The coolant temperature sensor consists of a negative temperature coefficient thermistor that is very sensitive to temperature changes.When the engine coolant temperature gradually increased,Thermistor resistance will gradually decline,On the contrary increases,When the engine coolant temperature changes,The output voltage of the sensor also changes accordingly. Engine coolant temperature sensor elongated head contact with the cooling liquid,The temperature of the coolant is detected by the change of the resistance value,And this signal is sent to the ECU,Used to detect the engine coolant temperature.The ECU corrects the fuel injection time and the ignition time after receiving the temperature signal. The normal use of the coolant temperature sensor is -30 , C to 120 , C,The corresponding output voltage is 0.3V ~ 4.7V.When the ECU detects an output voltage signal beyond this range,You can determine the sensor circuit failure. Weichai water temperature sensor 612600090673/612600090673 Dongfeng Tianlong, day Kam water temperature sensor water temperature plug / 0281002209 / D5010412450 Weichai Europe three cooling water temperature sensor 612600090919/612600090919 Nanchong natural gas engine 36.2D-02012 water temperature sensor assembly (ECU) / 36.2D-02012 FAW Xichai engine 6110 accessories water temperature alarm sensor / 3818010-001-0010 Dongfeng warrior accessories EQ2050 - water temperature is too low / too high sensor / 3839C21-010 Cummins water temperature sensor diesel generator set temperature alarm switch / 3408627 Natural gas engine water temperature sensor 3602160-55D Heavy Duty Hau Wo LNG Natural Gas Engine Cooling Water Temperature Sensor / R61540090004 Weichai WP10 water temperature sensor 612600090358 Nanchong natural gas engine water temperature sensor 36.2D-02012 / 36.2D-02012 Weichai engine country 3 EFI cooling water temperature sensor 612630060035 Chongqing Cummins engine M11 water temperature sensor 4921477 Shiyan Auto Parts City / 4921477