1999 Mitsubishi Mirage Fuel Pump Relay Location: A Complete Guide for DIY Diagnosis and Repair
Here is the bottom line: On a 1999 Mitsubishi Mirage, the fuel pump relay is located behind the center console, mounted on a metal plate alongside the multiport fuel injection relay. If your Mirage cranks but won't start, this relay is often the first thing to check before you start replacing more expensive parts like the fuel pump itself.
The 1999 Mitsubishi Mirage is a reliable compact car, but like any vehicle, it can develop electrical issues over time. One of the most common problems owners face is a no-start condition caused by a failing fuel pump relay. This guide will walk you through everything you need to know about locating, testing, and replacing the fuel pump relay on your 1999 Mirage.
Where Is the Fuel Pump Relay on a 1999 Mitsubishi Mirage?
The fuel pump relay on a 1999 Mitsubishi Mirage is located inside the passenger cabin, behind the center console. Specifically, it is mounted on a small metal bracket near the area where the center console meets the dashboard. This relay works together with the multiport fuel injection (MFI) relay, and they are often attached to the same bracket.
For 1999 models, the relay is not under the hood. Many owners mistakenly look in the engine compartment fuse box first, but the fuel pump relay on this generation Mirage is inside the car. The relay is a small, black plastic component with a wiring harness plugged into its underside.
Step-by-Step to Access the Relay
- Remove the lower center console panel. Look near the gas pedal area, below the radio. There is a small panel that covers the bottom part of the center dash. This panel is held in place by one screw and one push-point retainer.
- Remove the screw and release the push retainer. Pull the bottom left corner of the panel toward the gas pedal, then pull down on the panel at the same time. This will give you access to the area behind the panel.
- Use a mirror to see behind the panel. The space is tight. A small inspection mirror helps you locate the two wiring clips attached to the relays. The fuel pump relay and the MFI relay are mounted on a plate secured by a single 10mm bolt.
- Remove the 10mm bolt. Once the bolt is removed, the plate with both relays comes out. The fuel pump relay is the one specifically controlling the fuel pump circuit.
How to Test the Fuel Pump Relay
Before you buy a new relay, it is smart to test the existing one. A bad relay is a common failure point, but it is not the only possible cause of a no-start condition.
The Click Test
Turn the ignition key to the "ON" position without cranking the engine. Listen carefully near the center console area. You should hear a distinct click sound from the relay. This click means the relay coil is energizing and the contacts are closing. If you hear no click, the relay coil is likely burned out or the control signal from the ECU is missing.
The Swap Test
The easiest way to confirm a bad relay is to swap it with a known good relay. The fuel pump relay is often identical to the multiport fuel injection relay mounted next to it. Swap the two relays. If the car starts after the swap, the original fuel pump relay was faulty.
Visual Inspection
Remove the relay and look at the plastic housing. Cracks, melting, or corrosion on the terminals are signs of failure. Also check the relay socket for corrosion or burnt pins.
Other Common Causes of No Fuel Delivery
If the relay tests good but your car still won't start, the problem could be elsewhere in the fuel system.
Check the Main Fuses
The 1999 Mirage has a 100 amp main fuse in the engine compartment fuse box. Although it is not labeled specifically for the fuel pump, if this fuse blows, the fuel pump will not run. Also check the dedicated fuel pump fuse under the dash. On the 1999 model, the fuel pump circuit is protected by a fuse labeled "Dedicated fuse 6 15a" in the engine compartment relay box.
Test the Fuel Pump Itself
The fuel pump on a 1999 Mirage is located inside the fuel tank. You can access it through an inspection panel under the rear seat. Some owners report that you can reach the pump by removing the rear seat cushion and looking for a trap door. If the pump is dead, you will need to either drop the fuel tank or use the access panel to replace it.
Check the Fuel Pump Ground
A bad ground connection can cause the fuel pump to operate intermittently or not at all. The ground points for the fuel pump circuit are typically located on the front floor crossmember and at the right kick panel. Clean these ground connections and ensure they are tight.
Symptoms of a Bad Fuel Pump Relay
How do you know if the relay is the problem? Look for these signs:
- Engine cranks but does not start. This is the most common symptom. The starter motor turns the engine over, but the fuel pump never activates.
- No fuel pump priming sound. When you turn the key to "ON," you should hear a brief whirring sound from the fuel pump in the rear of the car. If you do not hear this sound, the relay or the pump is not getting power.
