P0565

DTC P0565

Circuit Description

The cruise control switch is an input to the engine control module (ECM). The ECM monitors the cruise control 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.
* Battery voltage is greater than 7.9956 voltage.
* The ECM detects the switch is switching too quickly.

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.
* The A/C compressor operation will be disabled while the low voltage indication exists.

Conditions for Clearing the MIL/DTC

* A history DTC will clear after 40 consecutive warm up cycles without a fault.
* DTC(s) can be cleared by using the scan tool.
* Disconnecting the ECM battery feed for more than 10 seconds.

Diagnostic Aids

Inspect for internments and poor connections

Test Description

The numbers below refer to the step numbers on the diagnostic table.
2. This step tests the cruise control ON/OFF switch using the scan tool.

6. This step tests the cruise control ON/OFF switch signal circuit.