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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Air Bag Restraint Systems) >> Diagnostics >> Sir Diagnostic System Check >> Circuit Description

Circuit Description

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

Ignition switch supplies ignition voltage to Sensing and Diagnostic Module (SDM) connector terminal A10 via SDM fuse, located in right side of instrument panel. When ignition is turned on, SDM responds by performing tests on SIR system while Instrument Panel Cluster (IPC) flashes AIR BAG warning light 7 times. If system is okay, AIR BAG warning light will then turn off.

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