Warning lamp, AIRBAG

Warning Lamp, AIRBAG












The airbag warning lamp is situated on the right-hand side of the main instrument unit. The lamp warns the driver in the event of a fault in the airbag system. A second lamp consists of the central warning lamp, which goes out only when all the warning inputs are normal.

The airbag lamp is supplied with +15 current in the main instrument unit and grounded by the airbag control module via pin 1 (K20) of the main instrument unit.

If a fault should occur in the system, the airbag lamp and central warning lamp will light up continuously and, at engine speeds above 300 rpm, the MIU will send a request to the SID for activation of an acoustic signal.

If the airbag system has been activated - sent firing current to the explosive charges in the gas generators - the airbag and central warning lamps will light up continuously.

The airbag control module lights the lamp when the ignition is turned on. If there are no faults, the lamp will go out after 3 seconds.

Diagnostics
An open Circuit/short circuit sets a diagnostic trouble code in the AIRBAG control module.