P0575
DTC P0575
CIRCUIT DESCRIPTION
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage signal. The BCM sends a GMLAN serial data message to the powertrain control module (PCM) indicating the function that has been requested.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0575 Cruise Control Switch Signal Circuit
CONDITIONS FOR RUNNING THE DTC
The ignition is ON.
CONDITIONS FOR SETTING THE DTC
- The PCM 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 PCM stores the DTC information into memory when the diagnostic runs and fails.
- The malfunction indicator lamp (MIL) will not illuminate.
- The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Failure Records.
- All cruise control function switches 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.
DIAGNOSTIC AIDS
- This DTC may be stored as a history DTC without affecting the operation of the BCM. If stored only as a history DTC and not retrieved as a current DTC, do not replace the BCM.
- If this DTC is retrieved as both a current and history DTC, replace the BCM.
TEST
