P0575

DTC P0575

DTC DESCRIPTOR

DTC P0575
Cruise Control Switch Signal Circuit

DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

CIRCUIT/SYSTEM DESCRIPTION
When a cruise control function switch is applied, the body control module (BCM) detects a predetermined voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit. The BCM sends a GMLAN serial data message to the engine control module (ECM) indicating that the function has been requested.

CONDITIONS FOR SETTING THE DTC
- The ECM receives an invalid cruise control switch status GMLAN serial data message from the BCM.
- This diagnostic runs continuously.

ACTION TAKEN WHEN THE DTC SETS
- The Cruise Control System is disabled.
- The ECM stores the DTC information into memory when this diagnostic runs and fails.
- The malfunction indicator lamp (MIL) will not illuminate.
- The ECM records the operating conditions at the time that this diagnostic fails. The ECM stores this information in the Failure Records.
- All of the scan tool cruise control function switch parameters are set to Off.

CONDITIONS FOR CLEARING THE DTC
- A last test failed, or the current DTC, clears when the diagnostic runs and does not fail.
- A history DTC clears after 40 consecutive warm-up cycles, if failures are not reported by this or any other emission related diagnostic.
- Use the scan tool in order to clear the DTC.

CIRCUIT/SYSTEM TESTING

NOTE: Fix any Cruise Control System related DTCs before using this diagnostic.

IMPORTANT: This DTC may be stored as a history DTC without affecting the operation of the BCM. Do not replace the BCM if this DTC is stored only as a history DTC and is not retrieved as a current DTC.

Using a scan tool, is DTC P0575 current in the ECM?
- If DTC P0575 is current, replace the BCM.
- If DTC P0575 is not current, the system is

REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Control Module References for BCM replacement, setup, and programming.