<em>Nissan Wingroad</em> fuel pump relay: where it is located, how to check and replace it yourself

Nissan Wingroad is a popular compact van known for its reliability, but even it is not immune to problems with the fuel system. One of the weak points of the model (especially generations Y11 And Y12 with engines GA15DE, QG15DE, QG18DE) is fuel pump relay. Its failure leads to the car stalling while driving, not starting, or running intermittently. In this article we will look at how to diagnose a relay malfunction, where it is located in Wingroad different years, and how to replace it without contacting service.

The peculiarity of the problem is that the symptoms of a faulty relay are often confused with a breakdown of the fuel pump itself or the fuse. For example, if when you turn the ignition key you do not hear the characteristic buzz of the pump in the tank, either a burnt-out relay or a blown fuse may be to blame F/P No.15 (15A) in the mounting block. We will help you clearly separate one from the other and save on unnecessary replacement of parts.

Where is the fuel pump relay located in a Nissan Wingroad?

Depending on the year of manufacture and configuration Wingroad the relay can be located in different places. In most cases, you need to look for it in fuse and relay mounting blockwhich is located:

• 📍 To the left of the steering column — under a plastic cover (for models Y11 1996–2005).
• 📍 Under the hood - in the block next to the battery (for Y12 2005–2012 with engines HR15DE/HR16DE).
• 📍 Behind the glove compartment — in an additional block (rare, but found in export versions).

To accurately identify the fuel pump relay, pay attention to its markings. Usually this is:

• 🔧 Relay labeled "Fuel Pump" or “FP” (there may be a diagram on the block cover).
• 🔧 Black or dark gray relay with numbers 25230-4M000, 25230-4M005 (Nissan original).
• 🔧 On some versions - a relay with 5 contacts (unlike 4-pin fan or starter relays).

If there is no diagram on the mounting block cover, use table below or check by pin number: the fuel pump relay is usually connected to contact 87 (power output) and contact 85 (control signal from the ECU).

Signs of a faulty fuel pump relay

Fuel pump relay Nissan Wingroad fails gradually or suddenly. Here are the key symptoms that should alert you:

• ⚠️ The car won't start, but the starter turns. At the same time, you cannot hear the operation of the fuel pump (there is no characteristic hum from the tank when you turn on the ignition).
• ⚠️ The engine stalls while driving and does not start until the relay “cools down” (typical of burnt contacts).
• ⚠️ Interruptions in engine operation: jerks, failures during acceleration, “triple” (associated with unstable fuel supply).
• ⚠️ Smell of gasoline in the cabin - rare, but possible if the relay is “stuck” in the closed state and the pump pumps fuel continuously.

It is important to distinguish relay failure from other problems:

Symptom	Fuel pump relay	fuse	The fuel pump itself
No pump sound when ignition is turned on	✅ Yes (if the relay does not click)	✅ Yes (if the fuse is blown)	✅ Yes (if the pump burns out)
The car stalls while driving and starts after 10-15 minutes	✅ Yes (relay contacts overheat)	❌ No	❌ No (exception: pump overheating)
The engine stalls, but the pump works	❌ No	❌ No	✅ Yes (low fuel pressure)
Fuel pump fuse burns out again after replacement	✅ Possible (short circuit in the relay circuit)	❌ No (unless there is a short circuit in the wiring)	✅ Yes (short circuit in the pump)

Critical moment: if the fuel pump relay is in Wingroad “stuck” in the closed state, the pump will run constantly, even with the ignition off. This leads to overheating of the fuel system and the risk of fire! If this symptom occurs, immediately disconnect the negative terminal of the battery and replace the relay.

How to check the fuel pump relay with your own hands

Relay diagnostics do not require special equipment - a multimeter or even a regular 12V light bulb is enough. Here is a step-by-step algorithm:

1. Remove the relay from the mounting block (you will need a flathead screwdriver or tweezers).
2. Check the fuse (usually 15A, located next to the relay). If it burns out, replace it and check again.
3. Ring relay circuit:
   • 🔌 Pins 85 and 86 - the coil resistance should be 50–120 Ohm.
   • 🔌 Contacts 30 and 87 - in the normal state they are open, when 12V is supplied to 85/86 they should close.
4. Apply power:
   • 💡Connect 12V to contacts 85 (+) And 86 (–) - there should be a click.
   • 💡 Check the contacts with a multimeter in dial mode 30 And 87 - after a click they should close.

