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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Air Bag Restraint Systems) >> Diagnostics >> Sir Diagnostic System Check >> 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.

Ignition switch supplies ignition voltage to Sensing and Diagnostic Module (SDM) to SDM connector terminal A10 (Yellow wire) from AIR BAG fuse in instrument panel fuse block, located on right side of center console. AIR BAG warning light will flash 7 times while SDM checks SIR system for malfunctions. If no malfunctions are detected, AIR BAG warning light will go off.

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