Security/central locking – circuit operation

SECURITY/CENTRAL LOCKING – CIRCUIT OPERATION

Engine Immobilisation (Diesel)

The electronic engine immobilisation feature fitted to the diesel engine derivatives is different to the system fitted to the petrol versions. The engine immobilisation output will be low if the alarm is set. If a crank signal is detected with the alarm set (armed), the “Engine Immobilised” message sequence will be transmitted to the instrument pack.

Alarm Triggering

The perimetric alarm will be triggered by any of the doors opening, the tailgate opening, the bonnet opening, the ignition key being inserted, the ignition being turned on, or the inertia switch being tripped. The volumetric alarm will be triggered by any movement within the passenger compartment. The alarm will be triggered a maximum of three times during any set/unset period. Any further triggers after this will be ignored.

Audible/Visual Warnings

A disc horn, mounted under bonnet, is used as the alarm sounder. The output from the sounder is either pulsed or a continuous tone, depending on market legislation. If the output is pulsed, then its status will be synchronised with that of the visual indicators. The lamps used for external visual indication are dependent upon market legislation, but will be either Hazards, or Side and Tail, or Dip and Tail.