Inspection Procedure
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Check the door lock motor. See appropriate DOOR LOCK MOTOR test under COMPONENT TESTS under POWER DOOR LOCKS & TRUNK LID article under DOOR LOCKS & ANTI-THEFT SYSTEMS in ACCESSORIES & EQUIPMENT. If the results are OK, go to the next step. If the results are not OK, replace the door lock motor. See DOOR LOCK ASSEMBLY under REMOVAL & INSTALLATION under POWER DOOR LOCKS & TRUNK LID article under DOOR LOCKS & ANTI-THEFT SYSTEMS in ACCESSORIES & EQUIPMENT.
- Check the wiring harness and connector between the door lock motor and body ECU. See WIRING DIAGRAMS . If the results are OK, the circuit is OK. Further diagnosis is needed. If the results are not OK, repair or replace the wiring harness or connector.