Pinpoint Tests MB: Fuel Rail Pressure (FRP) Sensor: Introduction

WARNING: This page is about a different car, the 2020 Ford F-550 Super Duty, 2020 Ford F-450 Super Duty, 2020 Ford F-350 Super Duty, 2020 Ford F-250 Super Duty, and 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.

This pinpoint test is intended to diagnose the following:

harness circuits: FRP, VREF and SIGRTN
FRP sensor (9F838)
PCM (12A650)

Fig 1: Fuel Rail Pressure (FRP) Sensor Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VREF (Reference Voltage)	1
FRP (Fuel Rail Pressure)	2
SIGRTN (Signal Return)	3

Fig 2: Powertrain Control Module-E (PCM-E) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
FRP (Fuel Rail Pressure)	73