Fuse box <em>Nissan March K11</em>: diagram, purpose and repair

Fuse box in Nissan March K11 (1992–2002) - a critical component responsible for protecting the vehicle’s electrical circuits from overloads and short circuits. Even a minor fuse failure can cause the lighting, heater, audio system, or even the immobilizer to fail. Owners March K11 often encounter problems with blown fuses due to aging wiring or incorrect installation of additional equipment.

In this article you will find detailed fuse box diagram with a decoding of each element, signs of malfunctions associated with blown fuses, as well as step-by-step instructions for replacing them. Particular attention is paid typical mistakesthat owners make when diagnosing, and ways to avoid them. If your Nissan March K11 suddenly stopped responding to turning the ignition key or the devices refuse to work - first check the fuse box.

Where is the fuse box located in Nissan March K11

B Nissan March K11 The fuse box is located in two places:

• 🔧 Main unit - under the instrument panel on the driver's side. To access it, you need to open the driver's door, sit down and look down under the steering column. The unit is closed with a plastic cover with latches.
• 🔌 Additional relay block — in the engine compartment, next to the battery (on some modifications). It is responsible for high-load circuits such as the cooling fan or fuel pump.

On earlier versions March K11 (1992–1995) the main fuse box can be hidden deeper - its cover is sometimes covered with a decorative trim, which must be carefully pryed off with a screwdriver. In models after 1998, access is simplified: the cover is fixed with two plastic latches and removed without tools.

If you can't find the block, please take a look at marking on the lid - usually there is a diagram or inscription on it FUSE BOX. In some trim levels March K11 with right-hand drive (for example, for the Japanese market), the unit can be moved closer to the center console.

Fuse box diagram Nissan March K11 with transcript

Below is complete fuse box diagram for Nissan March K11 (1992–2002). Please note that depending on the year of manufacture and configuration, some fuses may be missing or have a different purpose. For example, in basic versions without air conditioning there is no fuse F10 (A/C).

Designation	Denomination (A)	Purpose	Symptoms of a problem
F1	10	Side lights (left side), license plate light	Left side lights or license plate lights do not light up
F2	10	Side lamps (right side), instrument panel illumination	The lights on the right do not work or the instrument panel lights up dimly
F7	15	Low beam headlights (left headlight)	The low beam on the left does not turn on, but the high beam works
F10	10	Air conditioning system (if installed)	The air conditioning compressor does not turn on, the fan works
F15	20	Heater fan motor	The heater does not blow, but the speed switch works

Important: Fuse F20 (15A) responsible for the operation of the immobilizer and engine ECU. Its burnout can lead to a complete failure to start the engine, even if the starter turns. In such cases, do not rush to blame the battery or starter - check this fuse first.

To accurately identify the fuse, pay attention to back side of the block cover — there is often a diagram showing the purpose of each element. If there is no diagram, use a multimeter in continuity mode or visually check the fuse thread for integrity.

Signs of faulty fuses and relays

Blown fuse in Nissan March K11 manifests itself differently depending on the circuit being protected. Here typical symptomsthat should alert you:

• ⚡ Lighting failure: headlights, side lights or interior lighting do not work. The most common culprit is fuses. F1–F4 (10A) or F7–F8 (15A).
• 🔊 Audio system silence: If the radio does not turn on, check F12 (10A) — he is responsible for the power circuit of the head unit.
• 🚗 Engine won't start: if the starter does not turn, it is the fault F19 (30A). If the starter turns, but the engine does not start, check F20 (15A) (immobilizer/ECU).
• 💨 Furnace or air conditioner not working: fuses F10 (10A) or F15 (20A), as well as the fan relay.

Especially insidious intermittent malfunctions, when the fuse blows only under certain conditions - for example, when the high beams are turned on or the fan is running at maximum speed. This often indicates short circuit in the wiring or a consumer malfunction (for example, a stove motor).

⚠️ Attention: If the fuse blows immediately after replacement, do not install a fuse of a higher rating - this may lead to a fire in the wiring. In such cases, it is necessary to look for the cause of the short circuit, and not mask the problem.

Another warning sign - melting of the fuse body or socket. This indicates prolonged overheating and requires checking the circuit for increased resistance or poor contact. In such cases, it is recommended to clean the oxidized contacts of the unit and replace the problematic fuse with a new one, even if it is apparently intact.

How to correctly replace a fuse in Nissan March K11

Replacing a fuse is a simple procedure, but there are nuances here, especially if you are dealing with March K11 over 20 years old. Follow these instructions to avoid common mistakes:

1. Turn off the ignition and remove the key. This will prevent a short circuit when removing the fuse.
2. Remove the unit cover. Press the latches on the sides and pull the cover towards you. If it does not give in, do not use force - perhaps an additional clamp is holding it in place (see spoiler below).
3. Find the problem fuse. Use the circuit from the previous section or a multimeter in dial mode.
4. Remove the fuse special tongs (usually attached to the block cover). If you don't have pliers, you can carefully pry the fuse with a small screwdriver, but do not use metal objects - there is a risk of a short circuit!
5. Install a new fuse the same denomination. Never use bugs made of foil or wire.
6. Check circuit operation. Turn the ignition on and make sure the problem is resolved.

Ignition turned off and key removed

Have spare fuses of the required rating on hand

Tools: Fuse pliers or plastic screwdriver

Multimeter (optional, for checking the circuit)

Flashlight for illuminating the block-->

If after replacement the fuse blows again, do not repeat the procedure - this indicates a serious malfunction in the circuit. In such cases it is necessary:

• 🔍 Check the wiring for short circuits (especially in places where the insulation is rubbed).
• 🔧 Disconnect consumers connected to this circuit (for example, a radio or additional headlights).
• 📊 Test the circuit with a multimeter to check for current leakage.

