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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC B0041: Driver Head Impact Air Bag Deployment Loop Open >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

When ignition is turned on, SDM performs tests to diagnose critical internal malfunctions. SDM monitors driver head impact air bag high-side and low-side circuit voltage difference. SDM uses voltage difference to calculate circuit resistance. High resistance indicates an open in deployment loop.

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