The following AIR BAG warning light conditions indicate possible SIR system faults:
z
Light does not illuminate at all.
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Light remains illuminated when ignition is turned on.
z
Light illuminates while vehicle is driven.
SIR system faults are usually due to a disconnected/loose electrical connector caused by previous service on
vehicle. Always check all Yellow SIR connectors for loose connections or damage.
If all connectors are okay, and AIR BAG warning light is still not operating properly, diagnose SIR system.
Repair air bag system as necessary.
H2 WITH PASSENGER PRESENCE SYSTEM
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 instrument panel 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.
SERVICE PRECAUTIONS
Observe the following service precautions when working with air bag systems:
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Disable appropriate air bag system zone or zones before servicing any air bag system or steering column
component. Failure to do this may result in accidental air bag deployment and possible personal injury.
NOTE:
When the following conditions apply:
z
Air Bag lamp is on.
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Passenger Air Bag indicator always reads off.
z
DTC B0092 is reported.
The cause of this condition may be a shorted Passenger Presence System
(PPS) sensor wire. The PPS sensor harness is located under the front
passenger seat. This harness may be pinched between the seat frame and the
track/riser.
2004 Hummer H2
GENERAL INFORMATION Air Bag Deactivation Procedures - Hummer