DTC P0181: FTT Sensor: Description
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>
| Fluid temperature [°C (°F)] |
Voltage* (V) | Resistance (kΩ) |
|---|---|---|
| 20 (68) | 3.5 | 2.3 - 2.7 |
| 50 (122) | 2.2 | 0.79 - 0.90 |
*: These data are reference values and are measured between ECM terminals 106 (Fuel Tank Temperature Sensor) and 128 (ECM ground).