LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2000 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - Diesel >> Diagnostic Tests >> DTC P0568: Cruise Set Circuit >> Circuit Description

Circuit Description

Cruise set/coast switch is an input to fuel control portion of PCM. Inputs allow PCM to control and hold requested speed. Cruise set/coast switch sends ignition voltage to PCM when set/coast switch is on.

DTC will set when cruise switch is off and ignition voltage is present on set switch signal circuit, or cruise switch is on and set switch is on for more than 25.5 seconds.