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Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- XF/(X260)) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol (G2006487) >> Description And Operation >> Electronic Engine Controls >> Description >> Fuel Rail Pressure And Temperature Sensor

Fuel Rail Pressure And Temperature Sensor

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G11308553Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The Fuel Rail Pressure and Temperature (FRPT) sensor is located at the top of the fuel rail. The FRPT sensor is screwed into a threaded port and sealed with a mating taper in the fuel rail.

The FRPT sensor has a 4 pin electrical connector which is connected to the Powertrain Control Module (PCM) via the engine wiring harness. The electrical connector provides a 5V reference voltage from the PCM, a pressure and a temperature signal input to the PCM and a ground connection.

The FRPT comprises a piezo-resistive type sensor containing an actuating diaphragm. Deflection of the diaphragm provides a proportional signal output voltage to the PCM, dependent on the fuel pressure within the fuel rail.

The temperature sensor is a Negative Temperature Coefficient (NTC) type sensor, which allows the PCM to determine the fuel temperature.

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