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

Nissan Almera Classic is a popular sedan known for its reliability, but even it has problems with the fuel system over time. One of the most common malfunctions is the failure of the fuel pump, which is often associated with problems control relay. If the engine does not start, but the starter turns, the first thing to check is this relay.

In this article you will find exact location diagrams of the fuel pump relay for different generations Almera Classic (including B10 And N16), signs of its malfunction, as well as step-by-step instructions for diagnosis and replacement. We will figure out where to look for the fuse box, how to distinguish the pump relay from others, and what to do if it “clicks” but no fuel is supplied.

Fuel pump relay location: diagram and photo

B Nissan Almera Classic The fuel pump relay is in main fuse and relay box, which is located inside the car. The exact location depends on the year of manufacture and modification:

• 📍 Almera Classic B10 (1995–2000) — the block under the dashboard on the driver’s side, behind the plastic cover to the left of the steering column.
• 📍 Almera Classic N16 (2000–2006) — a block in the niche of the front panel, next to the diagnostic connector (usually closed with a cover with the inscription FUSE & RELAY).
• 📍 Restyled versions (2003–2006) — the unit can be moved closer to the center console, under the glove compartment.

To get to the block, follow these steps:

1. Open the driver's door and sit in the seat.
2. Lower the steering column to the lowest position for convenience.
3. Pry off the plastic cover of the fuse box (usually it is secured with two latches).
4. There should be a sticker on the inside of the lid with relay and fuse layout diagram.

If there is no sticker or it has worn off, use the standard layout: the fuel pump relay is usually designated as FUEL PUMP RELAY or FP RELAY and has a black or dark gray body. B Almera Classic N16 it is often found in the top row, third or fourth from the left.

How to distinguish a fuel pump relay from others?

In the fuse box Nissan Almera Classic there may be up to 10–15 relays that are similar in appearance to each other. To avoid confusion, pay attention to:

• 🔍 Markings on the body - look for inscriptions FUEL PUMP, FP or EFI RELAY (on some versions).
• 🔍 Color and shape - the pump relay is usually square (20x20 mm) with 4 contacts, the body is black or dark brown.
• 🔍 Location according to the diagram — there should be a gas station pictogram or inscription on the block cover Pump.

If there is no diagram, use the universal method:

1. Turn on the ignition (without starting the engine).
2. Listen - a working relay should click once every 2-3 seconds (this is a sign of operation).
3. If there is no click, try removing the relay one by one to find the one that makes the sound disappear when removed.

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

If the relay makes a clicking sound, but the fuel pump does not hum, the problem may be:

- open circuit of the pump power supply (check the fuse FUEL PUMP 15A);

- malfunctions of the pump itself (wear of brushes, jamming of the rotor);

- oxidation of contacts in the fuel module connector (located under the rear seat).

Model	Year of manufacture	Relay number in the block	Fuse rating
Almera Classic B10	1995–2000	R12 or R14	15A (FUEL PUMP)
Almera Classic N16	2000–2003	R7	15A (EFI)
Almera Classic N16 (restyle)	2003–2006	R9	20A (FUEL PUMP)

Signs of a faulty fuel pump relay

Fuel pump relay Nissan Almera Classic may fail gradually or suddenly. Common symptoms:

• ⚠️ Engine won't start — the starter turns, but there are no signs of fuel supply (you can’t hear the pump running).
• ⚠️ The engine stalls while driving - especially during sharp acceleration or at high speeds.
• ⚠️ Power Loss — the car “stumbles” and twitches when accelerating.
• ⚠️ Clicking sounds from the relay block — frequent activation (more than once when the ignition is turned on) or complete absence of sound.

It is important to distinguish a relay malfunction from problems with the fuel pump itself or fuse. For example, if you do not hear the pump under the rear seat hum when you turn the ignition key, first check:

1. fuse FUEL PUMP (usually 15–20A) - it may burn out due to a short circuit.
2. The voltage at the relay contacts (should be 12V on the control contact when the ignition is on).
3. Condition of the contacts in the fuel module connector (oxidation or broken wires).

⚠️ Attention: If the fuel pump relay burns out due to a short circuit in the circuit, replacing only the relay will lead to repeated failure. Need to check wiring from the engine control unit (ECU) to the pump for damage.

How to check the fuel pump relay with a multimeter?

