Nissan Terrano 3 (2014–2023) - a popular crossover that replaced Terrano 2 and shares the platform with Renault Duster. Like any modern car, it is equipped with dozens of fuses that protect electrical circuits from overloads. But when the cigarette lighter, headlights or power windows stop working, many owners are at a loss: where to look for the reason?

In this article you will find detailed fuse box diagrams for all modifications Terrano 3 (including restyling 2020), decoding of each element, as well as step-by-step instructions for diagnosis and replacement. We'll look at how to distinguish a blown fuse from a faulty relay, what tools you'll need, and why sometimes replacement doesn't solve the problem. We will pay special attention hidden pitfalls - for example, why the cigarette lighter fuse may burn due to a connected DVR.

Where are the fuse boxes located in Nissan Terrano 3

B Terrano 3 provided three main fuse boxes:

  • 🔧 Main unit in the cabin — located to the left of the steering column, behind the plastic cover. The fuses of most consumers are concentrated here: lighting, multimedia, climate control.
  • 🚗 Block under the hood - located next to the battery (on some modifications - under a plastic casing). Responsible for powerful circuits: starter, generator, cooling fans.
  • ⚡ Additional relay block - often overlooked. Located behind the glove compartment or under the center console (depending on the year of manufacture). Contains relays for controlling headlights, windshield wipers and other systems.

On cars after the 2020 restyling, the location of the blocks has not changed, but Some fuse ratings have been revised (for example, the heated seat circuit is now protected by a 20A fuse instead of 15A). This is due to the updating of electronics and the addition of new options (keyless entry, improved audio system).

📊 Where do your fuses blow most often?
  • In the salon block
  • Under the hood
  • In the relay block
  • I don't know where to look

Diagram and decoding of the cabin unit fuses

The cabin unit is the most popular for diagnostics. To get to it:

  1. Open the driver's door and squat down.
  2. To the left of the steering column, find a plastic cover with the inscription FUSE.
  3. Pry off the cover with a screwdriver or your fingernail - it is secured with latches.

Under the cover you will see a diagram with fuse numbers. Below - full transcript for Nissan Terrano 3 2014–2023 (valid for all trim levels, including 4WD):

Fuse no. Denomination (A) Protected circuit Notes
F1 10 Engine control unit (ECU) If it burns out, the engine may not start or may not work properly.
F5 15 Cigarette lighter, 12V socket It often lights up due to the connection of powerful devices (for example, compressors).
F10 7.5 Right headlights (low/high beam) If both headlights do not light, check the relay K9.
F15 10 Audio system, navigation If the radio burns out, the radio may freeze or not turn on.
F20 20 Window lifters If it burns out, the glass will not move either up or down.

Please note: on vehicles with automatic transmission a fuse has been added to the interior block F25 (10A), responsible for automatic transmission solenoids. Its burnout can lead to stuck gears or inability to shift.

Turn off the ignition

Remove the fuse with tweezers (not your fingers!)

Check the filament for light

Replace with a fuse of the same rating-->

Fuse box under the hood: what you need to know

The engine compartment is located next to the battery and is covered with a black plastic cover. Here are high current fuses (from 30A to 100A), responsible for:

  • ⚡ Starter and generator - fuses F30 (100A) And F31 (60A). Their burnout can simulate a battery discharge.
  • 🔥 Cooling fans — F35 (40A). If it is burned out, the engine will overheat.
  • 💡 Fog lights — F40 (15A). It often lights up when there is a short circuit in the headlight wiring.

The special feature of this block is Blade type fuses, which differ from salon ones in size. To remove them you will need special tweezers (usually included with the car). If it is not there, you can carefully pry the fuse with a screwdriver, but don't use force - plastic latches are fragile.

What should I do if the fuse under the hood blows again?

This is a sign short circuit in the chain. Do not replace the fuse with a more powerful one - this may cause a fire in the wiring. Need to check:

1. Wires for exposed areas (especially near the battery).

2. Terminals for oxidation.

3. Consumers (for example, a cooling fan) for an interturn short circuit.

If you are not sure, contact an auto electrician with a diagnostic scanner.

Relay in Nissan Terrano 3: how to distinguish from a fuse and check

Relays are often confused with fuses, but their functions are different: if a fuse protects the circuit from overload, then the relay controls the switching on of powerful consumers (for example, headlights or starter). B Terrano 3 relays are located:

  • 🔌 In the cabin unit (next to the fuses) there is a relay K1–K12.
  • 🚗 In the additional block behind the glove compartment there is a relay K20–K25 (responsible for climate control and seat heating).

To test the relay:

  1. Remove the relay from the socket (pull up).
  2. Look at the contacts: if they are melted or blackened, the relay is faulty.
  3. Test the winding with a multimeter: the resistance should be within 50–120 Ohm.

The most "problematic" relays in Terrano 3:

  • 💡 K9 — low/high beam relay. If there is a malfunction, the headlights may flicker or not turn on.
  • 🔊 K11 - horn relay. Contacts often oxidize.
  • 🌀 K20 - Heater fan relay. If the stove is not working, check it first.
💡

If the relay clicks, but the consumer does not turn on (for example, the fan does not spin), the problem may be open circuit after relay or a malfunction of the device itself (for example, a burnt-out fan motor).

