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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 654 (Power Steering System) >> Diagnostic Information and Procedures >> DTC C0845 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) contains the 2-amp EPS fuse. This fuse and the ignition 1 voltage circuit supply ignition voltage to the power steering control module (PSCM). This ignition voltage is used to wake up the PSCM. The PSCM receives a class 2 power moding message from the BCM to determine the position of the ignition switch. When a power mode message is received, the PSCM monitors the ignition 1 voltage circuit to detect if a short to voltage, short to ground, or an open exists.

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