Nissan Almera Classic (also known as Nissan Almera N16 or Samsung SM3 in some markets) is a reliable car, but even it has typical problems. One of the most common problems is a sudden engine stop or inability to start caused by a burnt-out fuel pump fuse. If your Almera Classic If it doesn't start, but the starter turns, the first thing you should check is this element.
In this article you will find exact fuse location diagrams, step-by-step instructions for replacing it, as well as tips for diagnosing related problems - from the fuel pump relay to checking the wiring. We will look at the features for different years of production (2006–2012) and engines (1.5L And 1.6L), and we will also tell you why the fuse may burn again and how to avoid it.
Where is the fuel pump fuse located? Nissan Almera Classic
B Almera Classic The fuel pump fuse is located in fuse box, which is located inside the car. The exact location depends on the year of manufacture and configuration, but in 90% of cases it is:
- 🔧 Main fuse box — under the instrument panel on the driver's side (to the left of the steering column). To gain access, you need to open the cover by prying it off with a flat-head screwdriver or your finger.
- 🔋 Additional relay block — next to the main unit or under the hood (rarely). The fuel pump fuse is not located there, but is often located nearby fuel pump relay, which is also worth checking out.
There is usually a diagram with symbols on the fuse box cover. We are looking for a fuse with markings Fuel Pump (or FP) and denomination 15A. For Almera Classic 2006–2012 this is a fuse №28 or №31 (depending on modification).
- Under the instrument panel
- Under the hood
- In the trunk
- I don't know
Attention! On some versions Nissan Almera Classic (for example, with an engine QG15DE) the fuel pump fuse may be in separate unit under the rear seat next to the pump itself. This is rare, but if you don't find it at your dealership, check this option out.
Fuse diagram Nissan Almera Classic (2006–2012)
Below is the current diagram of the fuse block for most modifications Almera Classic. Please note that the location may vary slightly depending on the year of manufacture and market (for example, for Samsung SM3 Korean assembly).
| Fuse no. | Denomination (A) | Purpose | Notes |
|---|---|---|---|
28 |
15A | Fuel Pump | Main fuse for most versions |
31 |
15A | Fuel pump (alternative location) | Found on 2010–2012 models |
17 |
10A | Engine computer (ECU) | If burnt out, it may affect the operation of the pump. |
40 |
10A | Fuel level sensor | Does not affect starting, but is connected to the pump circuit |
If on your Almera Classic the scheme is different, pay attention to fuses with a rating of 15A - there are only 3-4 of them in the block, and one of them is necessarily responsible for the fuel pump. There should also be a relay with markings nearby Fuel Pump Relay (usually black or blue).
How to check the fuel pump fuse: step-by-step instructions
Checking the fuse takes no more than 5 minutes. You will need:
- 🔦 Flashlight (to illuminate the fuse box).
- 🛠️ Tweezers or small pliers (for removing the fuse).
- 🔋 Multimeter or test lamp (optional, for in-depth diagnostics).
Open the fuse box cover
Find fuse No. 28 or No. 31 (15A)
Remove the fuse with tweezers
Visually inspect for broken thread
Install a new fuse (if the old one is blown) -->
Step 1. Open the fuse box cover. It is attached with latches - carefully pry it off with a screwdriver or your finger. There should be a diagram with symbols on the inside of the cover.
Step 2. Find the fuse Fuel Pump (or FP) with denomination 15A. Usually this is fuse number 28 or 31. If there is no diagram, rely on color: 15-amp fuses are usually blue.
Step 3. Remove the fuse with tweezers (it is located in the block) or small pliers. Inspect it in the light: if the metal thread inside is burned out (broken), the fuse needs to be replaced.
⚠️ Attention! If the fuse appears intact, but the problem remains, check it with a multimeter in continuity mode. Sometimes a broken thread is not visually noticeable, but the circuit is open. Also make sure the new fuse has exact rating 15A — installing a fuse with a large amperage can lead to a fire in the wiring!
Why does the fuel pump fuse burn out: the main reasons
If the fuse blows again after replacement, this is a signal of a serious fault in the circuit. Here are the most common reasons:
- ⚡ Short circuit in wiring. Most often it occurs in the wiring harness under the back seat or near the gas tank. Check the insulation for damage (fraying, melting).
- 🔥 Faulty fuel pump. If the pump begins to draw more current (for example, due to worn brushes or seizing), the fuse will blow. Check the pump on the stand or replace it temporarily with a known good one.
