P0564

DTC P0564

Circuit Description

The cruise control switch is an input to the engine control module (ECM). The ECM monitors the cruise control set/coast and resume/accelerate switch signal circuit in order to detect when a cruise control function has been requested. The ECM detects a specific voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit when a cruise control function switch is activated, with each switch having a different predetermined voltage value.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0564 Cruise Control Multi-function Switch Circuit

Conditions for Setting the DTC

* The engine is running.
* Ignition voltage is greater than 7.9956 volts.


Action Taken When the DTC Sets

* The malfunction indicator lamp (MIL) will not illuminate.
* The ECM will record operating conditions at the time the diagnostic fail. This information will be stored in the Freeze Frame and Failure Records buffers.
* A history DTC is stored.


Conditions for Clearing the MIL/DTC

* A history DTC will clear after 40 warm-up cycles without a fault.
* DTCs can be cleared by using the scan tool.


Diagnostic Aids

For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics).