Alarm

Alarm

Autodiagnosis

When switched on the system carries out an autodiagnosis which can be recognized by the LED flashing at 4 Hz and if there is a problem or fault in the system, the LED will signal it in accordance with the methods described in table 1.

Table 1. Autodiagnosis display

If a fault is detected for the volumetric sensors, then the appropriate sensor is excluded from the surveillance and an audible warning signal (beep) is emitted a second after switching on.

When it is switched off, the system indicates, via the flashing of the LED, which sensor has set off the alarm during the surveillance (see table 2).

Table 2. Signalling cause of alarm

The blink codes are given in order.
These codes have an interval of 1.5 seconds between them.

Manual diagnosis

It is also possible to carry out a MANUAL DIAGNOSIS by opening the lid and turning the ignition key from the ON position to the OFF position; the lid protective button must be pressed within 15 seconds 7 times in rapid succession in less than 10 seconds; 5 beeps will signal the start of the manual diagnosis procedure. After 10 seconds the LED or the direction indicators will flash once.

By entering into this mode the autodiagnostic procedure for the volumetric sensors connected to the control unit will automatically be activated.

If the test does not indicate irregularities, then the direction indicators will flash 3 times and there will be 3 beeps of the alarm.

After this first stage, each time the state of the switches is altered there will be a corresponding quick flash of the direction indicators and a beep, accompanied by the LED in the centre console flashing. If the key is turned to the ON position, the alarm will sound briefly (500 msecs) and the direction indicators will flash (2.5 secs).

This last operation indicates the exit from manual diagnosis procedure. It is also possible to leave the MANUAL DIAGNOSIS by not carrying out any actions for 30 seconds: the exit is signalled by the direction indicators coming on for around 2.5 secs and a beep.