Nissan Almera Classic (also known as Samsung SM3 in some markets) remains one of the most popular budget foreign cars on the secondary market due to its simplicity of design and availability of spare parts. However, even in this reliable car, electrical problems occasionally arise - from non-functioning headlights to cigarette lighter failure. In 90% of cases, a blown fuse or faulty relay is to blame.

In this article you will find complete fuse and relay diagram for Almera Classic (body B10 And G15, 2006–2018), including the location of the mounting blocks, decoding of each element by number and step-by-step diagnostic instructions. We will also look at common mistakes when replacing fuses, which can lead to a short circuit or fire in the wiring.

Where are the fuse boxes in the Nissan Almera Classic?

B Almera Classic There are two main mounting blocks:

  • 🔧 Main fuse and relay box — located in the cabin, under the instrument panel on the driver’s side. To gain access, you need to open the cover (it is secured with two latches).
  • ⚡ Relay and fuse box in the engine compartment — located next to the battery, under a plastic cover (on some modifications it can be hidden under the air duct).

On vehicles with 1.4 And 1.6 liter engines (GA14DE And GA16DE) the block diagram is identical, but on versions with air conditioning or ABS, additional relays are added. For example, the air conditioning compressor relay is usually labeled as R12 and is located in the engine compartment.

Important: on restyled models (after 2012), the location of the relay may differ heated rear window And cooling fan. If your car was manufactured after 2013, check the table at the end of the article.

📊 Where do your fuses blow most often?
  • In the salon block
  • In the engine compartment
  • Equally often
  • I don't know where to look

Diagram and decoding of the cabin unit fuses

The cabin unit contains most of the fuses responsible for lighting, instrument panel, audio system and comfort functions. Below is a standard diagram for Almera Classic 2006–2018 (dorestayl and restayl).

Number Ampere Purpose Notes
F1 10A Side light bulbs (left side) Also responsible for the license plate illumination
F5 15A Low beam (right headlight) If the lamp burns out, check the lamp - often the cause is a short circuit in the socket
F10 7.5A Cigarette lighter, 12V socket On versions with audio preparation, this fuse also powers the radio
F15 10A Electric windows If all the windows stop working, check the relay R4
F20 10A Instrument cluster, speedometer, tachometer If this fuse burns out, the panel backlight may go out.

Full diagram with numbers F1–F30 And R1–R15 you can download by link at the end of the article. Please note: on vehicles with ABS fuse is added F25 (10A), responsible for the system control unit.

⚠️ Attention: Fuse F10 (7.5A) - one of the most vulnerable places in Almera Classic. It is often replaced with a more powerful one (for example, 15A), which leads to melting wiring cigarette lighter. If it burns out more than once a month, look for a short circuit in the circuit!

Engine compartment: high power relays and fuses

In the engine compartment there are elements responsible for power electrics: cooling fan, starter, fuel pump and generator. High power fuses are used here (from 20A to 100A), as well as relays marked R10–R20.

Key elements of the engine compartment:

  • 🔥 F30 (30A) — Electric cooling fan. When burned, the engine will overheat.
  • ⚡ F35 (15A) — Fuel pump. If this fuse is blown, the car will not start.
  • 🔋 R10 — Starter relay. A common cause of “clicking” noises when turning the key without starting the engine.
  • ❄️ R12 (restyle) — A/C compressor relay. May be absent on pre-restyle.

Features of the engine compartment - lack of protection from moisture. After washing the engine or rain, the contacts may oxidize, which leads to false tripping of the fuses. It is recommended to clean the blocks from dirt and treat the contacts once a year WD-40.

☑️ Diagnostics of the engine compartment

Done: 0 / 4

How to check and replace a fuse: step-by-step instructions

To check and replace fuses you will need:

  • 🔧 Tweezers (usually included with the car).
  • 🔦 Flashlight (for inspecting contacts).
  • 📊 Multimeter (optional, but will help diagnose a short circuit).

Step 1: Turn off the power.

Remove the key from the ignition and disconnect the negative terminal of the battery. This will prevent a short circuit when removing the fuse.

Step 2: Find the blown fuse.

Visually inspect the plastic housing: a blown fuse will have broken thread or blackened contacts. If you can’t determine it visually, use a multimeter in dial mode.

Step 3: Replace the fuse.

Use tweezers to remove the faulty element. Install a new fuse same denomination (amperage is indicated on the body). Do not install wire bugs under any circumstances - this may lead to fire!

⚠️ Attention: If a new fuse burns out immediately after installation, there is a short circuit. Do not attempt to replace it again, but contact an auto electrician to diagnose the wiring.
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If you don’t have a multimeter at hand, you can check the fuse “for a spark”: touch it to the positive terminal of the battery - if it is working, a small spark will jump between the contacts.

