Diagnostic Instructions
DTC Descriptor
DTC P0565 00: Cruise Control Switch Circuit
Circuit/System Description
The cruise control resume/accel and set/coast switches are an input to the engine control module (ECM). The ECM monitors the cruise control resume/accel and set/coast switch signal circuits. The ECM detects a voltage signal on the cruise control resume/accel
and set/coast switch signal circuits when the corresponding switch is applied. This DTC sets if the ECM detects that voltage is present on the cruise control resume/accel or the set/coast switch signal circuits for longer than 1 second, when the cruise
on/off switch is in the off position.
Conditions for Running the DTC
| • | The cruise control switch is OFF. |
Conditions for Setting the DTC
The ECM detects that the resume/accel or the set/coast switch is applied for longer than 1 second when the ECM detects that the cruise on/off switch is OFF.
Action Taken When the DTC Sets
| • | The ECM stores the DTC information into memory when the diagnostic runs and fails. |
| • | The malfunction indicator lamp (MIL) will not illuminate. |
| • | The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records. |
| • | The cruise control system is disabled. |
Conditions for Clearing the DTC
| • | A last test failed, or the current DTC, clears when the diagnostic runs and does fail. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if the failures are not reported by this or any other emission related diagnostic. |
Reference Information
Schematic Reference
Cruise Control Schematics
Connector End View Reference
Engine Control Module Connector End Views
Description and Operation
Cruise Control Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Engine ON, cruise control switch ON, verify that the Cruise On/Off Switch parameter reads On.
| ⇒ | If the scan tool parameter reads Off, test the cruise control on switch signal circuit for an open/high resistance. If the circuit tests normal, replace the turn signal/multifunction switch. |
- Ignition OFF, disconnect the harness connector at the turn signal multifunction switch.
- Engine ON, verify that the Cruise Set/Coast Switch parameter reads Off.
| ⇒ | If the scan tool parameter reads On, test the cruise control set/coast switch signal circuit for a short to voltage. If the circuit tests normal, replace the ECM. |
- Engine ON, verify that the Cruise Resume/Accel. Switch parameter reads Off.
| ⇒ | If the scan tool parameter reads On, test the cruise resume/accel switch signal circuit for a short to voltage. If the circuit tests normal, replace the ECM. |
- If all circuits test normal, test or replace the turn signal/multifunction switch.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