Why fuses burn: top 5 reasons for Terrano 3

A blown fuse is not the cause, but consequence of the problem. Here are the most common reasons for Nissan Terrano 3:

  1. Short circuit in wiring. Most often it occurs in places where wires rub against the body (for example, in doorways or under the hood).
  2. Connecting powerful devices to the cigarette lighter. Compressors, refrigerators or DVRs with higher voltage 12V/10A may burn a fuse F5.
  3. Moisture entering the fuse box. For example, after high-pressure washing or driving through deep puddles. This leads to oxidation of the contacts.
  4. Consumer fault. For example, a jammed window lift motor or heater fan motor creates increased load.
  5. Installing the wrong fuse. Many owners install "bugs" or fuses of higher amperage, which leads to wiring fire.

Especially often in Terrano 3 fuses are lit:

  • 🔥 F5 (15A) - cigarette lighter (the culprit in 60% of cases is cheap chargers).
  • 💡 F10/F11 (7.5A) - headlights (cause - oxidation of contacts in lamp sockets).
  • 🌀 F20 (20A) — window regulators (often due to dirt getting into the guides).
💡

If the fuse blows again after replacement - don't increase its value. This may cause the wiring to catch fire. It is necessary to look for the cause (short circuit or faulty consumer).

How to replace a fuse in Nissan Terrano 3: step by step instructions

Replacing a fuse is a simple procedure, but there are nuances that will help you avoid mistakes:

  1. Turn off the ignition and remove the key. This will prevent a short circuit when removing the fuse.
  2. Find the faulty fuse using the diagram (see section above) or visually (the burned-out thread will be visible in the light).
  3. Remove the fuse tweezers included in the kit (do not use metal objects!).
  4. Install a new fuse same denomination. The color and markings are indicated on the housing (for example, red - 10A, blue - 15A).
  5. Check the operation of the circuit. If the fuse blows again, look for the cause (see previous section).

Important points:

  • ⚠️ Never replace a fuse with a bug (wire or foil). This may cause a fire.
  • ⚠️ If the fuse F1 (10A, ECU) burned out, don't start the engine before replacement - this may damage the control unit.
  • 🔧 For fuses under the hood (F30–F45) use isolated tweezers - they are energized even when the ignition is turned off.

If after replacing the fuse the device does not work (for example, the headlights do not light), check:

  • 💡 The incandescent lamp itself (maybe burnt out).
  • 🔌 Contacts in the fuse block (sometimes they oxidize).
  • 🔧 Corresponding relay (see section on relays).

Frequently asked questions and problems with fuses in Terrano 3

Why after replacing the cigarette lighter fuse (F5) does it burn out again?

This is a sign short circuit in the cigarette lighter circuit or connecting a device that draws excessive current. Check:

  • The quality of the contacts in the cigarette lighter socket (they often burn out).
  • Connected devices - some DVRs or compressors require more than 15A.
  • Wiring from the cigarette lighter to the fuse box (may be frayed).

If the problem persists, contact an auto electrician for chain continuity tests.

Is it possible to install a fuse of a higher rating if the standard one often blows?

Absolutely not. The fuse is designed for a certain current, and increasing it can lead to:

  • Overheating and melting of wire insulation.
  • Fire in the fuse box.
  • Failure of the device that protects the fuse (for example, a control unit).

If the fuse frequently blows, look for cause of overload, and do not increase its denomination.

Where to find a fuse diagram for your modification Terrano 3?

The fuse diagram may vary depending on:

  • Year of manufacture (before/after restyling 2020).
  • Options (for example, with climate control or air conditioning).
  • Gearbox type (Manual transmission or Automatic transmission).

You will find the exact diagram for your car:

  • On the back of the fuse box cover.
  • B instruction manual (section "Electrical equipment").
  • On the website Nissan Russia (enter your vehicle's VIN).
How to check a fuse without removing it from the block?

There are two ways:

  1. Visual inspection: Light the fuse with a flashlight - if the filament is intact, the fuse is good.
  2. Testing with a multimeter:
    • Set the multimeter to circuit test mode (diode icon).
    • Touch the fuse terminals with the probes.
    • If resistance 0 ohm - the fuse is OK. If OL (break) - burned out.

⚠️ Don't test the fuse for a spark. - this may damage the unit.

What to do if there is water in the fuse box?

Moisture ingress is a common problem after washing or rain. Proceed like this:

  1. Disconnect the battery (remove the negative terminal).
  2. Remove all fuses and relays, dry them (you can use a hairdryer on cold setting).
  3. Wipe the fuse box with a dry cloth, removing moisture from all corners.
  4. Check contacts for oxidation - clean if necessary alcohol solution.
  5. After drying, reinstall the fuses and check the operation of all systems.

If after drying the fuses continue to burn, it is possible that moisture has managed to cause short circuit. In this case, wiring diagnostics is needed.