1994 Honda Accord Fuel Pump Fuse Location: The Complete Guide to Diagnosis and Replacement
The fuel pump fuse on a 1994 Honda Accord is located in the passenger compartment fuse box under the dashboard on the driver's side. It is a 15-amp fuse, labeled as position number 15 in the internal fuse box diagram. This fuse powers the fuel pump circuit, and when it blows, your Accord will not start because the fuel pump cannot receive power to deliver fuel to the engine.
If you are reading this because your 1994 Accord won't start, you are in the right place. This guide will walk you through exactly where to find the fuel pump fuse, how to check if it is blown, what causes it to fail, and what to do if the fuse is not the problem. We will also cover the PGM-FI main relay, which is another common culprit that causes the same symptoms.
Where Is the Fuel Pump Fuse on a 1994 Honda Accord?
The fuel pump fuse is inside the internal fuse box, which is located under the dashboard on the driver's side of the car. To access it, you need to sit in the driver's seat and look below the steering column. You will see a small plastic cover that can be pulled off by hand.
Once the cover is removed, look at the diagram printed on the inside of the fuse box cover or on the fuse box itself. The fuel pump fuse is listed as fuse number 15, and it is rated at 15 amps. Here is a quick reference for the key fuses you will find in this box:
- Fuse 15 (15A): Fuel pump – This is the one you need to check first.
- Fuse 3 (7.5A): Starter signal – This fuse controls the starter circuit.
- Fuse 14 (20A): SRS (airbag system) – Do not touch this unless you know what you are doing.
- Fuse 9 (30A): Wiper and windshield washer.
The fuse box also contains a separate ABS fuse box in the engine compartment, but the fuel pump fuse is not in that box. The ABS fuse box is located on the right side of the engine compartment in front of the shock tower. Do not confuse the two.
How to Check if the Fuel Pump Fuse Is Blown
Checking the fuel pump fuse is a simple process that takes about five minutes. You do not need any special tools, although a fuse puller or a pair of needle-nose pliers will make the job easier.
Step 1: Turn off the engine and remove the key from the ignition.
Step 2: Open the driver's side door and locate the fuse box cover under the dashboard. Pull the cover off.
Step 3: Find fuse number 15. It should be a small, rectangular plastic fuse with two metal prongs. The 15-amp rating means the plastic body will be light blue in color.
Step 4: Pull the fuse out using a fuse puller or pliers. Hold it up to the light. If you see a broken metal filament inside the clear plastic, the fuse is blown. If the filament looks intact and continuous, the fuse is good.
Step 5: If you have a multimeter, you can also check for continuity. Set the meter to the ohms or continuity setting, touch one probe to each metal prong on the fuse. A good fuse will show a reading close to zero ohms, indicating continuity. A blown fuse will show no continuity, meaning the circuit is open.
Step 6: If the fuse is blown, replace it with a new 15-amp fuse. Do not use a fuse with a higher amperage rating, as this can cause damage to the wiring or even start a fire.
Why Does the Fuel Pump Fuse Blow in a 1994 Honda Accord?
If you find that the fuel pump fuse is blown, replacing it is only a temporary fix unless you address the underlying cause. The fuse blows because it is drawing too much current, which is usually caused by one of these problems:
Short circuit in the wiring: The most common cause is a short circuit in the fuel pump wiring. Over time, the wires that run from the fuse box to the fuel pump can become damaged, frayed, or exposed. If the bare wire touches the metal body of the car, it creates a direct path to ground, causing a massive current surge that blows the fuse. This is especially common on older cars like the 1994 Accord, where the wiring insulation may have degraded over 30 years.
Failing fuel pump: A fuel pump that is reaching the end of its life may draw more current than normal. As the internal bearings wear out or the motor becomes clogged with debris, the pump has to work harder to push fuel. This increased current draw can overload the fuse and cause it to blow. If you notice that the fuse blows only after the car has been running for a while, the pump is likely the culprit.
Clogged fuel filter: A severely clogged fuel filter makes the pump work much harder than it should. The pump has to generate higher pressure to push fuel through the restriction, which increases the electrical current draw. If the fuel filter has not been changed in a long time, it is worth replacing it before you replace the pump.
Incorrect fuse replacement: If someone previously replaced the fuel pump fuse with one that has a lower amperage rating than the specified 15 amps, it will blow under normal operating conditions. Always check that the replacement fuse is exactly 15 amps.
