Component Tests and General Diagnostics

Passenger Presence System Displaying Code Procedure (Base)

Description

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) will establish communication with the passenger presence system (PPS). When communication is established, the SDM will first request traceability/verification information from the PPS module. If the SDM confirms that the correct PPS is in the vehicle, then the SDM will request the PPS status Data. If the PPS module detects a malfunction, the PPS module will set a DTC, and communicate with the SDM that a malfunction has occurred. The SDM will respond by disabling the passenger instrument panel air bag deployment loop, and then sets DTC B0081 while commanding the AIR BAG indicator ON to notify the driver of a PPS malfunction. The DTCs that the PPS module set are non-class 2 and have to be retrieved through the SDM. The procedures below are designed to assist in the retrieval of these codes. Before you start, read these procedures carefully and completely. For further information regarding the PPS refer to SIR System Description and Operation (Description and Operation).

PPS Displaying Code Procedure

Note: When the sensing and diagnostic module (SDM) starts to communicate with the PPS module, the instrument panel cluster (IPC) and dash lights will begin dimming on and off. This is normal operation during this procedure and does not indicate additional system faults.

1. Empty the front passenger seat.
2. Install a scan tool.
3. Turn ON the ignition, with the engine OFF, and wait for the PPS module to complete its bulb check function.
4. With the scan tool, request the passenger presence system (PPS) DTCs. Follow the on screen instructions.
5. The scan tool will then show any current or history DTCs. Refer to the Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle) to diagnose the DTC you have obtained.