Warning Lamp, AIRBAG

Warning Lamp, AIRBAG








The air bag warning lamp is located in the left-hand section of the main instrument unit, by the tachometer.


A fault in the system is indicated by the airbag warning light coming on permanently.


When functioning normally, the Airbag control module (ACM) sends a bus message to switch off the airbag warning lamp. If this message is not present the MIU will switch on the lamp. In certain circumstances the ACM can also transmit an illumination command on the bus in order to switch on the lamp as quickly as possible.


At engine speeds exceeding 300 rpm the MIU sends a message to the SID control module requesting an acoustic signal.

When the ignition key is turned to the start or drive position, the airbag warning lamp comes on for 3-4 seconds before then going out if no trouble codes are stored.


If there are trouble codes stored, the lamp will light for 3-4 seconds, then go out for half a second, and then come on permanently until the ignition is turned off or the trouble code is cleared.


If an airbag or belt tensioner has tripped, the airbag warning light is lit constantly.


Diagnosis


The function has no diagnostics.