Circuit/System Description

The PASSENGER AIR BAG ON/OFF indicators are used to notify the driver when the sensing and diagnostic module (SDM) has enabled or disabled the instrument panel (I/P) inflator module. When the ignition is turned ON, the SDM will communicate with the instrument panel cluster (IPC) to command both Passenger Air Bag ON/OFF indicators ON for 5 seconds. The SDM conducts tests on the inflatable restraint I/P module disable switch circuits while both PASSENGER AIR BAG ON/OFF indicators are ON. If no malfunctions are detected, the SDM will turn the PASSENGER AIR BAG indicator ON or OFF, depending on the status of the inflatable restraint I/P module disable switch. If a malfunction is detected, the SDM will store a DTC, default the Passenger Air Bag ON/OFF indicator to the OFF state. The SDM will request the instrument panel cluster (IPC) to turn the AIR BAG indicator ON to notify the driver of a malfunction.