<em>Nissan Almera</em>fuel pump relay: where is it located and how to check it

If your Nissan Almera suddenly stalls or refuses to start, while the starter turns, but the engine does not “catch”, the problem may lie in a faulty fuel pump relay. This small but critical element is responsible for supplying voltage to the fuel pump, and its failure results in a lack of pressure in the system. Unlike a fuse, which will simply blow, a relay can stick, operate intermittently, or fail completely—all of which require different diagnostic approaches.

In this article we will look in detail at where is the fuel pump relay located? Nissan Almera different generations (N16, G15, Classic), how to identify it among other relays in the block, and also give practical advice on checking and replacing. You will learn what tools you will need, how to avoid common mistakes during dismantling, and what to do if a new relay does not solve the problem. Material added unique photos of the fuse box with detailed explanation for each modification Almera, which will save you from having to look for information on other people's forums.

Fuel pump relay location: differences by generation Nissan Almera

The location of the relay depends on the year of manufacture and modification of the car. B Nissan Almera There are three main options for the layout of the fuse box, and mistakenly looking for a relay in the “not your own” block is a common mistake for beginners. Below we will analyze each case with reference to VIN codes and years of production.

On Almera N16 (2000–2006) the fuel pump relay is in main fuse box under the hood, which is located to the left of the battery (when viewed in the direction of travel). The block is closed with a plastic cover with latches - you need to carefully pry it off with a screwdriver so as not to break the latches. The fuel pump relay is labeled here as FUEL PUMP RELAY and has a standard size 12V 40A.

B Almera Classic (2006–2012, index B10) and Almera G15 (2012–2019) the scheme is different: the relay is moved to interior fuse box, which is located under the instrument panel on the driver's side. To gain access you must:

• 🔧 Open the driver's door and remove the decorative cover under the steering wheel (it is attached to two plastic clips).
• 🔦 Use a flashlight to illuminate the area under the panel - the fuse box will be visible immediately behind the plastic casing.
• 📋 On the inside of the block cover there is a diagram with symbols, where the fuel pump relay is marked as FP RELAY.

How to distinguish a fuel pump relay from others: visual signs

In fuse blocks Nissan Almera relays of the same size are installed, but with different markings. The main visual reference is case color: The fuel pump relay is usually black or dark gray, while the radiator fan relay, for example, may be white or blue. However, relying on color alone is dangerous: manufacturers sometimes change suppliers, and shades can vary.

A more reliable way is to check part number, which is stamped on the top of the relay. For Almera The following items are relevant:

Modification	Original number	Analogues (brands)
Almera N16	25230-4M000	Bosch 0 332 014 150, Hella 4RA 003 587-231
Almera Classic (B10)	25230-4M010	Valeo 726543, Febi 11696
Almera G15	25230-4M020	Meat & Doria 88014, ERA 550153

If the number on the relay is erased or missing, pay attention to pin layout: the fuel pump relay has a standard pinout 87, 87a, 86, 85, 30 (contact numbers are usually indicated on the case). To test, you can temporarily swap the relay with a similar size one (for example, a fan relay) to check for a fault.

Signs of a faulty fuel pump relay: when is it time to check

The fuel pump relay rarely fails suddenly - it is usually preceded by indirect symptoms, which drivers often attribute to electronics “glitches” or bad fuel. Here are the key signs that indicate a problem:

• ⚡ The engine starts only after several attempts (the characteristic “buzzing” sound of the pump is absent when the ignition is turned on).
• ⛽ While driving, the car twitches, especially when you press the gas sharply - this is due to interruptions in the fuel supply.
• 🔋 After stopping (for example, at a traffic light), the engine stalls and does not start “hot”, but starts after it cools down.
• 🚗 Lights up on the instrument panel CHECK ENGINE, and the scanner gives an error P0230 (fuel pump circuit malfunction).

It is important to distinguish a relay malfunction from problems with the fuel pump itself or the fuse. For example, if when you turn on the ignition you do not hear the pump running (there is no characteristic hum from under the rear seat), first check fuse F15 (15A) in the block. If it is intact, but the pump is silent, the relay is to blame or the wiring is broken.

What to do if the relay clicks, but the pump does not work?

