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Circuit Description

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. 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 A1 via SIR fuse, located under rear seat cushion. Ignition switch also supplies voltage to Instrument Panel Cluster (IPC). When ignition is turned on, SDM responds by performing tests on SIR system while commanding Instrument Panel Cluster (IPC) to flash AIR BAG warning light 7 times. If no malfunctions are found in SIR system, AIR BAG warning light will turn off.

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