The problem of a sudden engine stop while driving or a car failing to start often comes down to one small detail - a blown fuse. Owners Nissan Almera new generation (G15 body) are often faced with a situation where the gas pump stops supplying fuel and the car does not start. In most cases, the reason lies precisely in the electrical power supply circuit of the fuel system, and not in the breakdown of the pump itself.
For quick diagnostics, it is necessary to know exactly the location of the protective element. On cars of this model, the electrical circuit is quite simple, but access to some components may be difficult. If you are faced with the fact that the engine is silent when you try to start, the first thing you should check is the power circuit fuel pump, since this is the most common cause of such symptoms in Nissan Almera G15.
Location of the fuse box in the engine compartment
The main fuse box, where the fuel pump circuit protection is located, is located in the engine compartment. You need to open the hood and find a black plastic box with the inscription FUSE AND RELAY BOX on the lid. It is located on the right side (if you look in the direction of travel), closer to the windshield, next to the battery.
Opening the cover of the unit, you will find many fuse links of different ratings. For an accurate search, you need to focus on the diagram pasted on the inside of the lid. Carefully inspect the markings, as the location of the elements may differ slightly depending on the year of manufacture Nissan Almera and configurations.
- 🔍 Look for the designation
FUEL PUMPorFPon the block diagram. - ⚡ Usually this is a 15A or 20A fuse, made in the form of a plastic plug.
- 🔧 You will need a special clamp (tweezers), which often comes complete with the block.
Secondary fuse box in the passenger compartment
In addition to the main unit under the hood, on Nissan Almera G15 There is an additional unit located inside the car. It is located under the instrument panel, on the left side of the steering wheel. To access it, you need to open the unit door or carefully remove the plastic plug.
Sometimes the connection diagram can duplicate the protection functions, or there is a control relay here, which is closely related to the operation of the fuel pump. If all the fuses under the hood are intact, check this second unit. Do not forget to turn off the ignition before this to avoid a short circuit when manipulating the contacts.
- 🚗 The block in the interior is often hidden behind a decorative trim that needs to be pryed off with a screwdriver.
- 🔌 There may be relays here that are responsible for turning on the fuel system when you turn the key.
- 📋 Check the location of the relay legs with the operating instructions or the diagram on the cover.
⚠️ Caution: Before removing any fuse or relay, be sure to turn the ignition key to
OFFand make sure that all electrical consumers are turned off. Ignoring this rule may result in failure of the electronic engine control unit (ECU).
- 2012-2014
- 2015-2017
- 2018-2020
- 2021 and newer
How to identify a blown fuse visually
After you have found the desired element according to the diagram, it must be removed and carefully inspected. Visual diagnostics are the fastest way to confirm a problem. Take the fuse and hold its clear plastic housing up to the light.
A complete fuse has a continuous metal bridge inside that appears as a solid arc or straight line. If you see a break in this jumper, melted metal or blackening around the contacts, it means fuse blown and requires immediate replacement.
- 💡 Use a flashlight or daylight for a better view of the inner insert.
- 🔨 Do not try to fix a burnt-out element with tape or tape - this is dangerous.
- 🔄 Always have a spare set of fuses of different ratings in the glove compartment.
Step-by-step instructions for replacing an element
The replacement process is extremely simple and does not require special tools other than tweezers for removal. First, remove the burnt element using a plastic clip or regular insulated-handled pliers (be careful not to damage adjacent contacts). Then insert the new fuse exactly into the same socket.
It is important to use an element with exactly the same rating (amperage) as the old one. If you install a fuse with a lower rating, it will blow again at the first load. If the rating is higher, this may lead to a fire in the wiring during a short circuit, since the protection will not work in time.
☑️ Procedure for replacing the fuse
Reasons for frequent fuse blowouts
If you replace a fuse and it blows again within a short time, there is a serious problem with the electrical circuit. Simply replacing the element will not help here, but will only delay the problem. Most often, the cause is a short circuit in the wiring or mechanical failure of the fuel pump itself.
