PINPOINT TEST KB: Fuel Pump Driver Module: Introduction

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Crown Victoria Police Interceptor vehicles equipped with fire suppression system, refer to part 419-03 for Important Safety Warnings. Failure to follow these instructions may result in personal injury.

This pinpoint test is intended to diagnose the following:

fuel pump driver module (FPDM) (9D370) and (9D372)
FPDM power supply relay
inertia fuel shutoff (IFS) switch (9341)
harness circuits: B+, GND, FPC, FPM, FPM2, FP PWR, FP2PWR, FP RTN, FP2RTN, VPWR Fuel, VPWR Fuel 2, and PWRGND
powertrain control module (PCM) (12A650)

Fig 1: Fuel Pump Driver Module (FPDM2) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	FPRTN (Fuel Pump Return)
4	FPPWR (Fuel Pump Power)
6	FPC (Fuel Pump Command)
1	FPM (Fuel Pump Monitor)
3	PWRGND (Power Ground)
5	VPWR Fuel

Fig 2: Fuel Pump Driver Module 2 (FPDM2) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	FP2RTN (Fuel Pump 2 Return)
4	FP2PWR (Fuel Pump 2 Power)
6	FPC (Fuel Pump Command)
1	FPM2 (Fuel Pump Monitor 2 - Rear\Secondary Pump)
3	PWRGND (Power Ground)
5	VPWR Fuel 2

Refer to the Wiring Diagrams article for schematic and connector information. For F-150 and Mark LT, the FPDM PWR relay is integral to the PDJB.

Fig 3: Powertrain Control Module Power (PCM Power) Relay Connector - A

Courtesy of FORD MOTOR CO.

Fig 4: Fuel Pump Driver Module Power (FPDM PWR) Relay Connector - B

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Crown Victoria, Grand Marquis, Town Car	A	5 1 2 3	VPWR Fuel GND VPWR B+
Escape/Mariner, F-Super Duty	B	87 85 86 30	VPWR Fuel GND VPWR B+
All other vehicles	A	5 2 1 3	VPWR Fuel GND VPWR B+

Refer to the Wiring Diagrams article for schematic and connector information.

Fig 5: Powertrain Control Module Power (PCM Power) Relay Connector - A

Courtesy of FORD MOTOR CO.

Pin	Circuit
5	VPWR Fuel 2
2	GND (Ground)
1	VPWR (Vehicle Power)
3	B+ (Battery Positive Voltage)

Fig 6: Inertia Fuel Shutoff (IFS) Switch Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	VPWR Fuel - A
1	VPWR Fuel - B

This applies to applications with an FPDM PWR relay integral to the PDJB.

Fig 7: Power Distribution Junction Box (PDJB) Connector - B

Courtesy of FORD MOTOR CO.

Pin	Circuit
3	VPWR Fuel

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle	Connector	Pin	Circuit
Escape/Mariner	150 (50-50-50) Pin	B12 B21	FPC FPM
F-150, Mark LT	190 Pin	B62 B30	FPC FPM
Mustang 5.4L	170 Pin	T18 B12 B21	FPM2 FPC FPM
All other vehicles	170 Pin	B12 B21	FPC FPM