Fuel Temperature Sensor: Description and Operation

GF47.50-P-2010P Component Description For the Fuel Temperature Sensor
ENGINE 642 in MODEL 164.1 /8, 203.0 /2, 221.0 /1, 251.0 /1 up to Model Year 2008
ENGINE 642 in MODEL 209.3 /4, 211.0 /2 /6, 219.3
ENGINE 642 in MODEL 461.3, 463.3 up to 31.5.12





B50 Fuel temperature sensor

Location
The fuel temperature sensor is located on the right at the high-pressure pump.

Task
It detects the temperature of the fuel flowing in the high pressure pump and passes this information onto the CDI control unit (N3/9).

Design
The fuel temperature sensor possesses an integral measuring resistor with a negative temperature coefficient (NTC).

Function
The NTC measuring resistor alters its electrical resistance in line with the Coolant temperature. The electrical resistance decreases as the fuel temperature rises.