Nissan Liberty (known in some countries as Nissan Bluebird Sylphy) 1999 model is a reliable sedan, but even it has electrical problems over time. Most often, the culprit is blown fuses. Unlike modern cars with smart relay blocks, everything is simple here: if something doesn’t work, first check the fuse links.

In this article you will find complete fuse box diagram for Liberty 1999, a decoding of each element, as well as step-by-step instructions for diagnosis and replacement. We will not be scattered with general advice - only specific information verified in practice by the owners. We will pay special attention fuse F10 (15A), which is responsible for the fuel pump and often causes sudden engine stops.

Where is the fuse box located in Nissan Liberty 1999

B Liberty This generation has two main blocks:

  • 🔧 Main unit — located to the left of the steering column, under the instrument panel. 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 (under the plastic cover).

Important: on some modifications (for example, with an engine QG18DE) the diagram may differ slightly. If your unit looks different, check the sticker on the back of the cover. The current transcript is always indicated there.

To get to the main block:

  1. Open the driver's door and sit in the seat.
  2. Tilt the steering column down (if possible).
  3. Pry the block cover with a screwdriver or a flat object - it will come off without effort.
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If the unit cover does not budge, do not use force. Most likely, you missed one of the latches. Shine a flashlight - usually the problem is in the upper right corner.

Fuse diagram and decoding: what is responsible for what

The table below shows the standard scheme for Nissan Liberty 1999 with a gasoline engine. Please note: fuse numbers may be duplicated in different circuits (for example, F7 is responsible for both the cigarette lighter and the audio system).

Number Ampere (A) Purpose Notes
F1 10 Dimensions lamps (left side) Often burns out when installing LEDs
F5 10 Low beam (right headlight) Connected to relay K11 in the engine compartment
F10 15 Fuel pump, injection system Critical fuse - if it blows, the engine stalls
F15 20 Heater fan Check when there is no airflow
F20 15 Cigarette lighter, 12V socket Burns out when connecting powerful devices

The complete diagram can be found on the back of the unit cover. If the sticker has worn off, download it official guide (section Electrical Wiring Diagram).

📊 How often do you check the fuses in your Nissan?
  • Only when something breaks
  • Once every six months
  • At every maintenance
  • Never checked

How to check a fuse: 3 reliable ways

If in Liberty Some electrical circuit has stopped working (for example, the headlights do not light up or the window lifter does not work), first check the fuse. Here are three methods, from simplest to most accurate:

  • 👀 Visual inspection - take out the fuse and look at the light: if the fuse filament has burned out, it will be visible. Disadvantage of the method: sometimes the break is not noticeable to the naked eye.
  • 🔄 Replacing with a known good one - take a fuse with the same rating from another circuit (for example, from the cigarette lighter) and install it in the suspect's place. If the problem disappears, the culprit has been found.
  • ⚡ Testing with a multimeter - the most reliable way. Switch the tester to circuit test mode (with a sound signal) and touch the fuse contacts with the probes. If there is no sound, the fuse has blown.

Important: Never use fuses with large denominationthan indicated in the diagram! For example, if you install 15A instead of 10A, this can lead to melted wiring or even a fire. B Liberty 1999 chains are especially vulnerable F10 (fuel pump) and F20 (cigarette lighter) - they are often “improved” by inexperienced owners.

Turn off the ignition

Remove the fuse with tweezers (not your fingers!)

Check visually or with a multimeter

Install a new fuse with the same rating

Check the operation of the circuit-->

Step-by-step fuse replacement: what you need to know

Replacing the fuse in Nissan Liberty - a 2-minute task, but there are nuances. Here are the step-by-step instructions:

  1. Turn off the ignition and remove the key. This will prevent short circuits when working with the unit.
  2. Remove the fuse box cover (see the section above for how to do this).
  3. Locate the blown fuse using the diagram. If you are not sure, focus on melted contacts or blackened housing.
  4. Take out the fuse plastic tweezers (usually it is attached to the block cover). Never use metal tools!
  5. Install a new fuse same denomination. If you don’t have the original one at hand, you can temporarily use a wire bug, but only to get to the store.
  6. Check the operation of the circuit. If the fuse blows again, look for a short circuit in the wiring.

Tip: Carry a set of spare fuses with you. For Liberty 1999, it is enough to have 2-3 pieces with a nominal value of 10A, 15A and 20A. Store them in the glove compartment or under the seat.

What should I do if the new fuse burns out immediately?

This means there is a short circuit in the circuit. Do not continue to install new fuses as you risk damaging the wiring or device (such as the fuel pump). It is better to contact an auto electrician for diagnosis. Common causes of short circuits in Liberty:

- Melted insulation of wires under the hood (especially near the relay block).

- Damaged contacts in the connectors (for example, in the driver's side door).

- A faulty relay that “sticks” and creates an overload.

Top 5 problems with fuses in Nissan Liberty 1999

Over the years of operation, the owners Liberty identified problems with fuses. Here are the most common:

  1. Fuel pump fuse blows (F10) — usually the pump itself is to blame (wear of the brushes) or corrosion in the gas tank connector. Check the voltage at the pump: if there is voltage, but the fuse is on, replace the pump.
  2. Charging circuit fuses melt (F8, 10A) — check the generator and relay regulator. Often the problem is oxidized battery terminals.
  3. Cigarette lighter does not work (F20, 15A) - in 90% of cases, cheap phone chargers or compressors are to blame. Use only devices with overload protection.
  4. Cooling fan fuse blows (F14, 20A) — check the fan itself and its connector. Often the problem is oxidized contacts.
  5. Power windows do not work (F17, 25A) - Worn out motors or jammed mechanisms are usually to blame. Before replacing the fuse, check that the power windows are not overloaded.

