Fuse diagram of <em>Nissan Almera Classic</em>: location of blocks, assignment and replacement

Nissan Almera Classic (also known as Nissan Almera N16 or B10 depending on market) is a reliable sedan, but even its electrical circuits require attention. Fuses protect the on-board network from overloads, and their failure can paralyze the operation of headlights, power windows, or even the engine. In this article you will find detailed fuse box diagrams for Almera Classic (2006–2012), their location, the purpose of each element and step-by-step instructions for replacement.

We'll sort it out two main mounting blocks: interior (located to the left of the steering wheel) and engine compartment (next to the battery), as well as separate relays responsible for critical systems. We will pay special attention fuse No. 10 (15A) in the cabin unit - it is responsible for the operation of the engine ECU, and its burnout can simulate serious malfunctions. If your appliances stop working or the check light comes on, check this particular element first.

Where are the fuse boxes located in Nissan Almera Classic

B Almera Classic provided three zones for fuse and relay locations:

• 🚗 Salon block - under the instrument panel, to the left of the steering column. To gain access, you need to unclip the plastic cover (it is secured with two latches).
• 🔋 Engine compartment block — next to the battery, in a plastic box with a lid. It is often confused with the injection system relay block, which is located nearby.
• ⚡ Additional relays - Some relays (for example, the main fuel pump relay) may be located under the center console or behind the glove compartment.

The most popular - salon unit, since he is responsible for lighting, audio system and electrical accessories. The engine compartment is often checked if there are problems with the cooling fan or starter. Please note: on models with 1.5 liter QG15DE engine And 1.8-liter QG18DE the arrangement of the blocks is identical, but the fuse ratings may differ (for example, for the injection system).

Interior fuse box diagram: decoding by numbers

The salon unit contains 30 fuses and 10 relays. Below is a table with the purpose of each element for Nissan Almera Classic (valid for models 2006–2012). Please note that the numbering begins from left to right, and ratings are indicated in amperes (A).

Fuse no.	Denomination (A)	Purpose	Symptoms of a problem
1	10	Side light (left side), license plate light	The left side lights or license plate lights do not light up
5	10	Low beam (right headlight)	The low beam on the right doesn't work, but the high beam works fine
10	15	Engine ECU, immobilizer, fuel injectors	The engine does not start, the check light is on, errors P0300-P0304
15	10	Audio system, cigarette lighter	The radio or cigarette lighter does not work, the USB port is burned out
25	20	Window lifters (all four)	The power windows don't work, the relay clicks, but there is no movement.

If you find a blown fuse, don't rush to replace it. First, check the circuit for a short circuit - often the cause lies in damaged wiring or a faulty consumer (for example, a window lift motor). Fuse No. 10 (15A, ECU) is especially vulnerable: its burnout can occur due to a power surge or corrosion in the control unit connector.

⚠️ Attention: If fuse #10 blows again after replacement, do not restart the engine. This may indicate a malfunction ECU or sensor power circuits. In this case, diagnostics with a scanner is required (for example, Launch X431 or ELM327).

Turn off the ignition and remove the terminal from the battery

Inspect the fuse for melts or breaks.

Check the circuit with a multimeter in "continuity" mode

Make sure the new fuse is the same rating -->

Engine compartment fuse and relay box: what is where

Engine compartment block Nissan Almera Classic is responsible for power electronics: starter, generator, cooling fans and fuel pump. It is located in a plastic box next to the battery (driver's side). The block cover has a diagram with symbols, but it is often erased over time.

Here are the key elements of this block:

• 🔥 Fuse 30A (red) — main fuse for the generator circuit. When it burns out, the battery does not charge and the battery icon lights up on the dashboard.
• ⚡ Fuel pump relay — if it does not click when you turn on the ignition, check its contacts or replace it (a common problem in wet weather).
• 💨 Cooling fan relay - if it malfunctions, the engine overheats and the fan does not turn on even at high temperatures.
• 🔋 Fuse 60A (blue) - protects the power circuit ECU and the main relay. Its burnout leads to complete failure of the electronics.

Features of the engine compartment - relays and fuses often oxidize here due to moisture ingress. If you notice a green coating on the contacts, clean them with alcohol or a special spray (for example, Kontakt 60). Do not use sandpaper - this will damage the contact coating!

How to test a relay without replacing it?

If the relay does not click, you can check it “by ear” or with a multimeter:

1. Turn on the ignition - a working relay will make a click.

2. If there is no click, measure the voltage at the control contacts (usually 85 and 86).

3. When 12V is supplied to these contacts, the relay should operate. If not, it is faulty.

Common problems with fuses: why they burn

B Nissan Almera Classic There are several “weak points” that cause fuses to fail more often than usual:

1. Short circuit in power window wiring - especially relevant for rear doors, where the wires fray from constant opening/closing. Fuse #25 (20A) blows with every use.
2. Moisture entering the fuse box — if the seal of the interior unit cover is worn out, the contacts oxidize, which leads to current surges. Fuses No. 10 (ECU) and No. 15 (cigarette lighter) are most often affected.
3. Generator malfunction - if it produces a voltage above 14.5V, this leads to blown fuses in the charging circuit (for example, 30A under the hood).
4. Connecting non-standard equipment - radios, rear view cameras or LED lamps without additional relays often cause circuit overload.

