Airbag System Failure Warning Light; Passenger Airbag Deactivated Warning Light; Seat Belt Reminder - Alfa Romeo 159 Training Material

ELECTRICAL
SYSTEM

9.7.7 Airbag system failure warning light

With TEG inserted, the airbag system failure warning light (red) will light up for approximately four seconds (initial
self-diagnostic procedure) and then goes out. The corresponding failure code is stored if the ECU detects a failure. If
no failures are detected at key-on and no failure events are stored, the warning light will go out after the four-second
diagnostic procedure. Otherwise, it will stay on.
The warning light will stay on or light up while the vehicle is running when:
the ECU detects an airbag system failure
the ECU detects a collision and the system is deployed
an failure in the warning light connection circuit occurs.
The warning light will stay on until the operative conditions of the system are restored (i.e. the concerned component
is replaced and the ECU is reset using Examiner) following a collision that deployed only the pretensioners or side
airbags. If the collision deployed the front airbag modules, the warning light will remain on permanently. The ECU
cannot be reset (it must be replaced). The warning light will come on fixed if during the ECU's life internal errors that
cannot be reset using Examiner occur.

9.7.8 Passenger airbag deactivated warning light

With TEG inserted, the passenger airbag deactivated warning light (amber) will light up for approximately four
seconds (initial self-diagnostic procedure) and then blink for the next four seconds. If the ECU detects a warning light
failure, it will store the failure code, switch the failure warning light on and deactivate the passenger side airbag.
Proceed with Examiner as for the failure warning light to restore system operation.
NOTE: The TEG MUST NOT BE INSERTED IN THE TEG READER to deactivate the passenger airbag module: this
would store an error in the ECU.

9.7.9 Seat belt reminder

First warning cycle : warning light
The seat belt warning light comes on to indicate that a seat belt (driver, front passenger, rear passengers) has not
been fastened as follows:
steady light at key on if the seat belt is not fastened
steady light if seat belt is unfastened after key-on (unless blinking conditions subsist, see below)
off if the seat belt was fastened before key-on
off if the seat belt is fastened during key-on
always off at key-off.
NOTE: The steady light indication cannot be switched off.
Warning cycle: warning light and buzzer
The warning cycle is activated for 90 seconds if with seat belt unfastened at key-on, at least of the following events
occurs:
over 30 seconds have elapsed and vehicle speed is higher than 4 km/h
vehicle speed higher than 25 km/h
distance exceeding 500 m.
During the warning cycle, the warning light will blink (frequency 2Hz D.C. 50%) in combination with a buzzer tone.
Operation during the 90 second cycle
The warning cycle will stop immediately (the warning light will go out and the buzzer will be muted) if
the seat belt is fastened. The system will set up for the next warning.
The cycle will continue for the entire 90 seconds if one of the three events which caused the warning
cycle come less.
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