Scan Tool Data Definitions - Fixed and Moveable Windows

Rear Defog Relay Cmd.  The scan tool displays On/Off. The body control module will indicate if it is commanding the rear defog relay On or Off.

Rear Defog Relay Fdbk.  The scan tool displays High/Low. This input to the BCM displays the state of the rear defog relay feedback circuit. Low is displayed when the BCM is providing a ground to the rear defog relay control circuit.

Rear Defog Switch  The scan tool displays On/Off. The BCM receives an input from the HVAC control head indicating On when the rear defog system is turned On.