Workshop Manuals Factory service & repair Land Rover
01 Introduction02 Key information03 Sequential multiport fuel injection (SFI-V8)04 Diesel05 Starting and charging06 Cruise control07 Transfer gearbox08 Automatic gearbox09 Ignition and shift interlock10 Anti-lock brake system11 Data link connector12 Instruments13 Warnings and indicators14 Horns15 Radio16 Navigation system17 Wash/wipe18 Heated front screen19 Heated rear screen20 Electrochromatic rear view mirror21 Headlamps22 Side lamps23 Stop lamps24 Direction indicator lamps25 Reversing lamps26 Fog guard lamps27 Interior lamps28 Cigar lighter/clock/accessory socket29 Heating and ventilation (without A/C)30 Heating and ventilation (WITH A/C)31 Power windows32 Sunroof33 Power seats34 Power mirrors35 Memory seats36 Heated seats37 Memory mirrors38 Supplementary restraint system (SRS)39 Trailer auxiliary socket40 Air suspension41 Security/central locking42 Power distribution43 Fuse details44 Ground distribution45 Component location table46 Component location views47 Connector views48 Harness routing49 Ground50 Index
Land Rover Range Rover P38 Electrical Troubleshooting Manual (1999 on)41 · Security/central locking
41 · General

Security/central locking – circuit operation

Make
Land Rover
Model
Range Rover P38 Electrical Troubleshooting Manual
Year
1999 on
Section
Circuit operation › Security/central locking – circuit operation
Security/central lockingSecurity/central locking – circuit operation

SECURITY/CENTRAL LOCKING – CIRCUIT OPERATION

Passive Immobilisation

The following conditions will passively immobilise the vehicle:  30 seconds after ignition has been turned off and the driver’s door has been opened.  30 seconds after ignition has been turned off, the key removed, and the driver’s door has been opened.  10 minutes after ignition has been turned off and the key removed (without opening the driver’s door).  The handset becomes desynchronised (or with an improperly functioning handset). The vehicle can be mobilised by any of the following methods:  Turn the ignition on (The handset must be functioning properly and within close proximity to the key!)  Press unlock button on the handset  Enter EKA code NOTE: The vehicle will remain immobilised by attempting to turn the ignition on with the handset detached from the key ring (or with an improperly functioning handset). If the handset becomes desynchronised (or is functioning improperly), the engine will be passively immobilised. If an attempt is made to start the engine, the message “Engine Disabled, Press Remote” will be displayed on the message centre. To mobilise the engine the EKA code must be entered and the handset (when functioning properly) resynchronised.

Passive Immobilisation Coil (Z270)

A magnetic field is generated by the passive Immobilisation Coil (Z270) contained in the steering column. This field excites a receiving coil in the handset causing it to transmit a mobilisation signal to the BeCM. If the BeCM does not receive this signal from the handset, the vehicle will remain immobilised.

Handset Transmitter Resynchronisation

The Theft Alarm Unit (Z163) will remain synchronised with the handset unless:  The handset’s batteries have been removed.  The vehicle’s battery has been disconnected.

NOTE: All handsets must be resynchronised when the vehicle’s battery has been disconnected. A handset may be resynchronised by performing a key lock, or unlock, on either front door within 30 seconds of performing a remote lock, superlock, or unlock function. The BeCM uses the change of state of the CDL Switch to initiate resynchronisation.

Emergency Key Access (EKA)

EKA is used to disarm the theft alarm and mobilise the vehicle in the event of a handset failure. This is possible through a series of locks and unlocks with the key in the driver’s door lock cylinder. With the vehicle locked and the alarm armed, turn the key the required number of times according to the following sequence: 1. To enter the first digit, turn the key the required number of times to the unlock position. 2. To enter the second digit, turn the key the required number of times to the lock position. 3. To enter the third digit, turn the key the required number of times to the unlock position. 4. To enter the fourth digit, turn the key the required number of times to the lock position. 5. Turn the key to the unlock position to unlock the doors, disarm the alarm, and mobilise the vehicle. NOTE: The key must be fully turned to the rest and lock/unlock position each time. After 5 wrong attempts, you must wait 10 minutes.

Parts & tools for this job For 1999 Land Rover Range Rover

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