If the relay makes clicks, but the fuel pump does not turn on, the problem may lie in oxidized relay contacts or a ground break. Try cleaning the contacts with fine sandpaper or replacing the relay with a known good one. If this does not help, check the voltage at the pump connector (should be 12V with the ignition on).

Step-by-step instructions: how to check the fuel pump relay with a multimeter

To diagnose the relay you will need multimeter (or a simple “diagnosis”) and a screwdriver with a thin tip. Follow the algorithm:

1. Remove the relay from the fuse box (carefully pry it up with a screwdriver).
2. Check winding resistance: connect the multimeter probes to the contacts 85 And 86 (they are responsible for the control circuit). Resistance must be within 50–120 Ohm. If the device shows a break or zero, the relay is faulty.
3. Check power circuit contacts: Apply 12V to the contacts 85 And 86 (for example, from a battery through wires). At the same time, contacts 30 And 87 should “close” - this can be checked with a multimeter in dial mode.

If the relay fails at least one of the tests, it must be replaced. Please note: sometimes the relay contacts oxidize or they burn out - in this case they can be cleaned, but such repairs will not last long.

Typical mistakes when replacing a relay and how to avoid them

Even experienced car owners make mistakes when working with the fuel pump relay. Here are the most common ones and how to prevent them:

• 🔌 Mixed up relays: if you install a relay from a fan or headlights instead of a fuel pump relay, this can lead to overheating of the contacts or system failure. Always check the diagram on the unit cover!
• 🛠️ Installation force: Do not press on the relay when installing - it should fit into the socket without effort. If you feel resistance, check if the contact legs are bent.
• 🔋 Ignoring the fuse: If the relay fails due to a short circuit, the new one will burn out immediately after installation. Be sure to check the circuit for short circuit!

⚠️ Attention: On Nissan Almera G15 after 2015, relays with polarized contacts. If you turn the relay upside down during installation, it will not work, but this is not noticeable from the outside. Focus on the “top” mark (usually indicated by an arrow on the unit body).

Another common problem is oxidation of contacts in the block socket. If the new relay operates intermittently, remove it and inspect the socket: if necessary, clean the contacts with alcohol or a special electronics fluid (for example, Contact Cleaner).

What to do if replacing the relay did not help?

If after installing a new relay the fuel pump still does not work, the problem may lie in:

• 🔌 Broken wiring from the relay to the pump (check the circuit with a multimeter, especially in the places where the harnesses are bent under the rear seat).
• 🔋 Malfunctions of the fuel pump itself (brush wear, rotor jamming).
• 📶 Bad mass on the body or fuel tank (the mass attachment point under the rear seat often oxidizes).
• 🔧 ECU malfunctions (rare, but occurs if the unit is “buggy” and does not send a signal to the relay).

To diagnose the wiring, disconnect the fuel pump connector (it is located under the rear seat, under the carpet) and check for the presence of 12V on one of the contacts when the ignition is on. If there is no voltage, the problem is in the circuit from the relay to the pump. If there is voltage, but the pump does not work, the pump itself or its connector is to blame.

FAQ: Frequently asked questions about the fuel pump relay Nissan Almera

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

Technically possible, but highly undesirable. If the relay operates intermittently, the engine will stall while driving, which is dangerous in city traffic. In addition, unstable fuel supply can lead to catalyst overheating or failure of injectors.

How much does a fuel pump relay cost? Almera?

Price of the original relay (article number 25230-4M020 for G15) - about 800–1200 rubles. Analogues from Bosch or Hella will cost 400–700 rubles. Buy only from trusted stores: fakes often have unreliable contacts that burn out after 1–2 months.

How to test a relay without a multimeter?

Can be used replacement method: temporarily replace the fuel pump relay with a known-good relay with similar contacts (for example, from a radiator fan). If the pump starts working after replacement, your relay is faulty. If not, the problem is different.

What happens if you install a relay with a higher current (for example, 50A instead of 40A)?

High rated relay physically fit, but this risks overheating the contacts in the fuse box. In emergency cases, you can temporarily use such a relay, but for permanent operation, buy a part with the original rating.

Where can I find a fuse box diagram for my Almera?

The diagram is usually printed on the inside of the block cover. If it is missing or has been erased, download the manual for your model on the website Nissan TechInfo (vehicle VIN required) or search on forums Drive2 or AlmeraClub.