What to Do If the Fuse Is Good but the Fuel Pump Still Does Not Work
If you check the fuel pump fuse and it is not blown, the problem is likely elsewhere in the fuel pump circuit. The most common issue on the 1994 Honda Accord is the PGM-FI main relay. This relay controls the power supply to the fuel pump and the Engine Control Unit (ECU).
The PGM-FI main relay is located behind the left side of the dashboard, near the steering column. On the 1994 Accord, it is mounted on a bracket to the left of the steering column, often behind the power steering control box. It is a small, rectangular black box with a 7-pin connector.
How to test the PGM-FI main relay:
- Turn the key to the ON position but do not crank the engine. You should hear the fuel pump run for about two seconds and then shut off. If you hear nothing, the relay may be bad.
- If you have a multimeter, you can check for 12 volts at the fuel pump connector. The fuel pump access panel is under the carpet in the trunk, above the spare tire. With the ignition ON, check for voltage at the pump connector. If you have voltage but the pump does not run, the pump is bad. If you have no voltage, the problem is upstream, likely the relay, fuse, or wiring.
- You can also swap the fuel pump relay with another relay of the same type in the fuse box, such as the horn or A/C relay. If the car starts after swapping, the fuel pump relay is bad.
Other possible causes:
- Defective fuel pump: If the relay is good and power is reaching the pump, but the pump does not run, the pump itself is likely faulty. On the 1994 Accord, the fuel pump is located inside the fuel tank, and it requires lowering the tank to replace it.
- Activated impact sensor: Some vehicles have an inertia switch that cuts power to the fuel pump in a crash. If this switch is accidentally triggered, the pump will not run. On the 1994 Accord, this is less common, but it is worth checking the service manual for your specific model.
- ECU problems: The Engine Control Unit controls the fuel pump relay. If the ECU is faulty or if the sensors that feed it information are not working, the pump may not operate.
Common Symptoms of a Fuel Pump Fuse Problem
Knowing the symptoms can help you diagnose the problem before you start pulling fuses. If your 1994 Honda Accord has any of these issues, start by checking the fuel pump fuse:
No start, no fuel pump noise: When you turn the key to the ON position, you should hear a faint humming sound from the rear of the car for about two seconds. This is the fuel pump pressurizing the system. If you hear nothing, the fuse or relay is likely the problem.
Intermittent starting problems: If the car starts sometimes but not others, especially in hot weather, the PGM-FI main relay is the most likely culprit. The solder joints inside the relay can crack over time, causing intermittent failure.
Engine stalls while driving: If the fuel pump fuse blows while you are driving, the engine will stall immediately because the pump stops delivering fuel. This is dangerous and requires immediate attention.
Fuse blows repeatedly: If you replace the fuel pump fuse and it blows again within a short time, you have a short circuit or a failing pump. Do not keep replacing the fuse without finding the root cause.
How to Replace the PGM-FI Main Relay on a 1994 Honda Accord
Replacing the main relay is a straightforward job that takes about 30 minutes. The OEM part number is 39400-SM4-003, and it fits 1994-1997 Honda Accord models.
Step 1: Disconnect the negative battery cable. This prevents accidental shorts and also resets the ECU, which is a good idea after any electrical repair.
Step 2: Remove the lower dash panel on the driver's side. This is the panel below the steering column, which is held in place by a few screws or clips.
Step 3: Locate the PGM-FI main relay. It is mounted to the left of the steering column, often behind the power steering control box. It is a small, black rectangular box with a 7-pin connector.
Step 4: Unplug the wiring harness from the relay. You may need to use a small flat-blade screwdriver to gently pry the relay loose from its mounting bracket.
Step 5: Install the new relay. Plug the new relay into the wiring harness and mount it in the same position. Make sure it clicks securely into place.
Step 6: Reconnect the negative battery cable, replace the lower dash panel, and test the car. Turn the key to the ON position and listen for the fuel pump to prime. If you hear it, the relay is working.
Safety Tips When Working with the Fuse Box
Working with the electrical system of a 1994 Honda Accord is safe if you follow a few basic precautions:
Always disconnect the battery before working on the fuse box, especially if you are replacing high-current fuses or relays. This prevents accidental shorts and potential electrical shocks.
Never replace a fuse with one of a higher amperage. Using a 20-amp fuse where a 15-amp fuse is specified can cause the wiring to overheat and melt, leading to a fire.
Use a fuse puller or pliers to remove fuses. Do not use your fingers, as you could accidentally short the circuit or get shocked.