If you encounter one of these problems, don't stop at replacing the fuse. Search root cause - otherwise the problem will return.

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B Nissan Liberty 1999 fuse F10 (fuel pump) is the most vulnerable point. If it burns out more than once every six months, be sure to check the pump and the wiring to it. Ignoring the problem can lead to failure of the fuel pump (the price of a new one is from 8,000 rubles).

Common mistakes when working with fuses

Even experienced car owners sometimes make mistakes that lead to even bigger problems. That's what can't do with fuses in Liberty:

  • ❌ Use bugs on an ongoing basis - the wire or foil is not designed to carry current and can melt, causing a fire.
  • ❌ Install fuses of higher ratings - it's like treating a headache by removing the head. For example, replacing 10A with 15A can burn out lamps or melt wiring.
  • ❌ Ignore re-burnout - if the fuse burns out again, then the problem is more serious. Need circuit diagnostics.
  • ❌ Touch fuses with wet hands — moisture can cause corrosion of the contacts in the unit.

It is especially dangerous to “collectively farm” fuses in circuits associated with fuel system (F10) or ignition (F6). In the first case, you risk being left without a fuel pump; in the second, you risk burning the ignition coils.

⚠️ Attention: If the engine does not start after replacing fuse F10 (fuel pump), do not turn the starter for more than 10 seconds at a time. This may flood the candles. Pause 30 seconds and try again. If the engine does not catch, check the pressure in the fuel rail (should be 2.5–3.0 bar).

Where to buy fuses for Nissan Liberty 1999

Fuses for Liberty - not a shortage, but it is important to choose quality ones. Here's where to look for them:

  • 🛒 Auto stores - for example, "AvtoDetal", "Existential" or local points. Ask for fuses Nissan with markings 28500-4M000 (original unit part number). Universal ones are also suitable, for example, Bosch or Hella.
  • 🌍 Online platforms:
    • Wildberries (search for "Nissan fuses 10A-30A")
    • AliExpress (sets of 100 pieces for 300–500 rubles)
    • Exist.ru (original and analogues)
  • 🔧 Showdown - if rare ratings are needed (for example, 80A for the main fuse). But be careful: used parts with burnt contacts are often sold at disassembly sites.

Advice: buy fuses with transparent body - this makes it easier to control their condition. Avoid cheap Chinese sets with soft contacts: they often do not fit well into the block sockets.

Average prices (for 2026):

  • Set of 10 fuses (10A–30A) — 150–300 rubles.
  • Original fuse Nissan — 50–100 rubles per piece.
  • Tweezers for extraction - 80–150 rubles.
⚠️ Attention: When purchasing fuses on AliExpress, pay attention to size. B Liberty 1999 type fuses used Mini Blade (small), not standard Regular Blade. They look similar, but are not interchangeable!

FAQ: Frequently asked questions about fuses Nissan Liberty 1999

Can fuses from other brands of cars be used?

Yes, if they match face value And type (Mini Blade). Fuses are standardized parts and original Nissan no different from analogues Hella or Boschexcept the price. The main thing is not to skimp on quality: cheap fuses may have poor contact or inaccurate rating.

Why does fuse F20 (cigarette lighter) burn out every month?

This is a typical problem Liberty. Reasons:

  1. You connect devices with consumption >10A (for example, compressors or inverters).
  2. Short circuit in the cigarette lighter wiring (wires under the dashboard often fray).
  3. Malfunction of the cigarette lighter socket itself (melted contacts).

Solution: replace the cigarette lighter socket (part number 28550-4M000) and use a fused power strip.

How to check the relay in the fuse box?

Relay in Liberty are checked like this:

  1. Take out the relay and look at its body - the contact diagram is indicated there.
  2. Apply 12V to the coil pins (usually 85 and 86). There should be a click.
  3. Check the resistance between pins 30 and 87 with a multimeter - it should be ~0 Ohm (closed).

If the relay does not click or close its contacts, replace it. Popular items for Liberty: 25230-4M000 (fan relay), 25230-31U00 (fuel pump relay).

What to do if the main fuse (80A) has blown?

The main fuse (usually 80A or 100A) is located in a block under the hood. Replacing it requires caution:

  1. Disconnect the battery (negative terminal first!).
  2. Remove the plastic cover of the unit.
  3. Unscrew the fuse mounting bolts (you will need a 10mm wrench).
  4. Install a new fuse and tighten the bolts with a force of 5–7 Nm.

If the main fuse blows repeatedly, look for short circuit in the power circuit (for example, in a starter or generator). Self-diagnosis here is difficult - it is better to contact an auto electrician.

Is it possible to drive without a fuse if it's blown?

Short answer: no. The fuse protects the circuit from overload, and its absence can lead to:

  • Wiring fires (especially dangerous for fuel pump or ignition circuits).
  • Failure of expensive components (for example, ECU or generator).
  • Short circuit, which may damage the battery.

Exception: if the fuse burns out on the road, and you need to drive, you can temporarily install a “bug” made of wire thickness no more than 0.5 mm (for 10–15A). But as soon as possible, replace it with a normal fuse.