When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode, the SDM will establish communication with the passenger presence system (PPS). The PPS will respond by commanding both the PASSENGER AIR BAG ON/OFF indicators located in the rearview mirror ON for 5 seconds. The SDM will transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM and the SDM will compare the ID received to data stored in memory. The SDM will also set DTC B0092 to notify the driver that the PPS has a current malfunction present. When the SDM detects that the PPS has set any one of the following DTC 023, 024, 063, 064, or 065, the SDM will disable the instrument panel (I/P) module deployment loop, set DTC B0092, and command the AIR BAG indicator ON.

Ignition 1 voltage is within the normal operating voltage range.

Important: DTC B0092 will also set, if the PPS has a current malfunction, and has set any one of the following DTCs 023, 024, 064, or 065. The SDM will set DTC B0092 as current and command the AIR BAG indictor ON. This is done to notify the driver of any PPS malfunctions. When DTC B0092 is present, it is important to check the PPS for any current DTC. Refer to Passenger Presence System Flash Code Procedures . Any current PPS DTC must be diagnosed before performing this diagnostic procedure.

DTC B0092 is an indication that the SDM has received an incorrect PPS verification ID or has lost communication with the PPS. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the correct verification ID from the PPS within 5 seconds, the SDM will set the DTC as current, illuminate the AIR BAG indicator, and disable the I/P module deployment loop.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. With the scan tool, check for PPS DTC. Refer to Passenger Presence System Flash Code Procedures .

⇒	Diagnose all PPS DTCs. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

2. Inspect the PPS and passenger seat inline connector for corrosion or damage.

⇒	If any of the above conditions are found, make the appropriate repair.

3. Test the voltage circuits for the PPS for a short to ground or open/high resistance.

⇒	If any of the above conditions are found, make the appropriate repair.

4. Test the I/P module disable signal circuit for a short to ground or open/high resistance.

⇒	If any of the above conditions are found, make the appropriate repair.

5. Reconnect all components, with ignition ON use the scan tool to clear DTC. Recheck for DTC. When all PPS faults have been repaired, rezero the PPS. Refer to repair instructions.
6. Verify that DTC B0092 does not set as a current DTC. If DTC B0092 does set as a current DTC, replace and rezero the PPS. Refer to repair instructions.

⇒	After replacement and the rezeroing of the PPS are completed, perform the repair verification. Refer to repair instructions.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.