Keep a selection of spare fuses in your car. The most common sizes for the 1994 Accord are 7.5A, 10A, 15A, 20A, and 30A. Having spares on hand can save you a tow truck call.
The Difference Between the Internal Fuse Box and the Engine Compartment Fuse Box
The 1994 Honda Accord has two fuse boxes: one under the dashboard and one in the engine compartment. It is important to know which one contains the fuel pump fuse.
Internal fuse box (under the dashboard): This is the fuse box that contains the fuel pump fuse (fuse 15, 15A). It also contains fuses for the turn signals, wipers, power windows, SRS, and other interior systems.
Engine compartment fuse box: This fuse box is located on the right side of the engine compartment behind the shock tower. It contains fuses for the headlights, radiator fan, ABS system, and other high-current components. The fuel pump fuse is not in this box.
The engine compartment fuse box also contains a separate ABS fuse box for vehicles with anti-lock brakes. The ABS fuse box is located on the right side of the engine compartment in front of the shock tower.
Why the Fuel Pump Fuse Blows More Often on Older Cars
The 1994 Honda Accord is now over 30 years old, and the wiring and components are subject to age-related degradation. The most common reasons for repeated fuse blows on these older cars include:
Corroded fuse contacts: The metal contacts inside the fuse box can corrode over time, creating resistance and heat. This can cause the fuse to blow even if the circuit is otherwise healthy. Cleaning the contacts with a wire brush or electrical contact cleaner can help.
Deteriorated wiring insulation: The rubber insulation on the wiring harness can become brittle and crack, exposing the bare wire. This is especially common in areas where the wiring rubs against metal parts, such as near the fuel tank or under the dashboard.
Aging fuel pump: The fuel pump itself has a limited lifespan. After 30 years, the internal bearings and brushes are likely worn out, causing the pump to draw more current and blow the fuse.
Previous poor repairs: If someone has worked on the car before, they may have used incorrect fuses, poorly spliced wires, or left connections loose. Any of these can cause the fuse to blow.
Recommended Upgrade: KEMSO Fuel Pump for Your 1994 Honda Accord
If you have determined that the fuel pump itself is the problem, it is time to consider a replacement. For the 1994 Honda Accord, we recommend the KEMSO Fuel Pump. KEMSO offers high-performance fuel pumps that are direct OEM replacements, meaning they fit exactly like the original part and require no modifications to install.
Why choose KEMSO?
- High performance: KEMSO fuel pumps are designed to deliver consistent fuel pressure and flow, ensuring your engine runs smoothly and efficiently.
- OEM replacement: These pumps are built to the exact specifications of the original equipment, so they fit perfectly in your 1994 Accord. No adapters, no cutting, no hassle.
- Lifetime warranty: KEMSO stands behind their products with a lifetime warranty. If your pump ever fails, you get a replacement at no cost. This is the kind of peace of mind you want when working on a 30-year-old car.
Replacing the fuel pump on a 1994 Accord requires dropping the fuel tank, which is a moderately difficult job. If you are not comfortable doing it yourself, a professional mechanic can handle it. But if you do the job yourself, a KEMSO pump will give you years of reliable service.
Visit the KEMSO website at https://www.kemsoracing.com/ to find the right fuel pump for your 1994 Honda Accord. They offer pumps for a wide range of vehicles, including Honda, Acura, and many other makes and models. With KEMSO, you get a product that is backed by a lifetime warranty and a commitment to quality.
Final Thoughts
The 1994 Honda Accord fuel pump fuse is located in the internal fuse box under the driver's side dashboard, and it is a 15-amp fuse labeled as position number 15. If your Accord will not start, check this fuse first. If it is blown, replace it with a new 15-amp fuse. But do not stop there. Find out why it blew in the first place. Common causes include a short circuit, a failing fuel pump, or a clogged fuel filter.
If the fuse is good but the pump still does not run, the PGM-FI main relay is the next thing to check. This relay is located behind the left side of the dashboard and is a common failure point on the 1994 Accord. Replacing the relay is a simple and inexpensive fix that can save you from replacing a perfectly good fuel pump.
Remember, safety first. Always disconnect the battery before working on the electrical system, and never use a fuse with a higher amperage than specified. Keep spare fuses in your car, and do not hesitate to consult a professional if you are unsure about any step.
For more information on fuel pump replacements and other automotive parts, visit https://www.kemsoracing.com/. KEMSO offers high-performance, OEM replacement fuel pumps with a lifetime warranty, giving you the confidence to keep your 1994 Honda Accord on the road for years to come.