Circuit/System Description

When the ignition is turned ON, the passenger presence system (PPS) and the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. The PPS is used to monitor the weight of an occupant in the front passenger seat. If the pressure from the occupant's weight is less than a specified value or an empty seat is detected, the PPS module will send a suppress signal to the SDM to disable the instrument panel (I/P) module. When the PPS detects a fault within itself, then the PPS will communicate to the SDM through serial data communications that a PPS fault is present. The SDM will suppress the deployment of the module and then turn the AIR BAG indicator ON.

DTC B0056 set because the PPS commanded to suppress the I/P inflator module when the vehicle was involved in a collision and the SDM has commanded an air bag deployment.

DTC B0057 set because the PPS commanded to suppress the side impact module when the vehicle was involved in a collision and the SDM has commanded an air bag deployment.

DTC B0058 set because the PPS commanded to suppress the seat belt pretensioner when the vehicle was involved in a collision and the SDM has commanded an air bag deployment.