Remove the relay from the block|Check the 15A fuse|Ring contacts 85–86 (resistance 50–120 Ohms)|Apply 12V to 85/86 and check the circuit 30/87|Make sure there are no melts on the body-->

If the relay does not click or the contacts do not close, it needs to be replaced. Also inspect the case for melting or burning - This is a sign of a short circuit in the circuit.

⚠️ Attention: Do not attempt to disassemble or clean the relay contacts! It is impossible to restore factory reliability after disassembly, and the risk of a short circuit increases.

Step-by-step instructions for replacing the fuel pump relay

Replacing the relay in Nissan Wingroad takes no more than 10 minutes. You will need:

• 🔧 New relay (original 25230-4M000 or analogues Hella, Bosch, Meat & Doria).
• 🔧 Flat screwdriver or tweezers for removing the relay.
• 🔧 Multimeter (optional, for checking after replacement).

Step 1. Disconnect the negative terminal of the battery (especially if the relay is located under the hood).

Step 2. Remove the mounting block cover. On Wingroad Y11 it is attached with latches, on Y12 - You may need to unscrew 1-2 bolts.

Step 3. Find the fuel pump relay (see. diagram above) and carefully remove it by pulling it up.

Step 4. Install the new relay, making sure the contacts match. Press until you hear a click.

Step 5. Connect the battery and check the system operation:

• 🔑 When the ignition is turned on, the sound of the pump should be heard (2-3 seconds).
• 🚗 Start the car and let it run for 5-10 minutes - if the relay is working properly, the engine will run smoothly.

Cost of a new relay:

• 💰 Original Nissan - 800–1,500 rub. (article 25230-4M000).
• 💰 Analogues (Hella 4RA 003 567-3, Bosch 0 332 019 150) — 300–800 rub..
• 💰 Used from disassembly - 200–500 rub. (risky, because the relay resource is limited).

Fuel pump relay connection diagram

For in-depth diagnostics, it is useful to understand how the relay is integrated into the electrical circuit Wingroad. Below is a simplified diagram for models with an injection system ECCS:

АКБ (+12В)
│
├───→ Предохранитель 15A (F/P No.15)
│      │
│      ├───→ Контакт 30 реле (постоянный +)
│      │
│      Реле бензонасоса (25230-4M000)
│      │
│      ├───→ Контакт 87 (выход на насос)
│      │      │
│      │      └───→ Бензонасос (разъём на баке)
│      │
│      ├───→ Контакт 85 (управление от ЭБУ)
│      │      │
│      │      └───→ ЭБУ (контакт 25 или 26, зависит от года)
│      │
│      └───→ Контакт 86 (масса)
│             │
│             └───→ Кузов (масса)
│
└───→ Главный предохранитель (100A)

Features of the scheme:

• 🔋 Relay receives constant "+" from safety F/P No.15, and control comes from ECU (pin 85).
• 🔋 When the ignition is turned on, the ECU closes the relay circuit for 2-3 seconds to create pressure in the fuel rail.
• 🔋 If the ECU does not receive a signal from crankshaft position sensor, it turns off the relay (protection against flooding of cylinders with gasoline).

How to check the relay control circuit from the ECU?

To do this, you will need a multimeter in voltage measurement mode (20V DC).

1. Disconnect the connector from the fuel pump relay.

2. Turn on the ignition (without starting the engine).

3. Measure the voltage between pin 85 (control wire from the ECU) and ground:

- If there is voltage (about 12V), but the relay does not operate, the problem is in the relay itself or contact 86 (ground).

- If there is no voltage, the ECU is faulty or the wire from the ECU to the relay is broken.

