1994 Toyota Camry Fuel Pump Relay Location: A Complete Guide to Finding and Testing It
If your 1994 Toyota Camry is cranking but won’t start, the fuel pump relay is one of the first things to check. The fuel pump relay on a 1994 Toyota Camry is located in the engine compartment fuse box, typically near the battery on the driver’s side, and it is the second relay from the right in the bottom row of relays . However, depending on the engine type (such as the 2.2L 5S-FE four-cylinder or the 3.0L V6 1MZ-FE), the exact location and the relay configuration can vary slightly . This guide will walk you through finding the relay, testing it, and what to do if it’s not the problem.
Where to Find the Fuel Pump Relay
The most common location for the fuel pump relay on a 1994 Camry is inside the black plastic fuse box under the hood. Open the hood and look for the fuse box on the driver’s side, near the battery. Remove the cover and examine the diagram on the inside of the lid. You should see a small rectangular relay labeled "FUEL PUMP" or "CIRCUIT OPENING RELAY" . In many cases, this relay is part of a group of relays in the bottom row. If you have the 2.2L engine, the relay is usually in the second position from the right . For V6 models, the layout is similar, but always check the lid diagram to be sure.
If you cannot find the relay in the engine bay fuse box, there is a secondary location. Some 1994 Camry models route the fuel pump relay to the interior fuse box behind the driver’s side knee panel. To access it, remove the panel under the steering column. Look for a relay labeled "FUEL PUMP" or a similar designation . This is less common, but it is worth checking if the engine bay box does not have one.
Understanding the Two Relays in the Fuel Pump Circuit
Your 1994 Camry actually uses two relays to control the fuel pump: the EFI Main Relay and the Circuit Opening Relay (often called the fuel pump relay). The EFI Main Relay is located in the engine compartment fuse box on the left inner fender . It supplies power to the entire fuel injection system. The Circuit Opening Relay is the one that directly controls the fuel pump. On 1994 models, the Circuit Opening Relay is located above the glove box, inside the cabin, behind the passenger side dashboard . This is a key point many owners miss. If you are not getting power to the pump, check both relays.
How to Test the Fuel Pump Relay
Before you replace anything, test the relay. You can do this with a simple multimeter or by swapping it with a known-good relay.
1. The Swap Test: This is the easiest method. Find a relay of the same type in your fuse box, such as the horn relay or the A/C relay. Swap the suspected fuel pump relay with that relay. If the car starts or the fuel pump begins to run, the original relay is faulty . This test works because many relays in the box are identical.
2. The Multimeter Test: Remove the relay. Using an ohmmeter, check the resistance between terminals 85 and 86. You should see a reading of 0 ohms (continuity). Then, check between terminals 87 and 30. The reading should be infinite (no continuity). Next, apply battery voltage to terminals 85 and 86 using jumper wires. When you do this, the resistance between terminals 87 and 30 should drop to 0 ohms . If the relay does not click or the readings are wrong, it is bad.
3. Voltage Check at the Relay Socket: With the ignition key turned to the ON position, use a multimeter to check for 12 volts at the relay socket terminals. If you have 12 volts at the coil side (terminals 85 and 86) but no power at the load side (terminal 87), the relay is likely stuck open or the circuit is broken .
Common Symptoms of a Bad Fuel Pump Relay
A failing fuel pump relay can cause several symptoms. The most obvious is a no-start condition. The engine will crank over normally, but it will not fire because the fuel pump is not getting power. You may also hear a brief whirring sound from the rear of the car when you first turn the key to the ON position. This is the fuel pump priming. If you do not hear this sound, it could be a bad relay, a blown fuse, or a dead pump . Another symptom is intermittent stalling. The relay may work when cold but fail when hot, causing the engine to shut off after driving for a while.
Checking the Fuse First
Before you dive into relay testing, always check the fuel pump fuse. A blown fuse can mimic a bad relay. On the 1994 Camry, the fuel pump is protected by the EFI fuse, which is a 15-amp mini fuse located in the engine compartment fuse box . Look for a fuse labeled "EFI" or "FUEL PUMP." If the fuse is blown, replace it with one of the same amperage. If it blows again immediately, you have a short circuit in the wiring or the pump itself.
