Pinpoint Tests Ma: Fuel Pump Control - Low Pressure Pump: 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:

fuel pump (FP) (9H307)
fuel pump control module (9D412)
fuel pump relay
harness circuits: B+, GND, FP, FPC, FPM, FPPWR, FPRTN, and VPWR Fuel
PCM (12A650)

Fig 1: Fuel Pump (FP) Assembly Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-650/F-750	A	1 2	FPGND FPPWR-B
Transit	B	3 4	FPRTN FPPWR
All other vehicles	C	3 4	FPRTN FPPWR

Fig 2: Fuel Pump Control Module Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
8	FPRTN (Fuel Pump Return)
5	FPPWR (Fuel Pump Power)
7	FPM (Fuel Pump Monitor)
3	FPC (Fuel Pump Command)
4	GND (Ground)
1	VPWR Fuel

Fig 3: Fuel Pump (FP) Relay Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-650/F-750	A	2 5 1, 3	FPC FPPWR-A B+
Transit	B	2 1, 3 5	FP B+ VPWR Fuel

Fig 4: Body Control Module-C (BCM-C) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
12	FP (Fuel Pump)

Fig 5: Battery Junction Box-A (BJB-A) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
24	FP (Fuel Pump)
25	VPWR Fuel

Fig 6: Battery Junction Box-B (BJB-B) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
50	VPWR Fuel

Fig 7: Battery Junction Box-C (BJB-C) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
3	FP (Fuel Pump)

Fig 8: Powertrain Control Module-B (PCM-B) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-650/F-750	A	32 19	FPM FPC
Transit	B	14	FPC
All other vehicles	A	18 32 19	FP FPM FPC

Fig 9: Powertrain Control Module-T (PCM-T) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
31	FPM (Fuel Pump Monitor)