Nissan Bluebird Sylphy - a reliable sedan, but even it has typical “sores”, one of which is related to fuel pump fuse. If the car suddenly stops starting, the starter turns, but the engine does not catch, it may be the fault. In this article we will look at where the fuel pump fuse is located on Sylphy (including restyled versions G11 And B17), how to check it with a multimeter, and why replacing it with a “powerful” analogue can result in a fire.

Let us warn you right away: a problem with a fuse is often disguised as a malfunction of the pump or relay itself. For example, if after replacing a fuse it blows again, the problem is not with it, but with short circuit wiring or worn pump module. We have collected all the relevant information, including original fuse numbers for different years of manufactureso you don't waste time searching.

Where is the fuel pump fuse located? Nissan Bluebird Sylphy

Depending on the year of manufacture and the sales market (Japan, USA, Russia), the location of the fuse may differ. On most Sylphy (2005–2012, body G11) it is installed in mounting block under the hood, but there are nuances:

  • 🔧 Main fuse box - located to the left of the battery, under the black plastic cover with the inscription FUSE. The fuse you are looking for is usually marked as FUEL PUMP (15A or 20A).
  • 🚗 Additional block - on some versions (for example, Sylphy 1.8 for Japan) the fuse is duplicated in the interior block under the steering wheel, next to the fuel pump relay.
  • ⚠️ Restyled models (B17, 2012+) - the fuse has been moved to the block under the rear seat, next to the pump.

To avoid guessing, use the diagram below. Please note: on Nissan Bluebird Sylphy with engines MR18DE (1.8 l) and QR25DE (2.5 l) fuse rating may differ - this is critical when replacing!

Model and year Fuse location Denomination (A) Original article number
Sylphy G11 (2005–2008) Under the hood, main unit 15A 28515-JA00A
Sylphy G11 (2009–2012, restyling) Under the hood or under the back seat 20A 28515-4M00A
Sylphy B17 (2012–2014) Block under the rear seat 20A 28515-4M01A
Sylphy B17 (2015+) Cabin block (left end of panel) 15A 28515-4M02A

⚠️ Attention: On Nissan Bluebird Sylphy with gas-cylinder equipment (GBO), the fuel pump fuse can be replaced with 25A - this is unacceptable! Installing a fuse with an overrated rating leads to overheating of the wiring and the risk of fire.

Signs of a faulty fuel pump fuse

How do you understand that the problem is in the fuse and not in the pump or relay itself? Here are the key symptoms:

  • 🔥 The engine does not start, but the starter turns - a classic sign of lack of fuel supply.
  • 🛢️ When you turn on the ignition, you can’t hear the characteristic buzzing of the pump (on Sylphy it is located under the rear seat).
  • 🔌 The fuse is apparently intact, but when checked with a multimeter it shows a break (found on fakes).
  • 🔄 After replacing the fuse, it burns out again - this is a signal of a short circuit or pump malfunction.

Important: if the fuse blows immediately after installation, do not try to install a more “powerful” one - this will lead to melting of the wiring. In such cases, it is necessary to diagnose the pump circuit for short circuit.

📊 What symptom have you encountered?
  • The engine does not start, the starter turns
  • No pump buzzing when ignition is turned on
  • The fuse blows again
  • Other

On Nissan Bluebird Sylphy with the system Nissan Intelligent Key (keyless entry) if the fuel pump fuse is faulty, an error may light up on the panel P0190 (fuel pressure sensor circuit malfunction). This is an indirect sign!

How to check a fuel pump fuse with a multimeter

Visual inspection of the fuse is not always accurate - sometimes the internal jumper burns out, but the body remains intact. To check you will need a multimeter (or a simple test):

  1. Set the multimeter to continuity test mode (diode or resistance icon).
  2. Touch the fuse terminals with the probes. If it is working, the device will show 0 ohm (or beeps).
  3. If there is a break, the resistance will tend to infinity (OL).

An alternative method is to replace the fuse with a known good one with the same rating (for example, from a stove fan). If the pump works after replacement, the problem is solved.

Turn off the ignition and remove the battery terminal|Remove the fuse with pliers or tweezers|Test with a multimeter or replace with a working one|Turn the ignition key (without starting) - you should hear the sound of a pump-->

⚠️ Attention: On Nissan Bluebird Sylphy with the system ECO Mode When checking the fuse, make sure that the fuel economy mode is turned off - it can block the pump from working during diagnostics.

