P0567

DTC P0567

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.

DTC Descriptor
DTC P0567 00
^ Cruise Control Resume Switch Circuit

Diagnostic Fault Information





Circuit/System Description

The cruise control switch is an input to the engine control module (ECM). The ECM monitors the cruise control switch signal circuits in order to detect when a cruise control function switch has been activated. The ECM detects a voltage signal when a cruise control function switch is applied.

Conditions for Running the DTC

* The ignition is ON.
* The cruise control switch is ON.

Conditions for Setting the DTC

The ECM detects that the resume/accel switch is applied for longer than 90 seconds.

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.

Diagnostic Aids

Ensure that the resume/accel switch is not stuck or sticking in the pressed position.

Reference Information
Schematic Reference

Cruise Control Schematics ([1][2]Cruise Control)
Connector End View Reference

Component Connector End Views (Component Connector End Views)
Description and Operation

Cruise Control Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Control Module References)for scan tool information

Circuit/System Verification

Ignition ON, Cruise Control Switch ON, verify that the Cruise Resume/Accel. Switch parameter reads Inactive (OFF). The switch parameter should change to Active (ON) and back to Inactive (OFF) as the switch is pressed and released.

Circuit/System Testing

1. Ignition OFF, disable the SIR system. Refer to SIR Disabling and Enabling (Service and Repair).
2. Disconnect the turn signal multifunction switch harness connector X4.
3. Ignition ON, verify that the scan tool Cruise Resume/Accel. Switch parameter displays Off or Inactive.

• If the scan tool parameter reads On, Active or Invalid, test the cruise control resume/accel switch signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.

4. Connect a 3 amp fused jumper between terminals A and C of the turn signal multifunction switch harness connector X4. Verify that the scan tool Cruise Resume/Accel. Switch parameter displays On.

• If the scan tool parameter reads Off test the cruise control resume/accel. switch signal circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

5. If the circuit tests normal, test or replace the cruise control switch assembly.

Component Testing

1. Ignition OFF, disable the SIR system. Refer to SIR Disabling and Enabling (Service and Repair).
2. Disconnect the turn signal multifunction switch harness connector X4.
3. Turn the cruise control ON/OFF switch ON.
4. Test for infinite resistance between terminals A and C of the turn signal multifunction switch.

• If not the specified value, replace the turn signal multifunction switch.

5. Press and hold the resume/accel switch. Test for less than 1 ohm resistance between terminals A and C of the turn signal multifunction switch.

• If not the specified value, replace the turn signal multifunction switch.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Turn Signal Multifunction Switch Replacement (Turn Signal Multifunction Switch Replacement)
* Control Module References (Control Module References)for ECM replacement, setup, and programming