Structure and Composition
The central control door lock and anti-theft system(Fig.3.71)is mainly composed of door control switch,BCM,door lock,remote control key and anti-theft indicator light etc.
Fig.3.71 Main Components of Central Control Door Lock and Anti-theft System
1)Door Control Switch
（1）Door Control Switch:Installed on the handle of each door.Pushing the switch forward locks the door and pushing the switch backward unlocks the door.
（2）Central Door Lock Switch:Central door lock switch is installed on the driver’s side door and use the key to lock/unlock the left front door or operate the lock button switch of left front door handle,other doors will do the same lock/unlock action without turn light flickering;central door lock switch can make the inner switch of left front door lock motor realize the different connections through mechanical operation so as to control other door lock motors.There are five wires in the left front door lock motor and only two wires in other door lock motors.
（3）Door Closing Status:Press the LOCK switch and all the doors are locked(Pressing once means locking once and even if the pressing status is kept,the remote control can be used normally);Press the UNLOCK switch and all the doors are unlocked(Pressing once means unlocking once and even if the pressing status is kept,the remote control can be used normally).
When the door is open,use the central control door lock button to lock,the switch is in locking position firstly and then the closing lock button will pop back to the open status automatically.
（4）Remote Control Door Lock Operation:After the car is shut down and the doors are closed,pressing the“Lock”button of remote control will bring about the door lock response and all the doors are locked with turn light flickering once.
（5）Remote Control Door Unlock Operation:After the car is shut down,every time the“Unlock”button is pressed,the unlock action will be carried out once;all the doors are unlocked with turn light flickering twice.(https://www.daowen.com)
2)Door Lock Motor Assembly
Door lock motor assembly is composed of reversible motor,transmission mechanism and lock assembly.The motor makes the transmission mechanism drive the lock assembly,causing the locking and unlocking of the doors.The motor is shown in Fig.3.72 and wire harness plug is shown in Fig.3.73.
Fig.3.72 Left Front Door Lock Motor Assembly
Fig.3.73 Left Front Door Wire Harness Plug
3)Remote Control Key
Remote control key is mainly used to open and lock the door mechanically and operate the ignition switch.Besides,it has other functions,such as opening the doors,locking the doors,opening the trunk,making and canceling the warning through remote control.
Note:
Replacing the remote control transmitter needs to program BCM with fault diagnostic unit.