Nissan Almera N16: location, diagram and decoding of fuses (2000–2006)

Nissan Almera N16 (2000–2006) - a popular sedan that is still actively used on the roads of the CIS. However, as owners age, they increasingly experience electrical problems: headlights do not work, the stove fails, the radio stops responding, or the on-board computer malfunctions. In 80% of cases the reason for this is - blown fuses or faulty relays.

In this article you will find complete fuse block diagram for Almera N16 with a description of each element, a photo of the location of the mounting blocks and step-by-step diagnostic instructions. We will also look into typical “diseases” of electricians of this generation, which are not described in the official manual, but are regularly encountered in practice.

Where are the fuse boxes in Nissan Almera N16

B Nissan Almera N16 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).
• ⚡ Additional relay block — located in the engine compartment, next to the battery (protected by a plastic casing).

Important: on the restyled versions (2003–2006), the arrangement of the blocks has not changed, but ratings of some fuses may vary depending on configuration. For example, in cars with air conditioning a relay is added AC Compressor Clutch, but it is not available in the basic versions.

To avoid confusion, remember a simple rule: all fuses responsible for interior equipment (stove, radio, cigarette lighter) are located in the interior unit. In the engine compartment there are only power circuits (starter, generator, fans).

Diagram and decoding of the cabin unit fuses

Salon block Almera N16 contains 38 fuses and 12 relays. Below is a table with a breakdown by numbers (numbering goes from left to right, top to bottom). Please note: there is also a diagram on the block cover, but it is often erased or unreadable.

Fuse no.	Denomination (A)	Purpose	Notes
1	10	Side lights (left side), license plate light	Often burns out when installing LED lamps
7	10	Low beam (right headlight)	If the lamp burns out, check the lamp - often the cause is a short circuit in the coil
15	15	Cigarette lighter, 12V socket in trunk	Burns out when connecting powerful devices (compressor, inverter)
23	10	Audio system, antenna, amplifier	If the radio does not turn on, also check the relay Audio (poz. 3)
30	10	Engine control unit (ECU), immobilizer	Never replace with a fuse of a higher rating - there is a risk of ECU failure!

The complete diagram of all 38 fuses can be downloaded here (PDF, 1.2 MB). Please note: on machines with Automatic transmission added fuses No. 35 (10A) And No. 36 (10A), responsible for the box solenoids. Their absence in manuals for “mechanics” often confuses owners.

⚠️ Attention: fuse No. 30 (10A, ECU) - critical. If it burns out, the engine will not start, but the dashboard will light up Check Engine. When replacing it, be sure to check the circuit for a short circuit, otherwise the new fuse will burn out immediately after installation.

Relay in the cabin unit: purpose and typical faults

In the salon block Almera N16 12 relays installed. Their location and purpose:

• 🔄 Poz.1 — Cooling fan relay (low speed). Symptom of the problem: The fan does not turn on when the engine warms up to 95°C.
• 🔥 Poz.4 - Starter relay. Sign of failure: There is a clicking sound when you turn the key, but the starter does not turn.
• 🎵 Poz.3 — Audio system relay. Common problem: The radio turns on only after several presses of the button.
• 💡 Poz.7 — High beam relay. Nuance: If it fails, the high beam will not work on any headlight.

The relay deserves special attention Poz.10 — fuel pump relay. If it fails, the engine will not start (the fuel pump will not be heard when the ignition is turned on). The test is simple: swap it with a known good relay (for example, a fan relay) and try to start the car.

Another “weak” element is the relay Poz.6 (heated rear window). It often burns due to oxidation of the contacts on the glass. Advice: Before replacing the relay, check the resistance of the heating filaments with a multimeter (should be ~5–10 Ohms).

Swap with a known good relay (for example, Poz.2 and Poz.4)

Check the voltage at the control contacts (should be 12V when activated)

Inspect contacts for oxidation or burning

Ring the relay coil (resistance ~50–120 Ohm)

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Engine compartment relay block: what is there and how to check

In the engine compartment Almera N16 An additional unit with 4–5 relays is installed (depending on the configuration). It is located to the right of the battery, under a plastic cover. This block contains:

• ⚡ Main Relay — main relay of the injection system. Symptom of the problem: The engine stalls 2-3 seconds after starting.
• 🔥 AC Compressor Clutch — air conditioning compressor clutch relay (only for cars with climate control).
• 🔄 Cooling Fan Relay (High Speed) - Cooling fan relay (high speed).

How to check the relay in the engine compartment:

1. Remove the unit cover (snap off the 2 latches).
2. Remove the relay and inspect the contacts for oxidation.
3. Test the winding with a multimeter: the resistance should be within 50–120 Ohm.
4. Apply 12V to the control contacts (usually 85 And 86) - there should be a click.

⚠️ Attention: Relay Main Relay often “glitches” due to moisture getting into the block. If the car does not start after rain or car wash, first check this relay. Dry the unit with a hairdryer (without overheating!) and treat the contacts WD-40.

How to distinguish an original relay from a fake?

Original relays Nissan have:

1. Logo Nissan or Mitsubishi on the body (not a sticker!).

2. Clear marking of contacts (85, 86, 87, 30).

3. Matte plastic, without burrs.

Counterfeits are usually glossy, with crooked markings and thin contacts that bend when removed.

Typical problems with fuses and relays: owner experience

Over the years of operation Almera N16 The owners have identified several “weak points” in the electrical system that are not described in the official manuals:

1. Cigarette lighter fuse (No. 15, 15A) — burns out when connecting powerful devices (for example, a car vacuum cleaner). Solution: use a fused splitter or connect directly to the battery through the terminals.
2. Cooling fan relay (Poz.1) - often “sticks” when closed, which leads to engine overheating. Sign: The fan runs constantly, even on a cold engine.
3. fuse No. 30 (10A, ECU) - may burn out when “lighted” from another car with a faulty generator. Always check the donor's tension before the procedure!

