Coolant Temperature Sensor; Outline Of Coolant Temperature Sensor; Structure Of Coolant Temperature Sensor; Function Of Coolant Temperature Sensor - Kubota D1803-CR-E4 Workshop Manual

MECHANISM
3. Fuel system

3.20 Coolant temperature sensor

3.20.1 Outline of coolant temperature
sensor
The coolant temperature
temperature of the coolant inside the engine.
3.20.2 Structure of coolant temperature
sensor
The coolant temperature sensor is made up of a
thermistor and connector and the like.
(1) Thermistor
(2) Terminal THW
(3) Terminal A-GND2
(4) +5V
3.20.3 Function of coolant temperature
sensor
The coolant temperature
temperature of the coolant inside the engine.
When the engine coolant temperature changes the
resistance of the thermistor at the tip of the sensor
changes.
Then the resistance of the thermistor changes, the
sensor output voltage changes.
The output voltage signal of the sensor is sent to the
engine ECU.
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
sensor detects the
(5) Engine ECU
(a) Coolant temperature sensor
sensor detects the
3.20.4 Specification of coolant temperature
sensor
Operating voltage
Output characteristics
(1) Voltage
(2) Resistance
(A) Voltage (V) / Resistance
(kΩ)
Temperature
20 ℃
68 ℉
40 ℃
104 ℉
60 ℃
140 ℉
80 ℃
176 ℉
100 ℃
212 ℉
4. ENGINE
5 V
(B) Temperature (℃ / ℉)
Resistance ( kΩ)
Approx. 2.5
Approx. 1.2
Approx. 0.58
Approx. 0.32
Approx. 0.18
4-33
KiSC issued 12, 2018 A