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.
CONDITIONS FOR SETTING THE DTC
- 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.
- DTC(s) can be cleared by using the scan tool.
DIAGNOSTIC AIDS
For an intermittent condition, refer to "Intermittents".
TEST
