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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 44 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Sir Diagnostic System Check >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

Ignition switch supplies ignition positive voltage to SDM at terminal A1 via AIR BAG fuse. When ignition is turned on, SDM tests SIR system for malfunctions while flashing AIR BAG warning light 7 times. If no malfunctions exist, AIR BAG warning light will then turn off.

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