Theft alarm system – circuit operation

THEFT ALARM SYSTEM – CIRCUIT OPERATION

BUILT IN TEST PROCEDURE

The handset should be detached from the key ring to allow perimetric testing. The system will automatically switch to volumetric testing if the handset is in close proximity to the Ignition Switch (X134). The built in test procedure is accessed as follows: 1. Starting conditions: ignition off, doors unlocked, alarm disarmed, bonnet switch depressed. 2. Carry out instructions 3 to 7 within 5 seconds. 3. Release bonnet switch. 4. Switch ignition on. 5. Open driver’s door. 6. Switch ignition off. 7. Switch ignition on. If alarm is correctly accessed, the alarm sounder will sound. The following checks can then be made:

Perimetric Testing

1. Open and close driver’s door or tailgate - Theft Alarm LED and Hazard lamps will flash. 2. Depress bonnet switch - Theft Alarm LED and Hazard lamps will flash. 3. Pull the driver’s door sill button up - Theft alarm LED and Hazard lamps will flash. 4. Turn driver’s door key lock cylinder - Theft Alarm LED and Hazard lamps will flash.

Volumetric Testing

1. Press the unlock button on the handset or move the handset close to the Ignition Switch (X134) to disable perimetric testing and enable volumetric testing. 2. Any movement within the vehicle will be detected by the Alarm Sensor (X213) and indicated by flashing the Theft Alarm LED and hazard lamps. 3. Turn off ignition to end test procedure.

HANDSET INITIALISATION

The Theft Alarm Unit (Z163) must be programmed whenever handsets are replaced. The serial communications line is used to activate the “learn mode” of the Theft Alarm Unit (Z163). Then the handset(s) to be initialised must be made to transmit their coded data to the Theft Alarm Unit (Z163). NOTE: All handset(s) must be programmed during the same learn mode period. It is not possible to simply add a handset to the Theft Alarm Unit (Z163) which has been programmed to other handsets.

When the “learn mode” of the Theft Alarm Unit (Z163) has been accessed, handsets can be programmed using the following procedure: 1. Starting conditions: Theft Alarm disarmed and vehicle mobilised. 2. Press the handset’s Unlock button a minimum of 8 times. 3. If the handset has been correctly programmed, the horn will briefly sound and the hazard lamps will flash once. 4. The next handset, up to a maximum of 4, can now be programmed using the same procedure. NOTE: It is very important that each handset be programmed separately. If the Theft Alarm Unit (Z163) receives key presses from two handsets, then neither handset will be programmed. The “learn mode” is terminated using the serial communications line. If the Theft Alarm Unit (Z163) would not accept reprogramming, the original handset(s) will still function.