Temperature Sensor (Gauge): Description and Operation
Temperature GaugeThe PCM receives the engine coolant temperature status through hardwired circuitry to the cylinder head temperature (CHT) sensor. The instrument cluster receives the engine coolant temperature data from the PCM over the communication network. The instrument cluster monitors the engine coolant temperature data received from the PCM and provides the temperature gauge indication with a corresponding movement of the pointer. If the instrument cluster receives no signal the temperature gauge defaults to the COLD position.