Circuit/System Description

WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

The passenger presence system (PPS) is used to monitor the pressure profile of any occupant that is sitting in the front outboard passenger seat and communicates the profile classification to the sensing and diagnostic module (SDM). The SDM will either enable or suppress the deployment of the instrument panel (I/P) module based on the profile classification of the occupant. If the PPS has been replaced a preload test must be run on the serviced seat before that vehicle is released back to the customer. When a new PPS is installed a DTC will set indicating that a preload test needs to be preformed. If the PPS detects any preload DTC, the PPS will communicate to the SDM through a non GMLAN communications circuit that a PPS fault is present. The SDM will set DTC B0081 indicating a problem within the PPS, suppress deployment of the I/P module, and turn the AIR BAG indicator ON.