P0575

DTC P0575

Diagnostic Instructions

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

DTC Descriptor
DTC P0575
- Cruise Control Switch Signal Circuit

Diagnostic Fault Information





Circuit/System Description

The cruise control switch is an input to the instrument panel cluster (IPC). The IPC 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 IPC 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. Once a cruise control function has been requested, the IPC sends a command via serial data to the engine control module (ECM).

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The ECM detects an invalid voltage signal on the cruise control switch signal circuit.

Actions Taken When the DTC Sets

The cruise control system is disabled.

Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists.

Reference Information
Schematic Reference

Cruise Control Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

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

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the Cruise On/Off switch parameter. The reading should be Off and change to On when the switch is pressed.
2. Observe the Cruise Set/Coast Switch parameter. The reading should be Inactive and change to Active when the switch is pressed.
3. Observe the Cruise Resume/Accel. Switch parameter. The reading should be Inactive and change to Active when the switch is pressed.

Circuit/System Testing

1. Ignition OFF, disconnect the cruise control switch connector.
2. Ignition ON, Verify the cruise control switch parameters are Off or Inactive.

• If not the specified values test the switch signal circuit for a short to voltage. If the circuit tests normal replace the IPC.

3. If all circuits test normal replace the cruise control switch.

Repair Instructions

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

* Cruise Control Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for IPC replacement, setup, and programming