P0575

DTC P0575

CIRCUIT DESCRIPTION
The body control module (BCM) monitors the cruise control set/coast and resume/accelerate switch signal circuit. When a cruise control function switch is activated, the 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.

CONDITIONS FOR RUNNING THE DTC
- The ignition is ON.
- The cruise control On/Off switch is ON.
- The set/coast switch or the resume/accel switch are individually pressed.

CONDITIONS FOR SETTING THE DTC
The PCM receives an invalid cruise control switch status GMLAN serial data message from the BCM.

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.

CONDITIONS FOR CLEARING THE MIL/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 module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
- If this DTC is retrieved as both a current and history DTC, replace the module.

TEST

Steps 1-4: