5-M14
ZD21N-EC, ZD21-EC, ZD28-EC, WSM
ELECTRICAL SYSTEM
[2] COOLANT TEMPERATURE
■ Coolant Temperature Sensor
The coolant temperature sensor is installed to the
cylinder head of engine, and its tip is in touch with the
coolant. It contains a thermistor (4) whose electrical
resistance decreases as the temperature increases.
Current varies with changes in the coolant
temperature, and the increases or decreases in the
current move the pointer of gauge.
W1014123
Characteristics of Thermistor
Temperature Resistance
50 °C (122 °F) 153.9 Ω
80 °C (176 °F) 51.9 Ω
100 °C (212 °F) 27.4 Ω
120 °C (248 °F) 16.1 Ω
(1) Terminal
(2) Insulator
(3) Body
(4) Thermistor
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