Diesel Data: Automotive Repair

Power Locks: Description and Operation

System Diagram:




SYSTEM DIAGRAM

SYSTEM DESCRIPTION

1. POWER DOOR LOCK CONTROL SYSTEM DESCRIPTION

a. The power door lock system locks/unlocks all the doors simultaneously.

The master switch and the door control switch (on the passenger side door) send lock/unlock request signals to the door lock control relay. Then, the door lock control relay sends these requests to the lock motors in each door to lock/unlock all the doors simultaneously.

Operating the driver side and passenger side door locks using a key sends lock/unlock request signals to the door lock control relay. The driver side door key-linked lock function has an optional unlock method called the "2-step unlock function". Please refer to the chart in step b. for details on this function.




b. The power door lock control system has the following functions: