Door Key Unlock Operation
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
- Unlock Operation From Driver Door - When unlocking from the driver door with the ignition key, a signal from the door key lock and unlock switch is input to TERMINAL KUL of the driver door ECU. As a result, the driver door ECU operates and the current flows from TERMINAL A- of the driver door ECU to the door lock motor to TERMINAL A+ of the door ECU to GROUND, and unlocks the driver side door only. When the second unlock operation is made within 3 seconds after the first unlock operation, all doors are unlocked through the communication control of the body ECU and door ECU. See WIRING DIAGRAMS .
- Unlock Operation From Passenger Door - When unlocking from the passenger door with the ignition key, a signal from the door key lock and unlock switch is input to TERMINAL KUL of the driver door ECU. As a result, through communication control of the body ECU and door ECU, the current flows from TERMINAL A- of the door ECU to the door lock motor to TERMINAL A+ of the door ECU to GROUND, and unlocks all the doors at once. See WIRING DIAGRAMS .