The Fuel Pump Diagnostic Connector
There is a handy diagnostic connector under the hood that can help you test the fuel pump directly. On the 1994 Camry, look for a small plastic box near the strut tower, usually on the driver’s side. Inside are terminals labeled "FP" and "B+." Using a short piece of wire or a bent paper clip, connect the FP and B+ terminals. When you turn the ignition key to the ON position, the fuel pump should run continuously. If you hear the pump running but the car still won’t start, the problem is likely elsewhere, such as a clogged fuel filter or a bad pump. If you do not hear the pump, the issue is electrical .
What If the Relay Is Good but the Pump Still Won’t Run?
If the relay tests good and the fuse is fine, the problem may be the fuel pump itself, the wiring, or the ground connection. The fuel pump is located inside the fuel tank. To access it, you will need to remove the rear seat cushion and then the access plate on the floor pan. Before you pull the pump, check for voltage at the pump connector. With the ignition ON, you should see 12 volts on the blue/black wire. Also, make sure the white/black wire has a good ground . If you have voltage and ground, the pump is likely bad. If you do not have voltage, trace the wiring back to the relay and check for breaks or corrosion.
1994 Camry Engine Variations and Relay Differences
The 1994 Camry came with two main engine options: the 2.2L 5S-FE four-cylinder and the 3.0L 1MZ-FE V6. The fuel pump relay location is essentially the same for both engines, but the internal wiring of the fuse box can differ slightly. For the 5S-FE engine, the relay is typically in the bottom row, second from the right . For the 1MZ-FE engine, the layout is similar, but the relay may be labeled differently. Always check the fuse box lid diagram for your specific engine. The V6 models also have a slightly different fuel pump circuit, but the relay itself is the same part.
How to Replace the Fuel Pump Relay
Replacing the relay is a simple job. Once you have located the correct relay, press the small release tab on the side of the relay and pull it straight out of its socket . Insert the new relay in the same orientation. Make sure it clicks into place. There is no need to disconnect the battery for this step, but it is a good safety practice. After replacement, turn the ignition key to the ON position and listen for the fuel pump to prime. If the pump runs, the repair is complete.
When to Call a Professional
If you have checked the relay, the fuse, and the diagnostic connector, and you still have no power to the fuel pump, the problem may be more complex. It could be a faulty ECU (Engine Control Unit), a broken wire in the harness, or a bad ground connection. These issues require specialized diagnostic tools and a wiring diagram. A professional mechanic can test the circuit with a scan tool and a multimeter to pinpoint the exact fault. Do not attempt to bypass the relay or jump the pump for extended periods, as this can damage the pump or cause a fire.
Recommended Fuel Pump Upgrade: KEMSO Fuel Pump
If your diagnosis leads to a bad fuel pump, do not just replace it with a cheap generic part. Consider upgrading to a KEMSO Fuel Pump. KEMSO fuel pumps are designed as high-performance, direct OEM replacement units. They meet or exceed factory specifications, ensuring your engine gets the fuel flow and pressure it needs to perform at its best. Unlike many aftermarket pumps, KEMSO pumps are built to last. They are compatible with E85 fuel and can handle high horsepower applications, making them an excellent choice for daily drivers and performance builds alike.
One of the best features of KEMSO fuel pumps is the lifetime warranty. If your KEMSO pump ever fails due to a manufacturing defect, you get a replacement at no cost. This warranty gives you peace of mind with every mile you drive. The pump is a perfect fit for your 1994 Toyota Camry, and it comes with all necessary installation hardware, including strainers, hoses, and connectors. You do not have to worry about poor fitment or guesswork.
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Final Thoughts
Locating and testing the fuel pump relay on your 1994 Toyota Camry is a straightforward process. Start by checking the engine compartment fuse box, then move to the interior box if needed. Use the fuse box lid diagrams to identify the correct relay. Test the relay with a simple swap test or a multimeter. If the relay and fuse are good, check the diagnostic connector and test the pump directly. If you do need to replace the fuel pump, choose a reliable, high-performance option like a KEMSO fuel pump. It is an investment that will save you time and money in the long run. For more information and to find the right fuel pump for your 1994 Toyota Camry, visit https://www.kemsoracing.com/ today.