K 1500 Suburban 4WD V8-5.3L VIN Z Flex Fuel (2003)
Air Bag Deactivation Indicator: Description and Operation
The PASSENGER AIR BAG ON/OFF indicators located on the rear view mirror are used to notify the driver when the passenger presence system (PPS)
has enabled or disabled the I/P inflator module. The PPS air bag indicators will also inform the driver of any PPS malfunctions. When the ignition is
turned on, the PPS module is supplied with ignition 1 voltage and commands both PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. The
PPS module conducts tests on the PPS components and circuits while both ON/OFF indicators are ON. If no malfunctions are detected the PPS module
will turn the PASSENGER AIR BAG indicator ON or OFF depending on the status of the PPS. If a malfunction is detected, the PPS module will store a
diagnostic trouble code (DTC), default the PPS to the OFF state and communicate with the SDM that a DTC has been set. When the SDM detects that
the PPS has set a DTC, the SDM will set either DTC B0092 or B0098 and request the instrument panel cluster (IPC) to turn the AIR BAG indicator
located on the IPC ON. This is done to notify the driver of any PPS malfunctions. 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.
