P0575

DTC P0575
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor
DTC P0575: Cruise Control Switch Signal Circuit

Circuit/System Description
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage. The BCM sends a serial data message to the engine control module (ECM) indicating the function that has been requested.

Conditions for Running the DTC
The engine is running.

Conditions for Setting the DTC
The ECM receives an invalid cruise control switch status serial data message from the BCM.
This diagnostic runs continuously.

Actions Taken When the DTC Sets
DTC P0575 is a type C DTC.

Conditions for Clearing the DTC
DTC P0575 is a type C DTC.

Reference Information
Schematic Reference
Cruise Control Schematics

Connector End View Reference
Component Connector End Views

Description and Operation
Cruise Control Description and Operation

Electrical Information Reference
Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference
Control Module References for scan tool information

Circuit/System Verification
Verify that DTC B3794 is not set.
If DTC is set, refer to DTC B3794.
Road test the vehicle and attempt to engage cruise. Verify that cruise control engages properly and the DTC P0575 is not set.
If DTC is set, replace the K9 BCM. Clear the DTC, road test the vehicle and attempt to engage cruise. If the DTC resets, replace the K20 ECM.

Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for BCM or ECM replacement, programming and setup