Circuit Description
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The Power Steering Control Module (PSCM) monitors the temperature of the Electric Power Steering (EPS) system. The PSCM uses voltage and current levels to calculate an estimated system temperature. If the PSCM detects a high system temperature event is occurring the amount of assist is reduced to lower the EPS system temperature to prevent system thermal damage.