Fuel Pump Circuit Wiring Diagram (2004 4.0L V6 Ford Explorer And Mercury Mountaineer)

APPLIES TO: This fuel pump circuit wiring diagram applies to the following vehicles:

The wiring diagram includes the following circuits:

PCM Power Relay.
Fuel Pump Relay.
Fuel Pump Inertia Switch.
- Location: The fuel pump inertia switch is located behind the passenger side kick panel.
Fuel Pump Driver Module.
- Location: The Fuel Pump Driver Module is mounted at the D-pillar area —that's the vertical support at the very rear of the vehicle, on the passenger side. You'll find it just inside the liftgate, behind the interior trim panel near the right rear wheel well.
Fuel Pump.

FUEL PUMP PRESSURE TESTS: This step-by-step guide will help you check the fuel pump's pressure output:

How To Test The Fuel Pump (2001–2003 4.0L V6 Ford Explorer And Mercury Mountaineer).

ENGINE NO-START DIAGNOSTICS: This guide walks you through the key systems to check when your engine cranks but refuses to start:

How To Troubleshoot A No-Start Problem (1991-2010 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).

FUEL PUMP INERTIA SWITCH DIAGNOSTICS: Testing the inertia cut-off switch is a pretty simple affair. These tuts will help you:

Related Fuel Pump Circuit Wiring Diagrams

Need more wiring diagrams? Here are a few others you might find useful:

You can find a complete list of wiring diagrams and diagnostic test tutorials here:

Here's a sample of the tutorials you'll find there:

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