System Outline

Current always flows to TERMINAL B-9 of the Theft Deterrent and Door Lock Control ECU through the POWER fuse, and to TERMINAL A-1 through the DOME fuse.

1. MANUAL LOCK OPERATION
When the Front Door Lock Control SW LH or Door Key Lock and Unlock SW are pushed to LOCK position, a lock signal is input to TERMINAL A-5, or A-22 of the Theft Deterrent and Door Lock Control ECU and causes the ECU to function. Current flows from TERMINAL B-9 of the ECU --> TERMINAL B-3 to TERMINAL 5 (Front doors), TERMINALS 4 (Rear doors) of the Door Lock Motors to TERMINAL 4 (Front doors), TERMINALS 2 (Rear doors) to TERMINAL B-2 of the ECU to TERMINAL B-4 to GROUND and the Door Lock control Motor causes the door to lock.

2. MANUAL UNLOCK OPERATION
When the Door Lock Control SW LH or Door Key Lock and Unlock SW is pushed to UNLOCK position, an unlock signal is input to TERMINAL A-8, A-6 or A-16 of the Theft Deterrent and Door Lock Control ECU and causes to function. Current flows from TERMINAL B-9 of the ECU --> TERMINAL B-2 to TERMINALS 4 (Front doors), TERMINALS 2 (Rear doors) of the Door Lock Motors to TERMINAL 5 (Front doors), TERMINALS 4 (Rear doors) to TERMINAL B-3 of the ECU to TERMINAL B-4 to GROUND and the Door Lock Motor causes the door to unlock.

When unlock operation occurs using the LH Door Key SW, performing the unlock operation once unlocks only the driver's door. To unlock all the other doors together, unlock operation must be performed again within 3 seconds of the first operation.

3. DOUBLE OPERATION UNLOCK OPERATION
When the Door Key Lock and Unlock SW LH is turned to the unlock side, only the driver's door is mechanically unlocked. Turning the Door Key Lock and Unlock SW LH to the unlock side causes a signal to be input to TERMINAL A-6 of the Theft Deterrent and Door Lock Control ECU, and if the signal input again within 3 seconds by turning the SW to the unlock side again, current flows from TERMINAL B-9 of the ECU to TERMINAL B-2 to TERMINALS 4 (Front doors), TERMINALS 2 (Rear doors) of the Door Lock Motor to TERMINALS 5 (Front Doors), TERMINALS 4 (Rear doors) to TERMINAL B-3 of the ECU to TERMINAL B-4 to GROUND and the Door Lock Motor causes the door to unlock.

4. IGNITION KEY REMINDER OPERATION
* Operation of door lock button (operation of Door Lock Motors)
When the Ignition Key is in the cylinder (unlock warning SW ON) and the door is opened and locked using door lock button (Door Lock Control Motor), the door is locked once but each door is unlocked soon by the operation of the ECU. As a result of ECU activation, the current flows from TERMINAL B-9 of the ECU to TERMINAL B-2 to TERMINALS 4 (Front doors), TERMINALS 2 (Rear doors) of the Door Lock Motors to TERMINALS 5 (Front doors), TERMINALS 4 (Rear doors) to TERMINAL B-3 of the ECU to TERMINAL B-4 to GROUND and causes all the doors to unlock.

* Key Less Lock Operation
When the Ignition Key is still inserted in the cylinder (unlock warning SW ON), the door is open and unlock operation is prevented by keeping the door lock button pressed to the lock side, the door is kept in the lock condition. If the door is then closed, a signal is input to the ECU from the door courtesy SW. This activates the ECU and each door is unlocked.