Pinpoint Tests MC: Fuel Temperature Sensor: Introduction

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:

FRT sensor (9F951)
fuel pressure and temperature sensor
harness circuits: FRT and SIGRTN
PCM (12A650)

Fig 1: Fuel Rail Temperature (FRT) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	SIGRTN (Signal Return)
1	FRT (Fuel Rail Temperature)

Fig 2: Fuel Pressure And Temperature Sensor Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-650/F-750, F-Series Super Duty	A	4 5	SIGRTN FRT
F-150	B	3 4	SIGRTN FRT

Fig 3: Powertrain Control Module-E (PCM-E) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit	A	6 31	SIGRTN FRT
All other vehicles	B	4 35	SIGRTN FRT