Nissan Bluebird Sylphy: fuse diagram with decoding and step-by-step instructions

Nissan Bluebird Sylphy is a popular sedan known for its reliability, but even in such a car fuses periodically blow. Without a diagram of the blocks and an understanding of their location, replacement can turn into a long torture: in some places the headlight does not light up, in others the radio tape recorder fails, and sometimes the engine does not start at all. In this article you will find current fuse diagrams for all generations Sylphy (including G11, B17 And B18), decoding of each element and step by step instructionshow to check and replace them correctly.

We will not limit ourselves to dry technical data - here you will find out Which fuses fail most often? (and why), how to distinguish a burnt-out element from a working one without a tester, and what to do if the problem remains after replacement. We'll also look into it hidden fuse blocks, which are not written about even in official manuals, but which are responsible for critical systems like ABS or immobilizer.

Where are the fuse boxes in the Nissan Bluebird Sylphy?

B Nissan Bluebird Sylphy fuses are distributed according to three main blocks, and their location depends on the generation and market (for example, there may be differences in Japanese and European versions). Here's where to look for them:

• 🔧 Main mounting block — located in the cabin, under the instrument panel on the driver’s side. To gain access, you need to open the door, sit down and look at the left side of the dashboard: there is a plastic cover with latches.
• 🚗 Block under the hood — located next to the battery (in models G11 And B17) or near the air filter (in B18). Usually covered with a black plastic cover with the inscription FUSE.
• 🔌 Additional block — in some configurations (for example, with a system NissanConnect) there is a third unit behind the glove compartment or under the center console. It is often overlooked, although it houses fuses for the multimedia and climate controls.

Important: in Sylphy after 2015 (restyling versions), the block under the hood may be moved closer to the windshield - look for it next to the relay block. If you are not sure, refer to black box with red wires, going to the battery.

Main unit fuse diagram (interior) with decoding

The main unit in the cabin is responsible for most electrical circuits: from lighting to the ignition system. Below is the diagram for Nissan Bluebird Sylphy G11/B17 (for B18 there may be minor differences, but the fuse numbering is usually the same).

Fuse no.	Denomination (A)	Purpose	Symptoms of a problem
F1	10	Interior lighting, instrument lighting	The lamps in the doors or on the ceiling do not light up
F7	15	Cigarette lighter, 12V socket	Phone charging or DVR does not work
F10	20	Window lifters (all four)	Windows don't go up/down
F15	10	Engine control unit (ECU)	The engine does not start, it is on fire CHECK ENGINE
F20	15	Audio system, navigation	The radio does not turn on, there is no sound

⚠️ Attention: fuse F15 (ECU) is often confused with the fuel pump fuse (F22), but they are responsible for different circuits. If after replacement F15 car still won't start, check fuel pump relay - it is located in the same block, but in the relay section (indicated R7).

In models with NissanConnect (For example, Sylphy B18 2018+) additional fuses appear in the main block:

• 📱 F25 (10A) - Bluetooth and hands-free module;
• 📡 F28 (15A) - antenna amplifier and GPS;
• 🔋 F30 (20A) - keyless entry system (Intelligent Key).

Engine compartment fuse diagram

The block under the hood is responsible for power electrics: starter, generator, cooling fans, etc. Its fuses have a higher rating (from 30 to 100A) and are usually made in the form knife inserts (and not flat, like in the salon). Here are the key elements for Bluebird Sylphy G11/B17/B18:

Fuse no.	Denomination (A)	Purpose	Consequences of burnout
F30	60	Main ignition fuse	The car does not respond to turning the key
F35	50	Radiator fan	Engine overheating, lights up TEMP
F40	40	ABS and stability control system	Burning ABS And SLIP on the dashboard
F45	30	Fuel pump	The engine does not start, there is no pump sound when the ignition is turned on

⚠️ Attention: fuse F45 (fuel pump) often burns out due to short circuit in the circuitand not from normal wear and tear. If it is burnt out, check before replacing wiring under the rear seat — there are wires to the pump, and they can fray.

B Sylphy B18 with hybrid system (e-Power) additional fuses appear in the engine compartment:

• ⚡ F50 (80A) - hybrid system inverter;
• 🔋 F55 (60A) - high-voltage battery;
• 🚘 F60 (50A) - regenerative braking system.

What should I do if the fuel pump fuse blows again?

If after replacement F45 it burns out again, the problem may be:

1) Short circuit in the fuel pump itself (need to be checked with a multimeter);

2) Damaged wiring under the rear seat (wires often fray at bends);

3) Faulty pump relay (check R12 in the cabin block).

Do not replace the fuse with a higher rating - this may cause a fire!

How to check and replace a fuse: step-by-step instructions

Replacing the fuse in Nissan Bluebird Sylphy — the procedure is simple, but there are nuances that will help you avoid mistakes. Follow this algorithm:

1. Turn off the ignition and remove the key from the lock. In hybrid versions (e-Power) additionally press the button POWER OFF.
2. Find the desired block (interior or under the hood) and remove the cover. In the interior unit, the cover is fixed with two latches - pry it off with a flat screwdriver.
3. With tweezers (usually attached to the block cover) remove the fuse. If you don't have tweezers, use pliers with insulated handles.
4. Check the fuse for light: if the jumper inside is burnt out, it needs to be replaced. In doubtful cases, use a multimeter in dial mode.
5. Install a new fuse same denomination. Under no circumstances should you install a “bug” or a higher amperage fuse - this may damage the wiring.

