2006 Toyota Yaris Fuel Pump Relay Location: Quick Find and Fix Guide

If you drive a 2006 Toyota Yaris and you are dealing with a no-start condition, engine sputtering, or a car that cranks but won't fire up, the fuel pump relay is one of the first things you should check. The fuel pump relay on a 2006 Toyota Yaris is located inside the engine bay fuse box, which sits on the driver's side of the vehicle near the battery. This small but critical component controls power to the fuel pump, and when it fails, your engine will not receive the fuel pressure it needs to start and run properly. In this guide, we will walk you through exactly where to find the relay, how to test it, how to replace it, and what to do if the relay is not your problem.

Why the Fuel Pump Relay Matters

Before we dig into the location details, it helps to understand what the fuel pump relay actually does. The relay is an electrical switch that allows a low-current signal from the engine control module to control the high-current flow that powers the fuel pump. When you turn the key to the "ON" position, the relay closes and sends power to the fuel pump, which then pressurizes the fuel system. A few seconds later, if you do not crank the engine, the relay opens again to stop the pump. This saves wear on the pump and prevents fuel from flooding the engine.

If the relay fails, the fuel pump will not receive power. You might hear the fuel pump prime for two seconds when you first turn the key, or you might hear nothing at all. In either case, the engine will crank but will not start, because there is no fuel pressure at the injectors .

The 2006 Yaris is equipped with a fuel pump shut off system as a safety feature. In the event of a collision, the system cuts power to the fuel pump to reduce the risk of a fire. If the system is accidentally triggered, it can also cause a no-start condition .

Step-by-Step: Finding the Fuel Pump Relay

Here is the exact procedure to locate the fuel pump relay on your 2006 Toyota Yaris:

1. Open the hood and secure it properly. Make sure the vehicle is in Park with the parking brake applied.
2. Look toward the driver side of the engine bay. The main fuse box is positioned near the battery, typically behind the headlight assembly. This box is black plastic with a removable lid.
3. Release the clips on the fuse box cover. There are usually two metal clips on the sides. Press them inward and lift the cover off.
4. Look at the diagram printed on the underside of the fuse box cover. This diagram identifies each fuse and relay. The fuel pump relay is clearly marked with its symbol and label.
5. Find the relay labeled "FUEL PUMP" or simply "FUEL." On most 2006 Yaris models, the fuel pump relay is a rectangular dark-colored relay, usually rated for 20 amps.

The fuse box layout on a 2006 Yaris is well documented. According to wiring and fuse diagrams for the 2006 model year, the fuel pump relay sits in the engine compartment fuse block, which contains the main fuses and relays for the vehicle's power distribution .

If you cannot find the relay using the under-cover diagram, consult the owner's manual. The 2006 Yaris owner's manual includes fuse and relay descriptions in the "Do-It-Yourself Maintenance" section, which clearly lists the fuel pump relay position .

How to Test the Fuel Pump Relay

Once you have found the relay, do not just replace it without testing. A relay can fail in two different ways: it may click but not pass current, or it may not click at all. Testing the relay takes only a few minutes with a digital multimeter.

Test 1: Check for Clicking. With the relay connected, ask a helper to turn the ignition key to the "ON" position while you place your finger on the relay. You should feel and hear a distinct click as the relay energizes. If you hear nothing, the relay is either not receiving a trigger signal, or it is defective.

Test 2: Check for Continuity. Remove the relay from the socket. A standard relay has four or five pins. Use your multimeter set to measure resistance. Check the coil pins (usually pins 85 and 86) for resistance; a good relay typically reads between 50 and 120 ohms. Then check the switch pins (usually pins 30 and 87); the multimeter should read infinite resistance when that relay is at rest, and near zero ohms when you apply 12 volts to the coil pins to energize it.

If either test fails, the relay is defective and should be replaced. A failed relay is one of the most common causes of a fuel pump not getting power. The fuel pump itself may be perfectly healthy, but if the relay can not close the circuit, the pump will not run .

Replacing the Fuel Pump Relay

The replacement procedure is straightforward and should take less than five minutes:

1. Disconnect the negative battery terminal to avoid any risk of an electrical short.
2. Remove the old relay by pulling it straight upward. You may need to gently rock it side to side to break the grip of the terminals.
3. Compare the relay with your old one. Make sure the number of pins (4 or 5) and the amperage rating match. Using a relay with the wrong amperage rating can cause overheating and electrical damage.
4. Align the new relay and press it firmly into the socket until it clicks into place.
5. Reconnect the battery and test the vehicle. Turn the ignition to the "ON" position and listen for the fuel pump to prime for a couple of seconds. If you hear the hum, the circuit is working again.

