Circuit Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. 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.