Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power Circuits
Turn ignition off. Using a voltmeter, check for battery voltage between ground and PCM terminal No. 55 (KAPWR). Turn ignition switch to START or RUN position. Check for battery voltage between ground and PCM connector terminals No. 71 (VPWR). If battery voltage is not present, power is not being supplied from PCM power relay. See TEST B under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V article.
| Application | Location | |
|---|---|---|
| Continental, Sable & Taurus | Right Rear Of Engine Compartment, Mounted On Cowl | |
| Contour, Cougar & Mystique | Right Side Of Engine Compartment | |
| Crown Victoria, Grand Marquis & Town Car | Behind Master Cylinder | |
| Econoline | Left Rear Of Engine Compartment, Near Brake Master Cylinder | |
| Escort & Tracer | Underneath Center Console | |
| Expedition & Navigator | Right Side Of Engine Compartment | |
| Explorer, Mountaineer & Ranger | Right Rear Of Engine Compartment, Mounted On Cowl | |
| Mustang | Behind Right Kick Panel | |
| Pickup | ||
| F150 & F250 | Right Side Of Engine Compartment | |
| Super-Duty Models | Behind Left Side Of Instrument Panel, Near Bake Pedal | |
| Windstar | Right Rear Of Engine Compartment, Mounted On Firewall | |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.