Central door locking operation (Body)

CENTRAL DOOR LOCKING OPERATION

Driver and Passenger Door(s)

The central door locking can be operated from either the Central Door Locking (CDL) switch on the fascia, the remote handset or the vehicle key in the driver’s door lock.

All aspects of the central door locking system are controlled by the Central Control Unit (CCU). The driver and the passenger doors can be CDL locked or superlocked.

Locking or unlocking the driver’s door using the vehicle key, mechanically operates the driver’s door latch. The mechanical operation simultaneously operates a switch within the latch mechanism which completes an earth path to the CCU. The CCU uses the earth path as a signal to electrically operate the remaining door lock motor(s) and lock or unlock the passenger door(s). Each latch assembly contains separate motors for CDL locking and superlocking.

Locking and unlocking using the CDL switch or the remote handset is controlled electrically by the CCU.

Each outer door handle is connected to its respective latch assembly via a linkage. Each interior release handle is connected to the latch assembly via a cable. A door sill button is connected to each latch assembly and gives a visual indication to the locked or unlocked condition of each door. The button also allows each door to be individually locked from inside the vehicle.

On 5 door models, both rear doors have a child door lock facility. A small lever near the latch, when selected, prevents the doors from being opened from the interior of the vehicle. The doors can only be opened using the outside door handles.

Each door latch assembly also contains a switch which informs the CCU if a door is open. A warning lamp on the instrument panel warns if an open door condition is sensed by the CCU. The switch also operates in conjunction with the vehicle alarm system if a door is opened when the alarm is armed.

Tail Door

The tail door has no locking facility. When the vehicle is locked, the CCU ignores operation of the tail door handle. The door cannot be opened until the CCU authorises electrical operation of the tail door actuator which mechanically operates the tail door latch.

The tail door handle contains a switch, which is operated when the handle is pulled. The switch completes an earth path to the CCU. The CCU uses the earth path as a signal to electrically operate the latch actuator to open the tail door latch.

The tail door latch assembly also contains a switch which informs the CCU if the tail door is open. A warning lamp on the instrument panel warns if an open door condition is sensed by the CCU. The switch also operates in conjunction with the vehicle alarm system if the tail door is opened when the alarm is armed.