Common mistakes when diagnosing and replacing

Even experienced car owners make mistakes that lead to unnecessary expenses or worsening the problem. That's what can't do:

• ❌ Changing the relay without checking the fuse. In 30% of cases, a blown fuse is to blame. F/P No.15, not a relay.
• ❌ Ignore weight check. Poor contact on the relay ground (pin 86) simulates a relay failure.
• ❌ Install relays from other systems (for example, from a fan). Even if it is externally identical, the current characteristics may differ.
• ❌ Ringing a live circuit. This is dangerous for the multimeter and may cause a short circuit.

Typical example: owner Wingroad Y12 Changes the relay, but the car still won't start. The reason turns out to be broken wire from the computer to pin 85 of the relay, which rubbed against the gas pedal bracket. Always check the entire chain!

⚠️ Attention: If after replacing the relay the fuse F/P No.15 burns out again, there is a short circuit in the circuit. Do not install a fuse with a larger rating - this may cause a fire! You need to check the wiring from the relay to the fuel pump.

Alternative ways to start the engine with a faulty relay

If the fuel pump relay fails on the road and there is no spare one, you can temporarily bypass it by closing the contacts 30 And 87 manually. To do this:

1. Remove the relay from the block.
2. Take a piece of wire or a paper clip and close pins 30 and 87 (see diagram on the unit body).
3. Turn on the ignition - the fuel pump will start working constantly.
4. Start the car. Important: After starting the engine, immediately open the contacts to prevent the pump from running continuously!

This method is only suitable for emergency start. Long-term driving with closed contacts will lead to:

• ⚠️ Overheating of the fuel pump (the resource is reduced by 2-3 times).
• ⚠️ Increased fuel consumption (the pump pumps gasoline even when the ignition is turned off).
• ⚠️ Risk of fire (if the pump does not turn off during an accident).

FAQ: Frequently asked questions about the fuel pump relay in Nissan Wingroad

Is it possible to drive with a faulty fuel pump relay?

Technically it is possible if you close the contacts 30 And 87 manually, but this is dangerous: the pump will work constantly, overheat and may fail. In addition, in the event of an accident, fuel will not stop flowing to the engine, which increases the risk of fire. We recommend replacing the relay as soon as possible.

Which fuel pump relay fits a 2003 Wingroad Y11 with a QG15DE engine?

The original relay is suitable for this model Nissan 25230-4M000 or analogues:

• Hella 4RA 003 567-3 (Germany),
• Bosch 0 332 019 150 (Germany),
• Meat & Doria RLY-103 (Japan).

The main thing is that the relay is 5-pin with switching current not less than 30A.

Why does the fuel pump work after replacing the relay, but the car does not start?

Possible reasons:

1. ECU faulty — does not send a signal to the relay (check the voltage at pin 85 when the ignition is turned on).
2. Fuel filter clogged — the pump pumps, but gasoline does not enter the ramp.
3. Faulty injectors or fuel pressure regulator.
4. Pump power supply circuit open (check the wire from the relay to the tank).

Start by checking fuel rail pressure (norm: 2.5–3.0 kg/cm² for QG15DE/QG18DE).

Where to buy a fuel pump relay for Wingroad at the best price?

Optimal options:

• 🛒 Exist.ru — original and analogues in stock, delivery 1–3 days.
• 🛒 Car disassembly - used relay for 200–500 rub., but without guarantee.
• 🛒 AliExpress - cheap Chinese analogues (150–300 rub.), but the quality is questionable.
• 🛒 Local stores (For example, AutoDetail, IXORA) - original with guarantee.

Advice: Before purchasing, compare the part number on the body of the old relay with the catalog.

Is it possible to repair the fuel pump relay with your own hands?

Theoretically, you can disassemble the relay and clean the burnt contacts, but this is a temporary solution. After cleaning:

• ✅ The relay may still work 1–3 months.
• ❌ The risk of short circuit increases 5 times.
• ❌ The tightness of the case is broken, which leads to oxidation.

Conclusion: Repair is justified only in field conditions. For continuous use, buy a new relay.