Inflatable Restraint Passenger Presence System (PPS) - (Base Models)

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The Passenger Presence System (PPS) is a calibrated unit. When replacing the assembly, all parts in the service kit must remain together. Do not mix any of the old parts with the new parts. After repairing or replacing the PPS, the system must be rezeroed in order to function properly.

The infant only passenger presence system consists of an electronic control module, a conductive based sensor mat, a harness, and PASSENGER AIR BAG ON/OFF indicators. The sensor mat is made up of a flexible conductive mat placed underneath the seat cushion trim. The passenger presence system transmits and receives a low-level electric field. The measured capacitance value of this field is used to determine the type of occupant sitting in the front passenger seat. If the measured capacitance is less than a calibrated value, then the passenger presence system module will send a serial data communication signal to the SDM to disable the passenger airbag module. If the measured capacitance is greater than a calibrated value, then the passenger presence system module will send a serial data communication signal to the SDM to enable the passenger airbag module. The SDM will notify the customer of the enable/disable status by illuminating the PASSENGER AIR BAG ON/OFF indicator. The passenger presence system monitors itself for faults and will display flash diagnostic trouble codes (DTCs) to the scan tool. When a fault is detected, the passenger presence system module sends out a message to the SDM. The SDM responds by sending a command message to the instrument panel to illuminate the PASSENGER AIRBAG ON/OFF indicator.