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Old 02-12-2008, 02:45 PM   #6
mechanic_101
Registered User
 
Join Date: Aug 2007
Location: Bay City
Posts: 722
My Ride: 2005 325I
Always disconnect the battery when working around airbag. New vehicles, they likely have 2 stage airbag system which is the airbag deployed twice to reduce the force of the first deployment. Locate the airbag module and check the resistance between the connectors at the module to the steering wheel connector. Check for any signs of any corrosion. Check the stage 1 and 2 micro connectors at the airbag. You can rent a load tool and plug into the connector at the steering wheel. If the airbag light turns off, then you have a bad airbag. If remains on, then something is wrong with your wiring from the module to the bag. Again, make sure battery is disconnected when working around airbag.

Note: a load tool is used to simulate the airbag for preventing inadvertent deployment.
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