2.3.6. Fuel filter pressure

Description

The combined pressure and temperature sensor measures the engine fuel pressure and temperature. The fuel pressure sensor is located in the main fuel filter.

ECU connection

The pin numbers at the ECU:

EDC17CV41+      2.08 5V supply voltage
EDC17CV41+      2.14 Analog input, Pressure
EDC17CV41+      2.19 Ground
EDC17CV41+      2.12 Analog input, Temperature

The pin numbers at the sensor:

Pin 2           Analog input, Pressure
Pin 3           5V supply voltage
Pin 4           Ground
Pin 5           Analog input, Temperature

The fuel pressure and temperature sensor characteristics are shown in figure ECU connection EDC17CV41+, Fuel pressure and temperature sensor.

../../_images/ACW2011720.png

ECU connection EDC17CV41+, Fuel pressure and temperature sensor

Characteristics

Output voltage (pressure):

At 100 kpa abs (~atmospheric pressure) = 0.5 V
At 1100 kpa abs = 4.5 V

Nominal resistance (temperature):

At 20ºC = 2.5 k ohm
At 100ºC = 0.186 k ohm

The fuel pressure sensor characteristics are shown in figure Characteristics, pressure sensor.

The fuel temperature sensor characteristics are shown in figure Characteristics, Fuel temperature sensor.

../../_images/FuelpChar.png

Characteristics, pressure sensor

../../_images/FuelTChar.png

Characteristics, Fuel temperature sensor