Another common problem is oxidation of contacts in the fuse box. This manifests itself as “floating” faults: sometimes the stove works, sometimes it doesn’t; The lights either light up or go out. Solution:

• Remove the fuse box (unscrew the 2 Torx T20 screws).
• Clean your contacts special fluid for electrical (For example, Kontakt 60).
• Apply a thin layer Litol-24 on metal parts (not on the board!).

1. Remove the fuse.

2. Connect the multimeter in dialing mode to the socket contacts.

3. If the resistance is ~0 Ohm, there is a short circuit. If infinity is a problem in the consumer (for example, in a lamp).-->

How to properly replace a fuse or relay

Replacing a fuse or relay in Nissan Almera N16 - a simple procedure, but there are several nuances that will help you avoid mistakes:

1. Turn off the ignition and remove the battery terminal (negative). This will prevent short circuits.
2. To remove fuses, use plastic tweezers (usually lies in the block). Do not try to remove the fuse with metal tools!
3. When replacing the relay, pay attention to number on the case (For example, 12V 30A/40A). Install relays with identical parameters.
4. After replacement, check the operation of the circuit before assembling the block. For example, if you replaced the cigarette lighter fuse, turn on the ignition and check the voltage at the outlet.

If after replacement the fuse blows again, do not repeat the procedure - this is a sign of a short circuit. In this case:

• Check wiring for damage to the insulation (especially in bend areas).
• Inspect consumer (lamp, stove motor, etc.) for the presence of a short circuit.
• If you are not confident in your abilities, contact an auto electrician with diagnostic equipment.

Where to buy fuses and relays for Almera N16

Fuses and relays for Nissan Almera N16 are sold at any auto store, but there are several recommendations for choosing:

• 🛒 Fuses: Take only knife type (standard ATO/ATC). Optimal brands: Bosch, Hella, Valeo. Avoid no-name - they often have a reduced fuse section.
• 🔄 Relay: For critical circuits (starter, fuel pump, ECU), use the original (Nissan 25230-4M200 for the main relay) or analogue from Mitsubishi. Relays are suitable for the fan and light Omron or Song Chuan.

Prices for fuses and relays (for 2026):

Name	Original (Nissan)	Analogue (Bosch/Hella)
Fuse 10A (pack of 5 pieces)	—	80–120 rub.
Fan relay (Pos.1)	1,200–1,500 rub.	400–600 rub.
Main Relay	1,800–2,200 rub.	800–1,200 rub.
Starter relay (Pos.4)	1,500 rub.	500–700 rub.

When buying a relay, pay attention to contact markings. For example, the starter relay must have contacts 30, 85, 86, 87, and the fan relay is 85, 86, 87, 87a. If the contacts do not match, the relay will not work, even if it is identical in appearance.

⚠️ Attention: Online stores often sell “universal” relays for Nissan at a low price. Be careful: these relays may not be able to handle the stated load. Check the seller's reviews and reputation!

FAQ: Frequently asked questions about Almera N16 fuses

Why does the cigarette lighter fuse blow again after replacing it?

The reason is a short circuit in the circuit. Most often the culprits are:

• Damaged wiring under the dashboard (frayed or shorted to ground).
• Faulty 12V socket (oxidation of contacts or short circuit inside).
• Connected device with internal short circuit (e.g. faulty compressor).

What to do: Disconnect all devices from the cigarette lighter, replace the fuse and check the circuit with a multimeter. If the fuse blows again, look for a short circuit in the wiring.

Is it possible to install a fuse of a higher rating if it constantly blows?

Absolutely not! A fuse is designed to protect a specific circuit. If, for example, you install a 15A fuse instead of 10A, this can lead to:

• Overheating and melting of wire insulation.
• Failure of a consumer (for example, ECU or audio system).
• Fire in the cabin (in extreme cases).

If the fuse blows, you need to find and eliminate the cause (usually this is a short circuit or a faulty consumer).

Where is the fuel pump fuse located?

B Almera N16 The fuel pump fuse is No. 31 (15A) in the salon block. There is also a relay in the fuel pump circuit. Poz.10.

Signs of malfunction:

• The engine does not start (the pump cannot be heard when the ignition is turned on).
• The car stalls while driving (if the fuse blows while driving).

Before replacing, check the voltage at the pump connector (should be 12V when the ignition is turned on).

How to test a relay with a multimeter?

To check the relay you will need a multimeter in continuity or resistance measurement mode. Procedure:

1. Remove the relay from the block.
2. Ring the winding between the contacts 85 And 86 - there must be resistance 50–120 Ohm.
3. Apply 12V to the contacts 85 And 86 (possible from battery). There should be a click.
4. Call contacts 30 And 87 — after applying voltage, they should “sound” (resistance ~0 Ohm).

If the relay does not click or ring, it is faulty.

What to do if the ECU fuse is blown (№30)?

This fuse protects engine control unit, so its burnout is a serious problem. Follow the algorithm:

1. Replace the fuse with a new one the same rating (10A).
2. Check if the engine starts. If the fuse blows again - do not repeat replacement!
3. Turn off all additional equipment (alarm, radio, heating).
4. Check the circuit for short circuit: disconnect the connector from the ECU and check the wiring from the fuse to the unit.

If the problem is not solved, contact a diagnostician. Repairing the ECU yourself without experience can result in complete failure of the unit.