- Car starts intermittently. Sometimes the relay contacts work, sometimes they do not. This can cause the car to start one day and fail the next.
- Engine dies shortly after starting. If the relay fails while driving, the engine will stall and will not restart.
How to Replace the Fuel Pump Relay
Replacing the fuel pump relay on a 1999 Mitsubishi Mirage is a straightforward job. Here is what you need to do.
- Disconnect the battery negative terminal. This prevents any accidental short circuits while you work.
- Access the relay as described above. Remove the lower center console panel and locate the relay plate.
- Unplug the old relay. Gently pull the relay straight up out of its socket. Do not twist or pry it.
- Plug in the new relay. Push it down firmly until you feel it click into place.
- Reinstall the mounting plate and panel. Secure the 10mm bolt and snap the lower panel back into position.
- Reconnect the battery. Turn the key to "ON" and listen for the fuel pump prime. Then try to start the car.
When to Replace the Fuel Pump Instead of the Relay
Sometimes the relay is fine, but the pump itself has failed. If the relay clicks, and you have power at the relay output, but the pump does not run, the pump is likely dead. The fuel pump is located inside the fuel tank. To replace it, you will need to drop the fuel tank or access it through the inspection panel under the rear seat.
The fuel pump on a 1999 Mirage is a wear item. Over time, the internal electric motor wears out, the check valve fails, or the strainer becomes clogged. If you are already dropping the tank to replace the pump, it is a good idea to replace the fuel filter and the fuel pump relay at the same time.
Recommended Fuel Pump for Your 1999 Mitsubishi Mirage
If you determine that your fuel pump needs to be replaced, you want a part that is reliable, durable, and backed by a solid warranty. For your 1999 Mitsubishi Mirage, we recommend the KEMSO Fuel Pump.
KEMSO fuel pumps are high-performance, OEM replacement units designed to meet or exceed the original equipment specifications. Every KEMSO pump is tested for durability and built to deliver consistent fuel pressure, ensuring your Mirage runs smoothly and reliably. The best part is that every KEMSO fuel pump comes with a lifetime warranty — KEMSO stands behind their products with confidence, backed by their promise to fuel your adventure.
When you choose KEMSO, you are choosing a product that is built to last. Visit KEMSO Racing today to find the perfect fuel pump for your 1999 Mitsubishi Mirage:
Frequently Asked Questions
Can I use a universal relay for my 1999 Mirage?
It is best to use the exact relay specified for your vehicle. Universal relays may have different pin configurations or current ratings, which could cause problems. Stick with a direct replacement relay.
How much does a fuel pump relay cost?
A replacement fuel pump relay for a 1999 Mirage typically costs between $10 and $20. This is a very inexpensive part, making it worth replacing as a first step when diagnosing a no-start condition.
Where is the fuel pump fuse located?
The fuel pump fuse is located in the engine compartment relay box. It is labeled as "Dedicated fuse 6 15a" on the fuse box cover. There is also a 100 amp main fuse in the engine compartment fuse box that can affect the fuel pump circuit if it blows.
Will a bad fuel pump relay cause the check engine light to come on?
In many cases, a bad fuel pump relay will not trigger the check engine light. The ECU may not detect a loss of fuel pressure as a fault code. However, if the car stalls while driving, the ECU may store a code related to a lean condition or misfire.
How long does a fuel pump relay last?
There is no set lifespan for a fuel pump relay. They can last the entire life of the car, or they can fail after a few years. Heat, vibration, and corrosion are the main factors that shorten relay life. If you own a 20-year-old Mirage, replacing the relay as preventive maintenance is a smart move.
Final Thoughts
The 1999 Mitsubishi Mirage fuel pump relay location is behind the center console, mounted on a plate with the multiport fuel injection relay. If your car cranks but will not start, checking the relay should be one of the first diagnostic steps. The relay is inexpensive and easy to replace, and doing so can save you the time and expense of more complex repairs.
Remember to test the relay first by listening for the click or swapping it with the MFI relay. Also check the main fuses and the fuel pump ground points. If the relay and fuses are good but you still have no fuel, the pump itself may be bad. Access the pump through the inspection panel under the rear seat for replacement.
For a high-quality replacement fuel pump, trust KEMSO. Their products are backed by a lifetime warranty and are designed to deliver reliable performance. Visit https://www.kemsoracing.com/ for more information and to find the perfect fuel pump for your 1999 Mitsubishi Mirage.