System Outline

Current always flows to TERMINAL 8 of the Door Lock Control Relay through the Door fuse.
When the Ignition SW turned ON, current flows through the Gauge fuse to TERMINAL 1 of the ECU.

1. MANUAL LOCK OPERATION
When the Door Control SW or key SW are pushed to lock position, a lock signal is input to TERMINAL 10, 12 (For Key SW) of the Door Lock Control Relay, causing the ECU to function. Current flows from TERMINAL 8 of the ECU to TERMINAL 4 --> TERMINAL 7 of the Door Lock Motors --> TERMINAL 5 --> TERMINAL 3 of the ECU --> TERMINAL 16 --> Ground and the Door Lock Motor causes the Door to lock.
2. MANUAL UNLOCK OPERATION
When the Door Lock Control SW or key SW are pushed to Unlockposition, an unlock signal is input to TERMINAL 11, 9 (For Key SW LH) or 13 (For Key SW RH) of the Door Lock Control Relay, causing the ECU to function. Current flows from TERMINAL 8 of the ECU to TERMINAL 3 --> TERMINAL 5 of the Door Lock Motors --> TERMINAL 7 --> TERMINAL 4 of the ECU --> TERMINAL --> 16 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. 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 Motor), the Door is locked once but each Door is unlocked soon by the operation of the ECU. As a result of the ECU activation, current flows from TERMINAL 8 of the ECU to TERMINAL 3 --> TERMINAL 5 of the Door Lock Motors --> TERMINAL 7 --> TERMINAL 4 of the ECU --> TERMINAL 16 --> Ground, causing all the Doors to unlock. The same applies to operation of the Door Lock Control SW and the Door lock key SW.

^ Keyless Lock Operation
When the Ignition key is still inserted in the Cylinder (Unlock Warning SW ON), the Door is opened 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.