Perhaps the fuel pump motor armature is jammed due to dirty fuel filter or worn brushes. In this case, the pump motor consumes a current exceeding the fuse rating, which leads to its immediate burnout. It is also worth checking the integrity of the insulation of the wires going to the fuel tank.
⚠️ Attention: If a new fuse blows immediately after installation, it is strictly forbidden to install an element with an overrated rating or a wire jumper. This is guaranteed to lead to a wiring fire in the engine compartment or inside the cabin.
Scheme and ratings of protective elements
For convenience, we have collected basic information about fuses related to the fuel system Nissan Almera G15 to the table. Please note that numbering may vary slightly depending on the year of manufacture of the vehicle.
| Designation | Denomination (A) | Purpose | Location |
|---|---|---|---|
| FP | 15 | Fuel pump (main) | Block under the hood |
| FUEL | 20 | Fuel pump relay | Block under the hood |
| ECU | 10 | Electronic control unit | Block in the cabin |
| IGN | 15 | Ignition switch | Block in the cabin |
What to do if the fuse is intact and the pump does not work?
If the fuse is visually intact, but the pump does not hum when the ignition is turned on, the problem may be in the relay. Try swapping the relay with a similar one (for example, a headlight relay) to check its functionality. It is also possible that the contacts in the connector of the pump itself, which is located under the rear seat, may oxidize.
Relay and wiring diagnostics
Sometimes the problem is not the fuse itself, but the relay that controls the power supply to the fuel pump. The relay is an electromagnetic switch and its contacts may burn or stick. On Nissan Almera The fuel pump relay is usually located in the same box under the hood as the fuses.
You can try replacing the relay with a known good one, taking a similar one from another circuit (for example, from a cooling fan, if they have the same case and pinout). If after replacing the relay the pump starts working, then that was the problem. It is also worth checking the connectors for oxidation.
- 🔊 Listen to the sound: when you turn on the ignition, you should hear the characteristic hum of the pump for 2-3 seconds.
- 🔌 Check the pump connection under the rear seat for moisture or rust.
- 📏 Measure the voltage at the pump contacts with a multimeter with the ignition on.
Before removing the rear seat to check the fuel pump connector, blow off dust from the junction of the upholstery and the floor to prevent dirt from getting inside the fuel tank if the hatch is accidentally opened.
Indirect signs of a circuit malfunction
In addition to the engine stopping completely, there are symptoms that may indicate problems with the fuel pump even before it completely fails. The car may stall at idle or when you press the gas pedal sharply if the voltage at the pump is unstable.
Also pay attention to the Check Engine light. If this indicator lights up on the dashboard and the scanner shows an error in fuel rail pressure or no signal from the throttle position sensor (due to a lean mixture), the cause may be a poor connection in the pump power circuit.
Regularly checking the condition of the fuses and the cleanliness of the contacts in the electrical connectors is the key to long-term operation of the fuel system and the absence of sudden engine stops along the way.
FAQ: Frequently asked questions
Where exactly is the fuel pump fuse located on a 2014 Nissan Almera G15?
It is located in the main fuse box under the hood, usually marked FP or FUEL PUMP. The exact location is indicated in the diagram on the inside of the cover of this unit.
What should I do if the new fuse burns out immediately?
This indicates a short circuit in the wiring or a jammed fuel pump motor. Do not install a fuse with a high rating. A complete diagnosis of the wiring and the pump itself is necessary.
Is it possible to start the engine without a fuel pump fuse?
No, the engine will not be able to start because the fuel pump will not create the necessary pressure in the system. The car will try to catch, but will not start.
Do I need to remove the battery before replacing the fuse?
It is advisable to disconnect the battery terminal to avoid an accidental short circuit when removing or inserting a cell, although the risk is minimal with the ignition off.
What tool is needed for replacement?
Usually there is a special plastic tweezer in the fuse box. If it is not there, you can use ordinary tweezers with insulated handles, but without fanaticism, so as not to break the plastic.