Circuit/System Description
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.
When the ignition is turned ON, the passenger presence system (PPS) module performs tests to diagnose critical malfunctions within itself. When the PPS module has completed the power-up mode, the module will establish communication with other related modules. The module will set DTC B101D, and communicate with other related modules that an internal fault DTC has been set.