Defender. Manual - part 266

Handles, Locks, Latches and Entry Systems - Handles, Locks, Latches and

Entry Systems

Description and Operation

CENTRAL DOOR LOCKING (CDL) FROM 2002 MY

The Central Door Locking (CDL) system is a new feature for 2002MY Defender.

• NOTE: CDL operates all doors on Station Wagon and County Station Wagons. On all other Defender 2002MY variants,

CDL operates on the driver and front and rear passenger doors only.

CDL operates on all doors, including the tail door and is operated by pressing the appropriate button on the remote

handset, using the vehicle key in the drivers door lock or using the drivers door sill button.

The CDL system introduces electrically operated door latches which are controlled by the anti-theft alarm ECU, located

behind the instrument pack. The anti-theft ECU receives a permanent power supply from fuse 6 in the passenger

compartment fuse box. Each CDL latch motor is connected by two wires to the anti-theft ECU which alternately supplies

power and earth connections to drive each motor to the lock or unlock positions.

If the latch motors are continually operated in a short period of time, the anti-theft ECU will suspend all CDL latch motor

operation for 15 seconds to prevent the motors from overheating. Before suspension occurs the anti-theft ECU ensures

that all the doors are left in the unlocked condition.

If the vehicle is locked, and the key is in the ignition switch or the ignition is on and the anti-theft alarm ECU inertia

switch is tripped, all doors will be unlocked immediately and the hazard warning lamps will operate. To prevent

accidental relocking, all latch motors will be inhibited until the anti-theft ECU senses that the drivers door is opened with

the key removed from the ignition switch.

Locking of the vehicle using the remote handset is inhibited with the key in the ignition switch.

Slam Locking

With the introduction of CDL, slam locking of the drivers door is disabled. If an attempt is made to slam lock the

vehicle, the anti-theft alarm ECU will unlock all doors.

CDL Using the Drivers Door Sill Button

Each door has a sill button to allow that door to be individually locked from inside the vehicle. The drivers door sill

button has additional functionality which allows all doors to be locked from inside the vehicle from this one button.

When the driver door sill lock button is depressed, the CDL system enters a sill locked state, where all doors are locked

but immobilisation and perimetric and volumetric sensing is suspended. CDL using the drivers sill lock button can be

achieved with or without the key in the ignition switch and without the ignition being on.

If the CDL is in the sill locked state and the lock button on the remote handset is pressed, the volumetric and perimetric

functions of the alarm system will become active and active engine immobilisation will be invoked.

CDL Using the Key

The driver and the passenger front doors are fitted with key barrel locks. Using the vehicle key in the passenger door

will only lock or unlock that door. Using the key in the drivers door will operate the CDL system and lock or unlock all

doors.

• NOTE: The passenger door key barrel is connected to the door latch and has no electrical input to the anti-theft alarm

ECU. The driver door key barrel is also connected to the door latch and its operation is monitored by the ECU only via

the latch motor and the two wires connected to it.

When the vehicle is locked using the key in the drivers door, only CDL and perimetric protection is invoked. Volumetric

protection and active immobilisation is not initiated.

CDL Using the Remote Handset

The remote handset has two buttons; lock and unlock. A single press on the lock button will lock all doors and invoke

perimetric and volumetric protection and active immobilisation. Remote locking is inhibited if the transponder coil senses

that the key is in the ignition switch.

When the vehicle is locked, a single press of the unlock button will unlock all doors and disable perimetric and

volumetric protection. Immobilisation is only disabled using the transponder coil and the remote handset or the EKA

procedure.

Security LED

In addition to the alarm system status indications, the security LED also displays CDL system status.

The system confirms that the drivers door is open by illuminating the LED for the 10 second confirmation period. If any

other door or the hood is open, the LED remains unlit for the 10 second confirmation period. After the 10 second

confirmation period the LED reverts to the slow flash deterrent mode if the alarm is armed.

Interior Lamp Functionality

The anti-theft alarm ECU controls the interior lamp functionality. When the lamps are extinguished, they fade out to the

off condition over a 2 second period.

The lamps are turned on by:

Disarming the alarm using the remote handset

Opening any door.

When the lamps are on, they will be extinguished by the following actions:

If all doors are closed, the lamps will be extinguished after a 15 second delay period.

If any door is left open, the lamps will be extinguished after an 8 minute delay period.

If one of the above delay periods is active and the ignition is switched on or the alarm is armed, the lamps will

be extinguished.

Handles, Locks, Latches and Entry Systems - Latch Cable Adjustment

General Procedures

1. Remove door trim panel.

For additional information, refer to:

Front Door Trim Panel

(501-05 Interior Trim and Ornamentation, Removal and

Installation).

2. Carefully peel back plastic sheet to expose mechanism.

3. Release clip and detach solenoid link from latch.

4. Ensure sill button is fully raised.
5. Fully extend solenoid actuator then lower 3.5 mm ± 1.00

mm.

6. Whilst holding actuator in this position, adjust length of link,

until link pin is aligned with hole in latch lever.

7. Connect link and secure with clip.

8. Secure plastic sheet.
9. Instal door trim panel.

For additional information, refer to:

Front Door Trim Panel

(501-05 Interior Trim and Ornamentation, Removal and

Installation).