1999 LAND ROVER DEFENDER door lock

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DESCRIPTION AND OPERATION 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 bonnet 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.
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ELECTRICAL
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DESCRIPTION AND OPERATION 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.
ANTI-THEFT ALARM SYSTEM SELF TEST
The anti-theft alarm ECU has a self test feature which allows all alarm inputs to be tested. To enter self test mode
the following steps must be completed as follows:
1.Ensure that the driver’s door is closed and the driver’s window is open
2.Open the bonnet and with assistance depress and hold the bonnet switch
3.Release the bonnet switch and within 0.5 seconds turn the ignition switch on to position II
4.Quickly open the driver’s door
5.Turn the ignition switch to the off position
6.Turn the ignition switch back to position II
7.If the self test mode has been entered successfully, confirmation will be given by the alarm sounder. If the
ECU has not entered self test mode, repeat the above procedure.
Once in self test mode, the following test inputs will cause the security LED to illuminate and the engine
immobilised warning lamp and the hazard warning lamps to flash. When an input is operated, non illumination of
the security LED, the engine immobilised warning lamp and the hazard warning lamps indicates a fault for that
input.
Perform the following steps to test each input for correct operation:
Close and open the drivers door
Open and close each of the passenger doors and the tail door in turn
Close and open the bonnet (depress switch if bonnet still open)
With drivers door closed, lock and unlock the driver’s door using the vehicle key if spare key available. If spare
key is not available, operate driver’s sill button through open window
Press the unlock button of the remote handset. This enters the volumetric self test mode and all other inputs
will be disabled. Make a movement inside the vehicle. When the volumetric sensor is triggered the security
LED will flash.
To exit the self test mode, turn the ignition switch to the off position.
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ELECTRICAL
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DESCRIPTION AND OPERATION UNDER SEAT FUSE BOX
FROM 02MY
1.A/C Relay (if fitted)
2.A/C relay (if fitted)
3.Glow plug relay
4.Main relay
5.Fuel pump relay
6.ABS Return pump relay
7.Fuse 7 - Central Door Locking (CDL) and BBUS
(20A)
8.Fuse 6 - Anti-theft alarm ECU (15A)
9.Fuse 5 - Main relay (30A)10.Fuse 4 - Fuel pump relay (20A)
11.Fuse 3 - Horn/HRW relay (20A)
12.Fuse 2 - Accessory socket (20A)
13.Fuse 1 - ABS ECU (30A)
14.Fusible link 6 - Lights (30A)
15.Fusible link 5 - Ignition switch/Starter relay (60A)
16.Fusible link 4 - ABS Pump relay (30A)
17.Fusible link 3 - Window lift/Seat heat relay (60A)
18.Fusible link 2 - Air conditioning (60A)
19.Fusible link 1 - Glow plugs/Heated front screen
(100A)
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86ELECTRICAL
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REPAIR SWITCH - FASCIA - FROM 02MY
Service repair no - 86.25.18
Remove
1.Remove radio.See this Section.
2.Release switch, disconnect multiplug and
remove switch.
Refit
3.Connect multiplug to switch and fit switch to
panel.
4.Fit radio.See this Section.HARNESS - FRONT DOOR - FROM 02MY
Service repair no - 86.25.20
Remove
1.Remove door lock solenoid.See this Section.
2.Carefully peel back section of plastic sheet for
access to harness.
3.Release clips securing harness to panel.
4.Disconnect multiplug from motor.
5.Release harness sleeve and withdraw harness
from door.
6.Release harness sleeve and withdraw harness
multiplugs from’A’post.
7.Disconnect 2 multiplugs and remove harness.
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REPAIR Refit
8.Position harness and connect multiplugs.
9.Feed multiplugs into’A’post and secure harness
sleeve.
10.Connect multiplug to motor.
11.Secure harness clips and sleeve.
12.Secure plastic sheet.
13.Fit door lock solenoid.See this Section.SOLENOID/MOTOR - TAIL DOOR - FROM 02MY
Service repair no - 86.26.02
Remove
1.Remove tail door trim casing.See CHASSIS
AND BODY, Repair.
2.Disconnect multiplug from solenoid.
3.Remove bolt and screw securing solenoid to
door.
4.Release clip securing harness to solenoid
mounting bracket.
5.Remove solenoid assembly from operating rod.
6.Remove 2 screws securing solenoid to mounting
bracket.
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86ELECTRICAL
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REPAIR Refit
7.Fit solenoid to mounting bracket and secure with
screws.
8.Connect operating rod to solenoid assembly.
9.Fit solenoid to door, fit screw and tighten bolt to
6 Nm (4 lbf.ft).
10.Position harness to solenoid mounting bracket
and secure with clip.
11.Connect multiplug to solenoid.
12.Fit tail door trim casing.See CHASSIS AND
BODY, Repair.SOLENOID/MOTOR - FRONT DOOR - FROM 02MY
Service repair no - 86.26.08
Remove
1.Remove door trim casing.See CHASSIS AND
BODY, Repair.
2.Carefully peel back plastic sheet to expose
mechanism.
3.Release clip, detach and remove lock solenoid
link.
4.Loosen 2 screws securing solenoid, release
solenoid from mounting panel, disconnect
multiplug and remove solenoid.
Refit
5.Connect multiplug to solenoid, locate solenoid to
mounting panel and tighten screws.
6.Fit and secure link.
7.Secure plastic sheet.
8.Fit door trim casing.See CHASSIS AND
BODY, Repair.
9.Adjust door lock solenoid.See Adjustment.
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ELECTRICAL
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REPAIR SOLENOID/MOTOR - REAR DOOR - FROM 02MY
Service repair no - 86.26.09
Remove
1.Remove plastic sheet.See CHASSIS AND
BODY, Repair.
2.Release clip, detach and remove lock solenoid
link.
3.Release clip and disconnect interior handle link
from latch mechanism.
4.Remove 3 bolts securing mounting panel.
5.Loosen remaining bolts and nut, ease mounting
panel away from door and retain in this position
for access.
6.Disconnect multiplug from solenoid.
7.Remove 2 screws securing solenoid.
8.Remove centre pin from bellcrank pivot and
release pivot from mounting panel.
9.Release bellcrank from sill button link and
remove from lock solenoid link.
10.Remove door lock solenoid.
11.Remove link from solenoid.
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