Typical fuse problems and their solutions

Owners Almera Classic often encounter repeated faults related to fuses. Here are the most common cases and how to resolve them:

1. The cigarette lighter fuse constantly burns out (F10)

Reasons:

  • 🔌 Using powerful devices (for example, a car vacuum cleaner or compressor).
  • 🔥 Short circuit in the cigarette lighter wiring (often after unqualified installation of the alarm).
  • 🎵 Audio system malfunction (if the radio is connected to this fuse).

Solution: Disconnect all devices from the cigarette lighter and check the circuit with a multimeter. If the fuse blows again, look for a short in the wiring harness under the dashboard.

2. Power windows don't work

Reasons:

  • ⚡ Fuse burned out F15 (10A) or relay R4.
  • 🔧 Wear and tear of the window lift mechanism (increased load causes the protection to be triggered).
  • 💧 Moisture gets into the control unit (on the driver's door).

Solution: Check the fuse and relay. If they are working properly, lubricate the glass guides and check the operation of the mechanism manually (with the power off).

3. Low beam does not work

Reasons:

  • 💡 Bulbs in both headlights burned out (unlikely, but possible).
  • 🔌 Fuse burned out F5 (15A) or F6 (15A) (left/right headlight).
  • 🔄 Low beam relay faulty (R7).

Solution: Replace fuses and relays. If the problem persists, check the lamps and contacts in the sockets. On Almera Classic Headlight connectors often oxidize.

What to do if the fuel pump fuse blows?

If the fuse F35 (15A) burns out when trying to start the car, the cause may be:

1) Short circuit in the fuel pump circuit (check the wiring under the rear seat).

2) Malfunction of the pump itself (it can “jam” and consume increased current).

3) Problems with the pump relay (R15).


Workaround: you can install a 20A fuse, but only to get to the service station! Driving for a long time with a faulty fuel pump circuit is dangerous!

Differences in the fuse circuits of dorestayl and restayl

Nissan Almera Classic underwent restyling in 2012, which affected the electrical circuit. Main changes:

element Dorestyle (2006–2012) Restyle (2012–2018)
Heated rear window relay R8 (in the salon block) R18 (in the engine compartment)
ABS fuse None (ABS option) F25 (10A) (on versions with ABS)
Cooling fan relay R10 (single) R10 And R11 (double, for two speeds)
Radio fuse Separate F22 (10A) Combined with cigarette lighter (F10)

If you are not sure about the version of your car, please take a look at VIN number:

  • Dorestyle: LSFAB10* or LSFGB10*.
  • Restyle: LSFAB10*8 or LSFGB10*8 (eight on the 8th symbol).

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On restyled Almera Classic after 2013 fuse F10 became a “weak link” due to the combination of the cigarette lighter and radio circuits. If you use chargers frequently, it is recommended to install an additional power strip with a separate fuse.

Frequently asked questions about Nissan Almera Classic fuses

Which fuse is responsible for the stove (heater)?

For the operation of the stove in Almera Classic fuse responds F28 (20A) in the salon block. If the stove is not working, also check:

  • Heater fan relay (R9).
  • Speed switch (contacts often oxidize).
  • fuse F2 (10A) — it is responsible for illuminating the climate control buttons.
Is it possible to install a fuse of a higher rating?

No, this is extremely dangerous! Each fuse is designed for maximum current, which the wiring can withstand. For example, if instead F10 (7.5A) put 15A, if there is a short circuit, the wires may melt or catch fire. An exception is a temporary replacement for diagnostic purposes (for example, 20A instead of 15A), but only for a short time!

Where can I download the complete fuse diagram in good quality?

The official diagram can be found:

Please note: on some “left” resources, the diagrams may be incorrect, especially for restyled models!

Why does it blow again after replacing the fuse?

This means that the circuit has short circuit. The most common reasons:

  • 🔌 Damage to wire insulation (for example, under the driver's mat or in the doors).
  • 💡 Consumer malfunction (for example, a jammed window lifter motor).
  • 🔋 Problems with the “ground” (poor contact on the body).

For diagnostics, disconnect all consumers in the circuit and check with a multimeter in the 200Ω. If the short circuit remains, look for a damaged wire.

How to check the relay in Almera Classic?

The relay is tested in two ways:

  1. By ear: When activated, a working relay makes a clicking sound. For example, fan relay (R10) should click when the engine warms up.
  2. Multimeter:
    • Ring the winding resistance (contacts 85 And 86) - must be 50–120 Ω.
    • Serve 12V on the winding - contacts 30 And 87 must close.

If the relay is faulty, replace it with a similar one (for example, R10 can be temporarily changed from R11, if they are the same).