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Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- Discovery Sport/L550) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol >> Description And Operation >> Description >> Fuel Rail Pressure And Temperature Sensor

Fuel Rail Pressure And Temperature Sensor

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.
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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 four pin electrical connector which is connected to the Powertrain Control Module (PCM) via the engine harness. The electrical connector provides a 5 V 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.