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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B0091: Air Bag Disable Switch Wrong State >> Circuit Description

Circuit Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 GMC C3500 HD, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

When ignition is turned on, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. SDM monitors voltage levels at passenger-side air bag module disable switch signal and passenger-side air bag module suppression indicator control circuits to determine position of air bag disable switch. If malfunction is detected, DTC will set.

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