Power Locks: Description and Operation

SYSTEM OUTLINE

1. MANUAL UNLOCK OPERATION
When the door lock control SW on the center console is pressed to the UNLOCK, the signal is input to TERMINAL UL1 of the body ECU. The current flows from TERMINAL ACT- of the body ECU into the door lock motor to TERMINAL ACT+ of the body ECU to GROUND, to unlock the door.

2. MANUAL LOCK OPERATION
When the door lock control SW on the center console is pressed to LOCK, signal is input to TERMINAL L1 of the body ECU. The current flows from TERMINAL ACT+ of the body ECU to door lock motor to TERMINAL ACT- of the body ECU to GROUND, to lock the door.

3. DOOR KEY UNLOCK OPERATION
Unlock operation from driver door
When the door is unlocked once by the ignition key from the driver side, the signal from the door key lock and unlock SW in the door lock motor front LH is input to TERMINAL UL3 of the body ECU. This signal activates the body ECU to flow the current from TERMINAL ACT+ of the body ECU into the door lock motor front LH to TERMINAL ACT- of the body ECU to GROUND, to unlock only the driver door. Accordingly, if the second unlock operation is made within 3 sec. after the above unlock operation.
Unlock operation from passenger door
When the door is unlocked by the ignition key from the passenger side, the signal from the door key lock and unlock SW in the door lock motor front RH is input to TERMINAL UL2 of the body ECU. The current flows from TERMINAL ACT- of the body ECU into the door lock motor front RH to TERMINAL ACT+ of the body ECU to GROUND, to unlock all the doors at once.

4. IGNITION KEY REMINDER OPERATION
When the door lock operation is made using the door knob with the ignition key remained inserted in the key cylinder and the door open, unlock operation is automatically made. Additionally, if lock operation is made with the door lock control SW or door key lock and unlock SW, unlock operation is automatically made after the lock operation has been completed.