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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 C0000 >> 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 power steering control module (PSCM) receives a vehicle speed message via the serial data circuit from the powertrain control module (PCM), if equipped with a 2.0L engine (LSJ), or from the engine control module (ECM), if equipped with a 2.2L engine (L61) or a 2.4L engine (LE5). The ECM receives the vehicle speed message from the transmission control module (TCM), if equipped with an automatic transmission (MN5). The PSCM uses this vehicle speed message, and other inputs, to determine the desired amount of steering assist. At lower speeds, more assist is provided for easy turning during parking maneuvers. At higher speeds, less assist is provided for improved road feel and directional stability.

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