Inspection Procedure
WARNING: This page is about a different car, the 2002 Lexus GS 430 and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Check the power window switch circuit using the DTC check. See MULTIPLEX COMMUNICATION SYSTEM
article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. If the results are OK, go to the next step. If the results are not good, check the following:
- Power Window Motor Circuit. See POWER WINDOW MOTOR CIRCUIT (FRONT) .
- Passenger Door ECU.
- Check the power window switch. See POWER WINDOW SWITCH (PASSENGER & REAR) under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window switch. See POWER WINDOW MASTER SWITCH under REMOVAL & INSTALLATION.
- Check the wire harness and connector between the power window switch and passenger door ECU. If the results are OK, go to the next step. If the results are not good, repair or replace the wire harness or connector.
- Check the wire harness and connector between the power window switch and power window master switch. If the results are OK, check the following:
- Power Window Motor Circuit. See POWER WINDOW MOTOR CIRCUIT (FRONT) .
- Passenger Door ECU.