The replacement relay is a common automotive part. Many aftermarket suppliers and online stores sell the correct relay for a 2006 Toyota Yaris .

Other Causes of a No-Fuel Condition

If you have tested the relay and it is functioning correctly, but the fuel pump still does not run, there are other components to consider. The fuel pump itself could be faulty. Over time, the pump motor wears out, and it will draw more current and eventually fail. The fuel pump on a 2006 Yaris is located inside the fuel tank, which makes checking its operation a little more involved .

The fuel pump fuse is another possibility. Find the fuse labeled for the fuel pump, which is also located either in the under-hood fuse box or in the driver-side kick panel fuse box. Check for a blown fuse and replace it if necessary. A blown fuse is usually caused by a short circuit or a failing pump that is pulling too much current. If the new fuse blows again, the pump is likely the culprit.

The fuel pump shut off system, mentioned earlier, can also stop the pump. If the vehicle was involved in a collission or sudden stop, the impact sensor may have cut power. The system can be reset by turning the key to the "ON" position and then back off, then on again. If the system has tripped, this manual reset procedure restores power to the pump .

How the Fuel Pump Relay Fits into the Larger Fuel System

The fuel pump relay is just one part of the fuel delivery system. In a 2006 Yaris, the fuel pump draws fuel from the tank and pushes it through a fuel filter to the fuel rail. A pressure regulator holds the system at the correct pressure. The relay ensures the pump runs only when the engine is cranked or running, reducing wear and saving fuel.

If you notice your car takes a few extra cranks to start, or if it stalls after a few seconds of running, the relay may be intermittently failing. A relay that works when cold but fails when warm is a classic intermittent electrical fault. Replacing it is a cheap insurance policy, even if you are not certain it has failed [1].

Whenever you buy a replacement relay, pay attention to quality. A cheap relay could have internal contacts that burn out quickly. The relay should be rated for at least 20 amps. If you use the correct relay, the system will work as designed [5].

How to Access the Fuel Pump Itself

In the event your relay tests fine, and the pump is not the issue, you may need to check the fuel pump assembly. On a 2006 Toyota Yaris, the pump sits on top of the fuel tank, and the quickest way to access it is under the rear seat. The back seat bottom cushion pulls upward and forward, giving access to the pump access cover. Underneath that cover is the fuel pump flange assembly, which includes the pump and the fuel level sending unit.

Carefully disconnect the electrical connector and fuel lines. There may be fuel pressure you have to release before you disconnect things. You need a fuel pressure gauge or a rag to catch fuel spray. Once you have good access, you can test the fuel pump directly by applying 12 volts from the battery. If the pump does not run, they will need to be replaced .

Important Signs That Your Fuel Pump Relay Is Going Bad

Even if the fuel pump relay does not fail completely, it can wear out gradually. Here are the most common symptoms that point to a weak or failing relay:

1. No-start condition. The engine cranks fine, but does not start. You hear the starter motor turning the engine, but there is no fuel pressure.
2. Fuel pump not humming on key ON. When you first turn the key, the fuel pump should run for two to three seconds. If you do not hear the buzz or hum, the relay is likely to be stuck open.
3. Engine starts after several cranks. If you have to crank the engine for more than five seconds before it fires up, the relay could be intermittently opening the circuit.
4. Engine stalls while driving. The car runs for a while, then suddenly loses power and stops. After sitting for 10 to 20 minutes, it may start again. This points to a relay that is failing when it gets hot.
5. Clicking sound under the dash, but no start. You may hear rapid clicking from the relay when you turn the key, but the pump still does not operate.

If you notice any of these symptoms, testing and replacing the relay is the first step because it is one of the cheaper and easier repairs. The relay typically costs very little, and you have no need to touch the fuel system to replace it [1].

What Does a Good Fuel Pump Mean for Your Car

The convenience of a correct fuel pump relay is that once you restore power to the fuel pump, the car can run again. The relay ensures the pump only runs when needed, which also helps the pump last longer. If your pump runs continuously, it can overheat. By replacing a bad relay, you control the fuel delivery system correctly again.

