The door lock control system does not simply lock/unlock the doors by mechanical operation, but also controls the electric motor according to the operation of the door lock control switch and key.
The system also has key confine prevention function, two-step unlock function and security function. The functions covered by the system vary depending on the model, grade and area.
The door lock control system includes the following functions. The functions covered by the system vary depending on the model, grade and area.
(1)Manual lock/unlock function
When the door lock control switch is operated on the lock/unlock side, all the doors are locked/unlocked.
(2)Door key linked lock/unlock function
When the key is inserted into the key cylinder of the driver’s/front passenger’s door and turned to lock/unlock, all the doors are locked/unlocked.
When the door is locked/unlocked by the key, only the door can also be locked or unlocked by mechanical operation.
Recently, some models do not have a door key cylinder on the front passenger’s door.
(3)Two-step unlock function
This function is the unlock function with the key. When the key is used to unlock a door, only that door is opened mechanically with the first unlock operation. Other doors are opened with the second unlock operation.
(4)Key confine prevention function
When the driver’s door is open and the key is left in the ignition key cylinder, operating the door lock knob to the lock position (with the door lock position switch off) unlocks all the doors because of the key confine prevention circuit. When the door lock control switch is operated to lock the doors in the above condition, all the doors are locked once and unlocked again because of the activation by the key confine prevention circuit.
To prevent the door from being unlocked by operating the door lock control switch with a bar or equivalent in the space between the door glass and door sash when the window is left open, performing lock operation by any means of door key or transmitter (wireless remote door lock controller) will set the door lock security function and invalidate the unlock operation by the door control switch.
(6)Key-off power window function
In some door lock control systems, key-off relay in the integration relay controls the power supply to the power window system when the key-off power window function is being activated.