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Coolant Temperature Sensor

The coolant temperature sensor is detects the coolant temperature. This sensor uses a thermistor that changes its electrical resistance according to the temperature. VCM detects a voltage change according to electrical resistance change.

Fig 1: Identifying Coolant Temperature Sensor
G08702912Courtesy of NISSAN NORTH AMERICA, INC.

<Reference value>

Coolant temperature [°C (°F)] Voltage (V) Resistance (kΩ)
-10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.35 - 2.73
50 (122) 2.2 0.68 - 1.00
90 (194) 0.9 0.236 - 0.260
Fig 2: Coolant Temperature Sensor Resistance Graph
G08702913Courtesy of NISSAN NORTH AMERICA, INC.