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LED, anti-theft alarm

LED, anti-theft alarm





General

As a check for the theft alarm, an LED is mounted in the centre of the dashboard. The LED flashes at varying frequencies or lights continuously depending on the different conditions. The table on the next page shows some normal cases.

Function

The LED is supplied via +30 from fuse 25 (22a) and grounded via pin 27 on the TWICE control module. TWICE controls the grounding and hence activation of the LED and its flash frequency.

Self-diagnosis

Whenever the alarm is armed, a self-diagnosis is carried out during the delay time (10 seconds) while the LED is lit continuously. If a fault is found, a diagnostic trouble code (DTC) is stored in the control module and the LED does not flash. The other functions of the alarm are not affected.




Function

LED (Light Emitting Diode)

Time

Flash frequency

Arming

Lit continuously

10 sec (delay period)



Alarm, armed

Flashes

-

1 flash/3 sec

Door, tailgate or bonnet open when arming takes place.

Flashes

10 secs

1 flash/sec

Door, tailgate or bonnet open during delay period.

Lit continuously - flashes

10 secs

1 flash/sec

Door, tailgate or bonnet closed during delay period.

Flashes - lit continuously

10 secs



Tailgate closed after delay period.

Flashes - lit continuously

10 secs



Tailgate opened after delay period.

Flashes





Self-arming, theft alarm

Flashes

10 secs



Immobilization

Flashes



Double flash/3 sec

Disarmed alarm

Lit continuously

2 secs