Engine Coolant Temperature Gauge

The Instrument Panel Custer (IPC) displays the engine coolant temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gauge defaults to "C" if the PCM detects a malfunction in the engine coolant temperature sensor circuit or the IPC detects a loss of class 2 communications with the PCM.