- 🔌 Problems with the fuel pump relay. The relay may “stick” or overheat, resulting in current surges. Check the relay (usually it clicks when the ignition is turned on).
- 🛢️ Fuel filter clogged. If the filter is clogged, the pump operates under increased load, which can cause overheating and blown fuse.
On Nissan Almera Classic 2008–2012, a common problem is the oxidation of contacts in the fuel pump connector. This leads to increased resistance and overheating of the circuit, causing the fuse to burn even if the pump is working properly.. The solution is to clean the contacts or replace the connector.
How to check the fuel pump without dismantling?
Turn on the ignition (do not start the engine). You should hear the pump running briefly under the rear seat (buzzing for 2-3 seconds). If there is no sound, the problem is either in the fuse, or in the pump itself, or in the wiring.
Replacing the fuel pump fuse: what you need to know
Replacing a fuse is a simple procedure, but there are several nuances that will help you avoid mistakes:
- Use only a 15A fuse. Installing a fuse with a large rating (for example, 20A) may cause a fire!
- Check the condition of the contacts in the block. If they are oxidized or burnt, sand them with fine sandpaper or treat them with a special spray (for example, Contact Cleaner).
- After replacement, check the operation of the pump. Turn on the ignition and listen - the sound of the pump should be heard for 2-3 seconds.
If after replacement the fuse burns out again, don't install a new one - This may cause damage to the wiring or fire. In this case it is necessary:
- Test the circuit with a multimeter to check for a short circuit.
- Check the fuel pump relay (it should click when the ignition is turned on).
- Inspect the wiring under the rear seat and near the gas tank.
If you don’t have a new fuse at hand and you need to drive urgently, you can temporarily use a fuse with the same rating from another circuit (for example, from the cigarette lighter or radio). But don't forget that this is a temporary solution!
Related Issues: Fuel Pump Relay and Circuit Diagnostics
If the fuse is good, but the fuel pump does not work, the problem may lie in fuel pump relay or broken circuit. The relay is usually located next to the fuse in the mounting block (marking Fuel Pump Relay).
How to check the relay:
- Remove the relay from the block (usually it is black or blue).
- Check the contacts for oxidation or burning.
- Test the relay coil with a multimeter: the resistance should be within
50–120 Ohm. - Apply 12V voltage to the relay contacts (for example, from a battery) - a click should be heard.
If the relay is OK, but the pump does not work, check:
- 🔌 Power supply to fuel pump connector (should be 12V when ignition is on).
- 🔧 Pump weight - often oxidizes on the body under the rear seat.
- 📶 Signal from ECU — if the control unit does not send a command to turn on the pump, the problem may be in the immobilizer or sensors.
If after checking the fuse, relay and wiring the fuel pump still does not work, the most likely reason is failure of the pump itself. On Nissan Almera Classic The service life of a standard pump is about 150–200 thousand km.
FAQ: Frequently asked questions about the fuel pump fuse Nissan Almera Classic
Is it possible to drive without a fuel pump fuse?
No! The fuse protects the circuit from short circuit. If it is removed, the risk of a wiring fire or ECU failure increases significantly. As a last resort, you can temporarily install a fuse with the same rating from another circuit (for example, from heated seats), but only for a trip to the service station.
Why does the fuse burn out immediately after replacement?
This indicates short circuit in the chain. Most often the problem is:
- Wiring under the rear seat (frayed wires).
- Faulty fuel pump (jammed motor or short circuit in the winding).
- Oxidized contacts in the pump connector.
Do not install a new fuse until you find and eliminate the cause!
Where to buy a 15A fuse for Almera Classic?
Standard size fuses (mini block) are sold at any auto store or gas station. Cost - from 10 to 50 rubles. Brand fuses can be used Bosch, Hella or Valeo. The main thing is that the denomination is strictly 15A.
How to check the fuel pump without removing it?
Turn on the ignition (do not start the engine). You should hear the pump running under the rear seat (a humming sound for 2-3 seconds). If there is no sound:
- Check the fuse and relay.
- Make sure there is 12V coming to the pump connector (check with a multimeter).
- Check the pump ground (often oxidizes).
Can the immobilizer block the fuel pump?
Yes, if the immobilizer does not recognize the key or there are problems with its operation, the ECU can block the signal to turn on the fuel pump. In this case, the immobilizer indicator (key) usually lights up or flashes on the dashboard. The solution is to retrain the keys or diagnose the immobilizer.