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Home >> Jaguar >> 2017 >> XJR Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Fuel Charging & Controls - V8 S/C 5.0L Petrol -- XJ/X351 >> Fuel Charging And Controls - V8 S/C 5.0 L Petrol >> Description And Operation >> System Operation And Component Description >> Fuel Rail Pressure And Temperature (FRPT) Sensor

Fuel Rail Pressure And Temperature (FRPT) Sensor

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The FRPT sensor provides the ECM with a continuous signal of fuel rail pressure via hardwired connection. The FRPT sensor is installed in the rear of the Bank 1 fuel rail. The FRPT sensor is screwed into a threaded boss in the fuel rail.

The FRPT sensor contains a steel diaphragm fitted with strain gages, which are incorporated into a Wheatstone bridge. The output from the Wheatstone bridge is processed by the ECM to determine a pressure value. The FRPT sensor contains an NTC (Negative Temperature Coefficient) sensor which allows the ECM to determine the fuel temperature.