amp). Check the following fuse located in engine compartment junction block: DCC (30-amp). Check power main relay located in driver side junction block. See Figure. See POWER MAIN RELAY under COMPONENT TESTS. If relay and fuses are okay, go to next step. If relay or any fuse is defective, repair wiring for appropriate fuse or relay. See POWER DISTRIBUTION and POWER WINDOWS in SYSTEM WIRING DIAGRAMS article. After repairs, perform confirmation test. See CONFIRMATION TEST .
- Turn ignition off. Remove front passenger door ECU from front passenger door. Disconnect front passenger door ECU 20-pin electrical harness connector. Using DVOM, check voltage between ground circuit at front passenger door ECU 20-pin electrical harness connector terminal No. 8 (White/Black wire) and power circuits at terminal No. 12 (White/Green wire) and terminal No. 20 (Blue/Black wire). Blue/Black wire changes to a Blue wire at right front door-to-instrument panel harness connection located behind right kick panel. Voltage should be 10-14 volts. If all voltage readings are within specification, go to next step. If either voltage reading is not within specification, repair power feed circuit from battery. See POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article. After repairs, perform confirmation test. See CONFIRMATION TEST .
- With ignition off and front passenger door ECU 20-pin electrical harness connector disconnected, check for opens and shorts in wiring harnesses and electrical connectors between battery and front passenger door ECU and between body ground points at left and right kick panels and front passenger door ECU. See POWER DISTRIBUTION and GROUND DISTRIBUTION in SYSTEM WIRING DIAGRAMS article. If wiring harnesses and electrical connectors are okay, go to next step. If wiring harnesses or electrical connectors are defective, repair as necessary. After repairs, perform confirmation test. See CONFIRMATION TEST .
- Substitute original front passenger door ECU with a known-good unit and recheck power window system operation. If power window operates properly, original front passenger door ECU was defective. If power window still does not operate properly, perform front passenger door ECU pin voltage check. See FRONT PASSENGER DOOR ELECTRONIC CONTROL UNIT under PIN VOLTAGE TESTS. Check wiring harness and electrical connectors for an intermittent problem. Repair wiring harnesses or connectors as necessary. If voltage values, harnesses and connectors are okay, replace front passenger door ECU. After repairs, perform confirmation test. See CONFIRMATION TEST .