Theft alarm system – circuit operation

THEFT ALARM SYSTEM – 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 5 minutes after ignition has been turned off
5 minutes after disarming the theft alarm
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 (4 times if
out of synch) Press lock button on the handset (4 times if out
of synch) 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).

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 Theft Alarm Unit (Z163). If the Theft Alarm Unit (Z163) does not receive this signal from the handset, the vehicle will remain immobilised.

Vehicle Status Indication

Vehicle status is indicated by up to four devices: 1. Hazard lamps 2. Theft Alarm LED (Contained in the Instrument Cluster (Z142)) 3. Engine Immobilised Warning Lamp (EIWL) (Contained in the Instrument Cluster (Z142)) 4. Alarm Sounder Hazard Lamps When the vehicle arms in either mode, the hazard lamps will flash up to three times when the alarm is armed and one time when disarmed. Theft Alarm LED Slow Flash: Immobilised or immobilised and
armed Rapid Flash: Volumetrically armed

Intermittent Rapid Flash: Perimetrically armed
No Flash for 10 Seconds: Mislock
Continuous: Driver’s door open (or ignition on)
and immobilised NOTE: The Theft Alarm LED may also be used to indicate other conditions. Engine Immobilised Warning Lamp (EIWL) (Not on all vehicles!) Flashing: Immobilised
Continuous: Immobilised (Cirrus Fail) or an
attempt has been made to start the vehicle without the handset attached to the key ring (or handset battery needs to be replaced).