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Home >> Infiniti >> 2013 >> M37 Sport >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) (VQ37VHR) >> System Description >> Component Parts >> Fuel Tank Temperature Sensor
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Fuel Tank Temperature Sensor

The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

<Reference data> 

Fig 1: Fuel Tank Temperature Sensor Resistance Versus Temperature Graph
G08884385Courtesy of NISSAN NORTH AMERICA, INC.
Fluid temperature [°C (°F)] Voltage(1) (V) Resistance (kΩ)
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
(1) These data are reference values and are measured between ECM terminals 106 (Fuel tank temperature sensor) and 128 (ECM ground).
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