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 illuminate the AIR BAG indicator.

Ignition voltage is between 9-16 volts.

The PPS will set this DTC when replaced.

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Verify DTC 1051 is not set.

⇒	If DTC 1051 is set as current, refer to Passenger Presence System Preload Test.

2. Verify that DTC 1052, 1053, 1054, or 1055 are not set.

⇒	If any of the DTCs are set, refer to DTC 1052, 1053, 1054, or 1055.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.