Step-by-step replacement of the fuel pump fuse

If the fuse is blown, you can replace it yourself in 5–10 minutes. The main thing is to use the part with correct denomination (see table above). Instructions for Sylphy G11/B17:

  1. Disconnect the battery - remove the negative terminal to avoid a short circuit.
  2. Find the mounting block (under the hood or in the cabin, depending on the model).
  3. Remove the unit cover - it is fixed with latches or screws (on Sylphy Usually it is enough to press the clips).
  4. Remove the fuse special forceps (included with the machine) or tweezers. Never use metal objects!
  5. Install a new fuse with the same denomination. On Sylphy with engine QR25DE the denomination must be strictly 20A.
  6. Check your work — turn on the ignition (without starting the engine) and listen to the sound of the pump.

If after replacement the fuse blows again, the problem is deeper. Possible reasons:

  • 🔌 Short circuit in the wiring (the harness under the rear seat often suffers).
  • 🛢️ Malfunction of the fuel pump itself (jammed rotor or melted winding).
  • 🔋 Problems with the fuel pump relay (on Sylphy it is usually located next to the fuse).
💡

On Nissan Bluebird Sylphy after 2012, the relay and the fuel pump fuse are often combined into one module. If replacing the fuse does not help, check the relay - it may be “sticking” due to moisture.

Typical mistakes when replacing a fuse

Even experienced car owners make mistakes that lead to repeated breakdowns or even fire. That's what can't do:

  • 🔥 Install a fuse with overvalued (for example, 25A instead of 15A). This is fraught with melting of the wiring and fire.
  • 🛠️ Using “bugs” made of foil or wire is a temporary solution that can damage the engine ECU.
  • 🔧 Ignore the fuel pump relay check - on Sylphy it often fails in parallel with the fuse.
  • 💡 Do not clean the fuse box contacts - oxidation leads to poor contact and repeated burnouts.

On Nissan Bluebird Sylphy with engine MR18DE (1.8 l), pay special attention to the condition of the fuel pump connector under the rear seat - moisture often accumulates there, which leads to a short circuit.

What happens if you ignore a blown fuse?

If you constantly replace the fuse without finding the cause, this can lead to:

1) Melting of wiring under the hood or in the cabin.

2) Failure of the fuel pump (due to unstable voltage).

3) Fire in the area of the fuel tank - especially dangerous on cars with gas equipment.

4) Damage to the engine ECU (on Sylphy with the system Nissan ECCS).

How to extend the life of a fuel pump fuse

To make the fuse last longer, follow these simple recommendations:

  • 🔌 Regularly check the condition of the contacts in the mounting block - oxidation increases resistance and leads to overheating.
  • 🛢️ Do not allow the fuel tank to become empty - on Sylphy the pump is cooled by gasoline, and running “dry” reduces its service life.
  • 🔧 When installing an alarm or additional equipment (for example, a subwoofer), use separate fuses so as not to load the fuel pump circuit.
  • 💧 Make sure the gas tank flap is sealed - water getting into the tank accelerates corrosion of the pump and increases the risk of short circuit.

On Nissan Bluebird Sylphy with a mileage of more than 150 thousand km, it is recommended to check the condition of the fuel pump and its connectors every 30 thousand km. This will help avoid sudden breakdowns.

💡

If the fuel pump fuse blows more than once every six months, the problem is not in it, but in the wiring or the pump. Diagnostics is required!

FAQ: Frequently asked questions about the fuel pump fuse Nissan Bluebird Sylphy

Is it possible to drive without a fuel pump fuse if you install a jumper?

No! This is extremely dangerous. Without a fuse, any short circuit in the pump circuit will lead to melted wiring or a fire. On Sylphy With a plastic fuel tank, the risk of fire is especially high.

Which fuse to put on Nissan Bluebird Sylphy with HBO?

The rating should remain standard (15A or 20A depending on the model). Installing a 25A or 30A fuse, which is sometimes recommended by gas workers, violates the safety of the circuit. The correct solution is to diagnose the cause of the burnout (an incorrectly installed LPG reducer is often to blame).

Where is the fuel pump relay located? Sylphy G11?

On most versions it is located in the same block as the fuse (under the hood or under the rear seat). The relay is usually marked as FUEL PUMP RELAY and has a standard size 12V 40A. To check, you can swap it with the fan relay (they are identical).

Why does the fuel pump not work after replacing the fuse?

Possible reasons:

  1. Fuel pump relay is faulty.
  2. Broken wiring between the fuse and the pump (check the connector under the rear seat).
  3. The pump itself burned out - on Sylphy with a mileage of more than 200 thousand km this is a serious problem.
  4. The immobilizer is faulty (on models with Nissan NATS).

Start by checking the voltage at the pump connector with the ignition on (should be 12V).

What analogues of the original fuse can be used?

Fits standard size fuses ATO/ATC (knife) from trusted brands:

  • Littlefuse (episode 297)
  • Bussmann (ATC series)
  • Hella (article 8ZF 355 631-121)

Avoid cheap Chinese analogues - they often have a low cross-section of the jumper and burn out at the slightest load.