Component Tests and General Diagnostics

Passenger Presence System Displaying Code Procedure

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 SDM retrieves PPS DTCs through a dedicated serial data circuit. 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 (SIR System).

PPS Displaying Code Procedure

Note: When the sensing and diagnostic module (SDM) starts to communicate with the PPS module, the instrument panel cluster (IPC) will illuminate the dash lights 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 to complete its bulb check function.
4. After the bulb check is complete retrieve PPS module DTCs using the Passenger Presence System screen on the scan tool. The scan tool will instruct you on how to retrieve the PPS module DTCs.