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 Wash/wipe17 Heated front screen18 Heated rear screen19 Electrochromic rear view mirror20 Headlamps21 Side lamps22 Stop lamps23 Direction indicator lamps24 Reversing lamps25 Fog guard lamps26 Interior lamps27 Cigar lighter/clock28 Heating and ventilation (without A/C)29 Heating and ventilation (WITH A/C)30 Power windows31 Sunroof32 Power seats33 Power mirrors34 Memory seats35 Heated seats36 Memory mirrors37 Trailer auxiliary socket38 Air suspension39 Security/central locking40 Power distribution41 Fuse details42 Ground distribution43 Component location table44 Component location views45 Connector views46 Harness routing
Land Rover Range Rover P38 Electrical Troubleshooting Manual (1997-1999)39 · Security/central locking
39 · General

Security/central locking – circuit operation

Make
Land Rover
Model
Range Rover P38 Electrical Troubleshooting Manual
Year
1997–1999
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 “un lock” 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 actua tors 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 1997 Land Rover Range Rover

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