⚠️ Attention: B Nissan March K11 With a mileage of more than 150 thousand km, the problem of oxidation of contacts in the fuse box is often encountered. If fuses blow for no apparent reason, clean the contacts of the unit with alcohol or a special electronics fluid.

Common Fuse Box Problems March K11 and their solutions

Owners Nissan March K11 face several characteristic malfunctionsconnected to the fuse box. Let's look at the most common ones:

1. Oxidation of block contacts

Symptoms: The fuses appear intact, but the circuit does not work. The reason is oxidation of the contact pads due to moisture or aging.

Solution:

• Remove the fuse box (unscrew the fasteners or disconnect the connectors).
• Clean the contacts with fine sandpaper or a special liquid Kontakt 60.
• Apply a thin layer of petroleum jelly to protect against corrosion.

2. Fuse blown F20 (15A) when starting the engine

Symptoms: the engine does not start, the starter turns, but there is no spark. The fuse blows immediately after replacement.

Solution: The problem often lies in a malfunction immobilizer or ECU. Check:

• Condition of the wiring from the ignition switch to the ECU.
• Immobilizer performance (try starting the car with a spare key).
• Contact voltage F20 - it should not exceed 12V.

How to remove the fuse box to clean the contacts

1. Disconnect the battery (remove the negative terminal).

2. Unscrew the two screws securing the block (usually a Phillips screwdriver).

3. Carefully disconnect all connectors from the back of the unit, remembering their location.

4. For reassembly, use a photograph of the connectors taken before dismantling.

3. Constantly blown fuse F15 (20A) (stove fan)

Symptoms: the fuse burns out when the stove is turned on at maximum speed.

Solution: In 90% of cases it is to blame heater fan motor. Disassemble the panel, remove the motor and check:

• Condition of the brushes and commutator (a common cause is wear of the brushes).
• No mechanical obstacles to impeller rotation.
• Integrity of the windings (check with a multimeter).

If the motor is working properly, check the wiring from the fuse block to the heater resistor - the wires in the corrugation under the panel often fray.

Upgrading the fuse box: is it worth replacing with a new one?

Many owners Nissan March K11 wondering: does it make sense to replace the old fuse box with a new one? The answer depends on the condition of the car:

• ✅ Replacement is justified if:
• The block has mechanical damage (cracks, melting).
• The contacts are so oxidized that cleaning does not help.
• You are planning to install additional equipment (for example, a powerful audio system), and the old unit cannot withstand the load.
• ❌ Replacement is not needed if:
• The block is externally intact, but the problems are related to individual fuses.
• The car is used without significant electrical loads.

Cost of a new fuse box for March K11 varies from 1,500 to 3,000 rubles (depending on the manufacturer). When purchasing, pay attention to quality of contacts - cheap Chinese analogues often have a thin coating that quickly oxidizes. The best option is blocks from Denso or Mitsuba (original suppliers for Nissan).

If you decide to keep the old block, it is recommended:

• Once a year, clean contacts from oxidation.
• Use fuses with gold plated contacts (they oxidize less).
• Periodically check the tightness of the fuses - over time, the sockets wear out and contact deteriorates.

Frequently asked questions about the fuse box Nissan March K11

Is it possible to use a larger fuse if the original one keeps blowing?

No, this is extremely dangerous! The fuse is designed for a certain load, and replacing it with a more powerful one can lead to wiring fire. If a fuse blows, look for the cause - usually a short circuit or a faulty consumer (for example, a stove motor).

Why after replacing the fuse F20 (15A) car won't start?

This fuse protects the circuit immobilizer and ECU. If the engine does not start after replacement, check:

• Condition of contacts in the block (possibly oxidation).
• Immobilizer performance (does the light on the panel light up?).
• Contact voltage F20 — there should be 12V when the ignition is on.

If the problem remains, the ECU itself or the immobilizer may have burned out - in this case, diagnostics will be required at a service station.

Where to buy spare fuses for March K11?

Fuses of standard ratings (10A, 15A, 20A, 30A) are sold at any auto store. For Nissan March K11 suitable type fuses ATO/ATC (flat, knife). Recommended brands:

• Bussmann — high quality, reliable contacts.
• Littlefuse - original fuses for many Japanese cars.
• Hella — good price/quality ratio.

Avoid cheap, unlabeled fuses - they are often underrated and can blow for no reason.

How to check the relay in the fuse box?

Relay in March K11 are checked as follows:

1. Remove the relay from the block (usually it is removed by hand).
2. Ring the contacts with a multimeter 85 And 86 (winding) - resistance should be 50–120 Ohms.
3. Apply 12V to the contacts 85 And 86 - a click should be heard (contacts closing 30 And 87).

If the relay does not click or the contacts do not close, it must be replaced. B March K11 Most often, the cooling fan and fuel pump relays fail.

What to do if the fuse box melts?

Block melting is a serious problem that requires immediate attention. Follow the algorithm:

1. Disconnect the battery.
2. Remove the unit and inspect it for short circuits (melted tracks, blackened contacts).
3. If the unit is severely damaged, replace it with a new one. You can try to eliminate light melting by stripping the contacts and restoring the tracks with solder (only for experienced ones!).
4. Check all circuits connected to the unit for short circuits.

Melting often occurs due to incorrect installation of fuses (for example, using "bugs") or circuit overload (for example, when installing powerful LED headlights).