S15/T15 Sonoma P/U 2WD L4-2.2L VIN 5 Flex Fuel (2001)
Malfunction Lamp / Indicator: Description and Operation
AIR BAG INDICATOR
The AIR BAG indicator, located in the IPC is used to notify the driver of SIR system malfunctions and to verify that the SDM is communicating with the
IPC. When the ignition is turned ON, the SDM is supplied with ignition 1 voltage and the IPC flashes the AIR BAG indicator seven times. While
flashing the indicator, the SDM conducts test on all SIR system components and circuits. If no malfunctions are detected the SDM will communicate
with the IPC through the class 2 serial data circuit and request the IPC to turn the AIR BAG indicator OFF. The SDM provides continuous monitoring of
the air bag circuits by conducting a sequence of checks. If a malfunction is detected the SDM will store a Diagnostic Trouble Code (DTC) and request
the IPC to turn the AIR BAG indicator ON. The presence of a SIR system malfunction could result in non-deployment of the air bags. The AIR BAG
indicator will remain ON until the malfunction has been repaired.
