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

CIRCUIT OPERATION

Basic Overview - Central Door Locking

All new Range Rover models feature Central Door Locking. All four doors and the tailgate can be locked and unlocked through operation of the central locking system, which can be operated by: Pressing down, or lifting up, either of the front  door sill buttons. Turning the key clockwise (to lock), or turning the  key anti-clockwise (to unlock), with the key in the drivers door lock. Pressing the “lock” button, or pressing the  “unlock” button, on the remote handset. The new Range Rover is also equipped with a “Superlocking” feature. When the vehicle is “Superlocked”, it is impossible to unlock any of the doors from inside the vehicle by lifting any of the sill buttons.

Basic Overview - Alarm

All new Range Rovers are equipped with a sophisticated integrated security system. The alarm system offers the following forms of protection: Perimetric protection against unauthorised open ing of any of the hinged “slam” panels. Engine crank inhibit against unauthorised engine  crank. Electronic engine immobilisation against unau thorised engine start. Volumetric protection against intrusion into the  passenger compartment.

Basic Overview - Lazy Locking

An additional feature of the new Range Rover’s security system is Lazy Locking. Lazy Locking enables the driver to close any open glass panel (window or sunroof) from outside the car using either the key or the remote handset. Lazy Locking can be carried out either when locking or super locking the vehicle, or when the vehicle is already in a locked state. N.B. Activation of a lazy locking sequence will be dependent on market requirements.

General

The vehicle locking and security system comprises the following components: “C” type latches on the passenger doors incorpo rating central door locking, superlocking and slam locking facilities. An external key barrel on the driver’s door, allow ing central door locking, superlocking and unlocking, with mechanical override via key (excluding superlocking) in the event of a power failure. Separately controlled central door locking  actuators on tailgate and fuel filler flap. Ultrasonic movement detector, located over the  LH “B” post. Passive Immobilisation Coil (Z270) (Not on all  vehicles). Under bonnet mounted alarm klaxon (Not on all  vehicles). Battery Backed Up Alarm Sounder (Z272) (Not  on all vehicles). Radio Frequency remote key allowing locking,  superlocking, unlocking and lazy locking. Inertia switch allowing unlocking in the event of a  crash. Security LED to indicate the “alarm active” state. 

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

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