P0568

DTC P0568 Cruise Control Set Switch Circuit

Circuit Description

The cruise control keeps the vehicle speed at a driver's's set speed. When the cruise main switch is pressed ON signal is provided to the ECM and the cruise main indicator lamp on the instrument panel cluster will light up. When the cruise set! coast switch is turned to SET (-) the switch signal is provided to the ECM and the vehicle speed is set or vehicle speed is decreased. If the ECM detects the cruise set! coast switch signal continuously ON this DTC will set.

Condition for Running the DTC

^ The battery voltage is between 10 to 16 volts.
^ The ignition switch is ON.

Condition for Setting the DTC

^ The ECM detects that the cruise set! coast switch signal is stuck at the ON position (high voltage) for longer than 60 second.

Action Taken When the DTC Sets

^ The ECM illuminates the SVS lamp when the diagnostic runs and fails. Refer to DTC Type Definitions for Action Taken When the DTC Sets - Type C.
^ The ECM inhibits cruise control.
^ The ECM inhibits PTO control.

Condition for Clearing the DTC

^ Refer to DTC Type Definitions for Condition for Clearing the SVS Lamp DTC - Type C.

Diagnostic Aids

^ If an intermittent condition is suspected refer to Intermittent Conditions in this section.

Notice: This DTC will set if the cruise set/coast switch continues to be turned to SET (-) for longer than 60 seconds.

Circuit/System Testing DTC P0568