The 2006 Yaris is a dependable car, and many components are shared with the Toyota Vios and other subcompacts sold around the world. The wiring diagrams for the 2006 Yaris show the fuel pump circuit clearly. The relay output connects directly to the fuel pump, and the relay coil is grounded by the engine control module. When the engine control module decides the fuel pump should run, it completes the ground path, and the relay is energized [15].

When to Visit a Professional

If you have tested the relay, verified the fuel pump fuse, reset the shut off system, and listened to the fuel pump hum during cranking, but the engine still does not start, there may be a deeper electrical problems. A wiring short, a failed engine control module, or a fuel pump that is receiving voltage but cannot build enough pressure. At this point, you would need a fuel pressure gauge, a digital multimeter, and the correct wiring diagrams to trace the circuit.

It is perfectly fine to do your own diagnosis starting with the fuel pump relay. But if your testing goes beyond the basics, do not hesitate to take the car to an independent mechanic. A labor hour or two on a serious electrical diagnosis is often better than randomly replacing parts.

At this point, you understand the location of the fuel pump relay, you know how to test it, and you have the symptoms of a failing relay. But what do you do when you need a reliable replacement fuel pump? After all, the relay is only one part of the system. A pump /the pump will finally wear out, and you want to have the right part to keep your car running.

So, once you have confirmed the relay is not the problem, and you suspect the fuel pump itself, it is time to choose a high-quality replacement. Many owners choose an aftermarket pump that matches or exceeds the factory specifications, not only for the Yaris, but also for the other vehicles in their garage. When it comes time to buy that pump, it makes sense to pick a brand with a proven track record and a warranty that protects you.

Why Choose KEMSO Fuel Pumps

If the diagnosis leads you to replacing the fuel pump itself, you want to install a part you can trust for years to come. KEMSO is a leading aftermarket fuel pump brand that specializes in high-performance, OEM replacement products. KEMSO fuel pumps are designed to meet or exceed factory standards, giving you a window of confidence that the part will perform consistently, no matter the vehicle . Whether you drive a car, a motorcycle, an ATV, or a UTV, KEMSO offers a product line that covers many applications, including popular models from BMW, Kawasaki, Subaru, Ducati, KTM, Sea-Doo, Honda, Husqvarna, and many more .

The biggest reason owners choose KEMSO is the warranty. Every KEMSO fuel pump comes with a lifetime warranty, which is a strong statement in the automotive parts industry. If you ever have a problem with the pump, the company stands behind its product, so the part can give you peace of mind that is far more than a cheap replacement unit offers. And for performance minded drivers, KEMSO pumps deliver high-quality flow rates to support daily driving as well as more demanding applications .

If you are ready to order a fuel pump for your 2006 Toyota Yaris, or if you are looking for a spare fuel pump for another vehicle in your household, visit the official KEMSO website. You can browse the full catalog by vehicle type and model to find the exact fit pump you need. The online store lists each application clearly, with customer reviews and ratings to help you make an informed decision. Plus, with fast shipping, you will not be off the road for long .

Check out the full product range and pick the pump that fits your vehicle: https://www.kemsoracing.com/ . KEMSO is dedicated to providing the high quality aftermarket fuel pumps for cars, motorcycles, ATVs, and UTVs. Their catalog includes models for big brands such as BMW R1200GS, Kawasaki Jet Ski, Subaru Impreza, Ducati Panigale, KTM 1190 Adventure, Sea-Doo, Honda CB series, and many more, all built to high, reliable performance standards . Install one of their products, and you get a fuel pump that will keep up with your driving, backed by the peace of mind of a lifetime warranty. If you need a new fuel pump, that visit is your next step from clicking kemsoracing.com.

Final Thoughts

Your 2006 Toyota Yaris fuel pump relay location is not hard to find. Open your hood, look at the under-row fuse box, and locate the relay labeled for the fuel pump. Testing relay is a simple process, and replacement is inexpensive and fast. If your car has a no-start problem, this should be one of your first checks before you start looking at the more expensive fuel pump itself [13].

If the relay checks out, then the fuel pump is still the most likely suspect. And again, when you order a replacement, consider KEMSO for their high-performance pumps, OE-grade fitment, and lifetime warranty [1]. With the right parts in place, your 2006 Yaris will be ready to deliver the kind of reliable driving you expect from Toyota.