V50 AWD L5-2.5L Turbo VIN 68 B5254T3 (2005)
Fuel Temperature Sensor: Description and Operation
Fuel Temperature Sensor
The fuel pressure sensor is combined and consisted of both the fuel pressure sensor and the fuel temperature sensor. The sensor detects the fuel pressure
(the absolute pressure) and the temperature of the fuel in the fuel rail.
The fuel pressure sensor is on the right-hand end of the fuel rail.
Fuel temperature sensor
The temperature sensor is an NTC sensor. The sensor is supplied with voltage (signal) from and grounded in the engine control module (ECM). The
resistance in the sensor changes according to the temperature of the fuel. This provides the engine control module (ECM) with a signal of between 0 - 5
V. Low temperature results in high voltage (high resistance). High temperature results in low voltage (low resistance). The engine control module (ECM)
uses the signal to calculate fuel density.
