LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1131 (Cruise Control System) >> Diagnostic Tests >> Speed Control >> Pinpoint Tests >> Pinpoint Test C: DTC P0579 or DTC P0581 - Speed Control Switch Circuit Failure >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The PCM sends a signal through circuit VES10 (WH) to the speed control switches, which passes through the clockspring. The return signal is sent to the PCM through circuit RES08 (GN/BN) and the clockspring.

DTC P0579 - may set when the speed control switch circuits are open, shorted to voltage or ground.

DTC P0581 - sets when the speed control switch circuits are shorted to voltage or open.

Possible Causes

scientia non olet · About LEMON Manuals