If the fuse burns again after replacement, don't increase its value (for example, instead of 10A, do not use 15A). This can lead to melted wiring or even a fire. Instead:

• 🔍 Check the circuit for short circuit with a multimeter.
• 🛠️ Inspect the consumers connected to this fuse (for example, a window lift motor or a headlight bulb).
• 💡 Use fuse with indicator (with LED) - it will help identify the problem faster.

Step-by-step instructions: how to replace the fuse correctly

Replacing the fuse in Nissan Almera Classic takes no more than 5 minutes, but it's important to do it no errors. Follow the instructions:

1. Turn off the ignition and remove the negative terminal from the battery (this will prevent a short circuit).
2. Find the faulty fuse - use the diagram from this article or the inscription on the block cover. A blown fuse usually has burnt contacts or a broken thread inside.
3. Remove the fuse with special tweezers (it is included in the unit) or pliers. Don't pull the wires!
4. Install a new fuse the same denomination. If you don’t have the original one at hand, you can temporarily use a wire “bug” same diameter, but only for the trip to the store.
5. Check circuit operation — turn on the ignition and activate the consumer (for example, headlights or window regulator).

If after replacement the fuse burns out again, do not repeat the procedure - this indicates a serious malfunction. For example, if the generator circuit fuse (30A) blows, check:

• 🔋 Battery condition (is it shorted inside).
• 🔌 Contacts on the generator (there should be no oxidation).
• 📉 Voltage at the battery terminals with the engine running (should be 13.8–14.5V).

⚠️ Attention: Never replace a fuse with a coin or nail. B Almera Classic The fuel pump circuit is protected by fuse No. 17 (15A). If it is shorted, it may cause the fuel pump to catch fire!

Relay diagnostics: how to check and replace

Relay in Nissan Almera Classic often cause problems that are difficult to diagnose. For example, if the cooling fan does not work, not only the relay itself may be to blame, but also the temperature sensor or wiring. To test the relay:

1. Remove the relay from the block - there are usually markings on its body (for example, R1 for fuel pump relay).
2. Ring the winding multimeter: the resistance between pins 85 and 86 should be 50–120 Ohms.
3. Apply 12V to pins 85 and 86 - if the relay is working properly, a click will be heard and contacts 30 and 87 will close.
4. Check your contacts for oxidation - often the problem lies not in the relay itself, but in poor contact with the block.

The most problematic relays in Almera Classic:

• 🔥 Fuel pump relay (R1) - if it does not work, the engine will not start (you will not hear the buzzing of the pump when you turn on the ignition).
• ⚡ Main Fan Relay (R3) — if it malfunctions, the engine overheats and the fan does not turn on even at 100°C.
• 💡 Low beam relay (R5) - if it burns, the headlights may flicker or not turn on at all.

If the relay appears to be OK, but the circuit does not work, check fuse protecting this relay. For example, the fuel pump relay (R1) is protected by fuse No. 17 (15A) in the cabin unit. Also inspect the connectors - in Almera Classic The contacts in the fan relay block (it is located next to the radiator) often oxidize.

FAQ: Frequently asked questions about fuses Nissan Almera Classic

Why does the engine not start after replacing fuse No. 10 (ECU)?

If fuse #10 is blown, this could cause the adaptations to reset ECU. Try:

1. Disconnect the battery terminal for 10 minutes (error reset).
2. Turn the key to the ON position (without starting the engine) for 30 seconds.
3. Start the engine. If this does not help, diagnostics with a scanner is required.

Also check the power circuit ECU (60A fuse under the hood) and the control unit connector for corrosion.

Is it possible to install a larger fuse if it is constantly on?

Absolutely not! Increasing the fuse rating may result in:

• Melting of wiring (especially in power window or lighting circuits).
• Out of order ECU or relay.
• Fire in the cabin (for example, if the cigarette lighter circuit shorts).

If the fuse burns repeatedly, look for the cause: a short circuit, a faulty consumer or poor contact.

Where is the cigarette lighter fuse located?

B Nissan Almera Classic The cigarette lighter is protected by a fuse No. 15 (10A) in the salon block. If it burns out, check:

• The cigarette lighter itself has a short circuit (often the culprit is a coin caught in the socket).
• Wiring from the cigarette lighter to the fuse box (it runs under the center console).
• USB ports or auxiliary outlets, if connected to this circuit.

Which fuse controls the central locking?

Central lock in Almera Classic protected by fuse No. 20 (10A) in the salon block. If the lock does not work:

1. Check this fuse.
2. Inspect the central locking relay (it is located in the interior unit, marking R6).
3. Ring the wires from the lock control unit to the actuators in the doors (they often fray in the corrugation between the door and the pillar).

If the fuse is good, but the lock does not respond to the remote control, check the battery in the key fob or the immobilizer antenna (it is built into the ignition switch).

What to do if the generator fuse (30A under the hood) has blown?

A blown fuse indicates:

• Short circuit in the generator circuit (check the diode bridge).
• Malfunction of the voltage regulator relay (if the generator produces more than 15V).
• Poor contact at the battery or generator terminals (oxidation).

What to do:

1. Replace the fuse with a new one (30A).
2. Measure the voltage on the battery with the engine running (should be 13.8–14.5V).
3. If the voltage is higher than 15V, the generator regulator is faulty.
4. If the fuse is blown again, turn off the generator and go for diagnostics.