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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1289 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0081 (Two Mode Hybrid) >> Circuit/System Description (Two Mode Hybrid)

Circuit/System Description (Two Mode Hybrid)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition is turned ON, the passenger presence system (PPS) and the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions. When the SDM has completed the power-up mode, the SDM will establish communication with the PPS. The SDM will also request the instrument panel cluster (IPC) to illuminate both of the PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. If the SDM determines the correct PPS is installed and functioning normally, the SDM will illuminate the passenger side airbags ON or OFF based on messages from the PPS. The SDM will also send a message to the IPC to illuminate the appropriate PASSENGER AIR BAG ON/OFF indicator.

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