Guard Alarm II System

NOTE: It can often be difficult to establish which of the loops has caused the false alarm, since many faults are intermittent.


Carry out a test of the 10 most recent alarms with the aid of the test box. Refer to Programming and Testing fo the Control Module. Test of the Ten Most Recent Alarm Causes

(Step F1) Disconnect the alarm loops




- Ignition off.
- Disconnect the alarm control module item (C/F).




- Check that all pins are in the correct position
- Disconnect all alarm loops except the ignition (15).
Do so by loosening the leads at the distribution box and insulate them with tape or fit insulators.

- The door contacts:
Black/white lead at item T.

- The hood loop:
Brown/white lead at item FH.

- The trunk loop:
Blue/brown lead at item RH.





Disconnect the black 4-pole connector to the sensor.
(Step F2) See if false alarm reoccurs




- Ignition off.
- Reconnect the control module (item C/F).




- Close all doors, the hood and the trunk.




- Activate the Guard Alarm II System.

If the false alarm reoccurs:
The false alarm is the fault of the lead from the ignition feed, i.e. there is an intermittent 12 V short to item 15, e.g. through chafed leads, damp or dirty contact surfaces in the connectors of the ignition lock.

If the false alarm ceases:
- Connect one loop at a time until the faulty loop is revealed (the false alarm reoccurs).
The most frequent cause of the fault is intermittent shorting to ground, e.g. through chafed leads, damp or dirty contact surfaces in the connectors.
- Rectify the fault or replace the lead.