Central locking (Japan) – circuit operation

CENTRAL LOCKING (JAPAN) – CIRCUIT OPERATION

CIRCUIT OPERATION

Fuses F1 and F5 of the Satellite Fuse Box 1 (P127) and F4 of the engine compartment Fuse Box (P125) supply voltage to the Central Locking Control Unit (Z113). The control unit is grounded at terminals 10 and 11 of C274 to ground E201.

Central Locking Control Unit (Z113)

Central locking is controlled by the Central Locking Control Unit (Z113) and may be operated by the key, sill button(s) or handset. The system works on the driver’s door only. NOTE: The central door locking system will shut down for a period of approximately 15 seconds if the Central Locking Control Unit (Z113) determines that the lock actuators could be overheating.

 The Central Locking Control Unit (Z113) monitors the position of the front door locks through an input switch which is part of the right Front Door Lock Actuator (M122). When the control unit sees the input switch change position, the control unit responds by locking or unlocking the doors and the tailgate.

 The Central Locking Control Unit (Z113) locks the doors and the tailgate by momentarily applying battery voltage to the actuators through the K wire. The lock actuators are grounded by the Central Locking Control Unit (Z113) through the O wire. The actuators now move to the locked position.

 To unlock the doors and the tailgate the Central Locking Control Unit (Z113) momentarily applies battery voltage to the actuators through the O wire. The actuators are grounded by the Central Locking Control Unit (Z113 through the K wire. The lock actuators now unlock.