⚠️ Attention: B Sylphy with the system Intelligent Key after replacing the fuse F30 (keyless entry) may be required system reboot. To do this:

1. Close all doors.
2. Click the button LOCK on the key and hold for 5 seconds.
3. Open and close the driver's door.

Which fuses blow most often and why?

B Nissan Bluebird Sylphy There are “problem” fuses that fail more often than others. Here are the top 5 with reasons and solutions:

• 🔥 F7 (15A) - cigarette lighter. Reason: use of powerful devices (for example, car vacuum cleaners or compressors). Solution: replace with 20A (acceptable) or use a fused power strip.
• 💡 F10 (20A) — power windows. Reason: glass freezing in winter or moisture getting into the mechanism. Solution: Lubricate the guides with silicone grease.
• 🚗 F15 (10A) — ECU. Reason: voltage surges when “lighting up” or a faulty generator. Solution: check the battery voltage (should be 12.6–14.4V).
• 📻 F20 (15A) — audio system. Reason: short circuit in the speakers or damaged wires. Solution: check the circuit with a multimeter.
• ⚡ F45 (30A) — fuel pump. Reason: poor fuel quality or pump wear. Solution: replace the fuel filter and check the rail pressure.

In hybrid versions (e-Power) often fails F50 (80A) — inverter. This is usually associated with overheating of the high-voltage battery or a malfunction of the cooling system. If the fuse burns out repeatedly, diagnostics are required at a service station with equipment for hybrids.

Hidden fuse boxes: where to look and what they are responsible for

In addition to the main blocks, Nissan Bluebird Sylphy There is hidden fuses and relays, which are not written about in standard instructions. They are responsible for:

• 🔐 Immobilizer - fuse F-IMMO (10A) is hidden behind the glove compartment (in models before 2015) or under the center console (in B18). If it fails, the car will not start, and the key icon flashes on the dashboard.
• 🚨 ABS/ESP — an additional relay is located under the plastic panel near the pedal assembly. To get to it, you need to remove the cover under the steering wheel.
• 📶 Antenna amplifier - fuse F-ANT (5A) is located behind the trunk trim (sedans) or under the rear parcel shelf (hatchbacks). If it malfunctions, the radio signal and GPS are lost.

⚠️ Attention: B Sylphy B18 with the system ProPILOT there is a separate fuse box for radars and cameras located behind the front bumper. To get to it, you need to remove the plastic protection under the bumper (4 clips). The fuses are designated there as F-CAM1 And F-CAM2 (both 10A).

If you can't find a hidden block, look for bundles of wires:

- For the immobilizer, look for an orange-black wire with a connector.

- For ABS - white connector with 4 pins next to the brake pedal.

Common mistakes when replacing fuses and how to avoid them

Even experienced car owners make mistakes that can lead to serious damage. That's what can't do when working with fuses in Sylphy:

• 🔌 Use bugs (pieces of wire or foil). This may cause a fire, especially in high current circuits (e.g. F30 or F45).
• 🔧 Replace the fuse with a higher rating. For example, instead of 15A put 20A. This will cause the wiring to overheat.
• 🚗 Ignore the cause of burnout. If the fuse is blown, then there is a problem in the circuit (short circuit, faulty consumer).
• 📋 Don't check contacts. Oxidized or burnt contacts in the block can cause re-burnout.

Another common mistake is confusing fuses and relays. The relay looks like a small box with legs, and the fuse is a transparent insert with a metal jumper. B Sylphy relays are responsible for:

• 🔋 Ignition (R5);
• 💡 High beam (R10);
• 🚗 Fuel pump (R12);
• ⚡ Radiator fan (R15).

If the problem persists after replacing the fuse, check the corresponding relay. For example, if the headlights do not work and the fuse F5 intact, most likely a faulty relay R10.

FAQ: Frequently asked questions about Nissan Bluebird Sylphy fuses

🔧 Where can I find the fuse diagram for my Sylphy model?

The diagram is usually printed on back of the fuse box cover. If it is missing or has been erased, download the manual for your model on the website Nissan TechInfo (registration required). For Sylphy G11 the diagram is also in this archive.

⚡ Why did it burn out again after replacing the cigarette lighter fuse?

This means that the circuit has short circuit. Most often the problem is:

• Damaged wire going to the cigarette lighter (check under the dashboard);
• Faulty cigarette lighter socket (disassemble and inspect the contacts);
• A connected device with high consumption (for example, a compressor).

Disconnect all devices and check the circuit with a multimeter in continuity mode.

🚗 Is it possible to drive without ABS fuse?

Technically possible, but highly not recommended. Without fuse F40 The ABS system will turn off and the brakes will work as on a regular car without ABS (wheels may lock). In addition, the error message will constantly light up on the dashboard, which distracts you from driving.

If the fuse is blown, replace it as soon as possible. If it burns out again, check ABS sensors on wheels - they may be dirty or damaged.

🔋 Which fuse is responsible for the alarm?

B Nissan Bluebird Sylphy the alarm (if standard) is connected to the fuse F25 (10A) in the cabin block. In models with Intelligent Key fuse is also involved F30 (15A).

If the alarm does not work, check:

1. Fuses F25 And F30;
2. Relay R8 (responsible for central locking);
3. Battery - When the battery is low, the alarm may turn off.

💡 Why does the power window fuse blow out?

Main reasons:

• Freezing glasses — in winter the mechanism experiences increased load;
• Guide wear - if the glass moves with force, the current in the circuit increases;
• Moisture ingress into the window lift motor (often after washing).

Solution: Lubricate the guides silicone grease and check the smooth movement of the glass. If the fuse burns out immediately after replacement, the problem is in the motor and it needs to be replaced.