To diagnose the relay you will need multimeter (or control lamp) and a screwdriver. Follow the instructions:

Remove the relay from the block|Check the winding resistance (pins 85 and 86)|Apply 12V to the winding and check the closure of pins 30 and 87|Install the relay back and check the output voltage-->

Detailed procedure:

1. Remove the relay from the block (remember its location!).
2. Ring the winding:
   • Connect the multimeter probes to the contacts 85 And 86 (usually these are control pins).
   • Resistance must be within 50–120 Ohm. If it shows 0 (short circuit) or ∞ (break) - the relay is faulty.
3. Check contact activation:
   • Serve 12V from battery to contacts 85 And 86 (polarity is not important).
   • There should be a click and the contacts 30 And 87 should close (checked with a multimeter in continuity mode).
4. Check the output voltage:
   • Install the relay back into the block.
   • Turn on the ignition and measure the voltage between the contact 30 (food) and 87 (output to pump). Must be 12V.

If the relay does not operate or there is no voltage, it must be replaced. Cost of a new relay for Almera Classic — from 300 to 800 rubles (original Nissan 25230-4M000 or analogues Bosch 0332014150).

Step-by-step replacement of the fuel pump relay

Replacing the relay with Nissan Almera Classic takes no more than 5 minutes. You will need:

• 🔧 New relay (preferably original or trusted manufacturer).
• 🔧 Flat screwdriver (for removing the block cover).
• 🔧 Flashlight (to illuminate the fuse box).

Instructions:

1. Disable battery weight (disconnect the negative terminal) - this will prevent a short circuit.
2. Remove the fuse box cover (pry it off with a screwdriver or your fingers).
3. Find the fuel pump relay (refer to the diagram or markings).
4. Carefully remove it by pulling upwards (do not use excessive force to avoid breaking the latches!).
5. Install a new relay same model (pay attention to the location of the contacts!).
6. Close the unit cover and connect the battery.
7. Check the operation of the pump - when you turn on the ignition, you should hear a characteristic hum from under the rear seat.

⚠️ Attention: If after replacing the relay the fuel pump still does not work, check fuse (it may burn out if short circuited) and wiring integrity from the relay to the fuel module. Often the problem lies in the oxidized contacts of the pump connector.

Common mistakes when diagnosing fuel pump relays

Many owners Nissan Almera Classic make typical mistakes that complicate troubleshooting:

• ❌ Checking relay only - they forget about the fuse or the wiring is broken.
• ❌ Using non-original relays - cheap analogues may not withstand the load and burn out quickly.
• ❌ Ignoring clicks - if the relay does not click, the problem may be control unit (ECU) or power circuits.
• ❌ Replacing a pump instead of a relay - many people immediately buy a new fuel pump without checking the relay and fuse.

To avoid unnecessary expenses, follow the algorithm:

1. Check fuse (it's cheaper than a relay!).
2. Make sure the relay clicks when the ignition is turned on.
3. Call power circuit from relay to pump.
4. Only then check fuel pump (for example, by applying voltage to it directly).

If you are not confident in your abilities, contact an electrician - diagnosing the fuel system requires experience, especially if the problem lies in wiring or ECU.

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

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

No. If the relay does not work, fuel does not flow to the engine and the vehicle won't start. In rare cases (for example, when the contacts burn out), the car may start after several attempts, but this leads to relay overheating and risk of fire.

What is the difference between the fuel pump relay on Almera Classic B10 and N16?

On B10 (1995–2000) relays are usually marked FUEL PUMP RELAY and is located in the top row of the block. On N16 (2000–2006) it may be called EFI RELAY and be closer to the center of the block. Also different fuse ratings (15A on B10, 20A on restyled N16).

Why does the relay click but the pump does not pump?

This indicates one of the problems:

• Malfunction the pump itself (wear, jamming).
• Breakage or oxidation wires from relay to pump.
• Malfunction connector fuel module (under the rear seat).
• Problems with mass pump (check the contact on the body).

To determine the exact cause, submit 12V directly to the pump (bypassing the relay) - if it does not work, replacement is required.

Where to buy an original relay for Almera Classic?

Original relay Nissan 25230-4M000 can be found:

• At official dealerships Nissan (original part guarantee).
• In online stores (for example, Exist.ru, Autodoc, Emex).
• In auto parts stores (check by VIN code or car model).

Analogues: Bosch 0332014150, Hella 4RA 003 507-331.

Can the fuel pump relay be repaired or is it just a replacement?

Theoretically, the relay can be disassembled and the contacts cleaned, but this temporary solution. The relay uses thin plates inside that wear out over time, so it may not last long after cleaning. Recommended complete replacement — the cost of a new relay is low (300–800 rubles).