DTC B1222/22: DRIVER'S DOOR LOCK CONTROL SWITCH CIRCUIT Lexus RX I

Check driver's door lock control switch. Driver's door lock control switch is part of driver's door ECU. To check driver's door ECU, go to appropriate wiring diagram in POWER DOOR LOCKS, TRUNK LID & FUEL DOOR RELEASE article. Check driver door key lock and unlock switch. See COMPONENT TESTS in BODY CONTROL SYSTEMS - RX300 article. If driver door key lock and unlock switch is okay, check driver door key lock and unlock switch circuit. See CIRCUIT TESTS in BODY CONTROL SYSTEMS - RX300 article.