Nissan Bluebird Sylphy fuel pump fuse: location, check and replacement

Owners Nissan Bluebird Sylphy (especially models G11 And B17 with engines HR16DE or MR20DE) often encounter the problem of the engine suddenly stopping or being unable to start. In 70% of such cases, it is not the fuel pump itself that is to blame, but its fuse or relay. This article will help you determine exactly where the fuel pump fuse is located on your Sylphie, how to check it with a multimeter, and what to do if it burns out.

We will analyze not only the standard arrangement of elements in the mounting block, but also hidden nuances for restyled versions 2014–2020, where the scheme may differ. You will also find out what errors (P0190, P0627) indicate problems with power supply to the pump, and how to avoid re-blowing the fuse after replacement.

Where is the fuel pump fuse on a Nissan Bluebird Sylphy?

B Nissan Bluebird Sylphy The fuel pump fuse is located in main mounting block (aka fuse box in the cabin). The exact location depends on the year of manufacture and configuration:

• 🔧 Dorestyle (2012–2014): fuse #31 (15A) in the left block under the steering wheel.
• 🔄 Restyle (2014–2020): fuse #28 (15A) in the right block (next to the fuel pump relay).
• ⚡ Hybrid versions: additional fuse #10 (10A) in the block under the hood.

To get to the block:

1. Open the driver's door and remove decorative cover under the steering wheel (it is secured with latches).
2. Find a black or gray plastic block with a lid with a diagram on it.
3. Remove the cover by pressing the latches on the sides.

There is a hint on the block cover: the gas station icon 🛢️ usually indicates the required fuse. If there is no diagram, rely on the numbers #28 or #31.

⚠️ Attention: On some versions for Asia (for example, with an engine HR15DE) the fuel pump fuse can be combined with the fuse ECU (#15). Before replacing, check the diagram on the block cover!

How to check a fuel pump fuse with a multimeter

If the engine does not start or stalls a few seconds after starting, first check the fuse. You will need:

• 🔍 Multimeter (or tester with dial mode).
• 🔧 Tweezers or plastic tweezers from the fuse kit.
• 📖 Block diagram (you can take a photo of the cover in advance).

Check procedure:

1. Turn off the ignition and disconnect the negative terminal of the battery (required!).
2. Remove the fuse with tweezers (do not handle it with your hands - oxidation impairs contact).
3. Put the multimeter into test mode 200Ω or "calls".
4. Touch the probes to the fuse contacts. If resistance 0Ω (or a beep sounds) - the fuse is good. If OL (break) - burned out.

Also inspect the fuse visually: a blown fuse usually has melted body or broken thread inside. If the fuse is intact, but the problem remains, check fuel pump relay (it is located nearby, usually under number #5 or #6).

Symptom	Probable Cause	Action
The engine does not start, the starter turns	Fuel pump fuse or relay blown	Check the fuse, replace the relay
The engine stalls 2–3 seconds after starting	The relay is faulty or the pump power supply circuit is open.	Check the voltage at the pump connector
Lights up Check Engine with an error P0190	Problems in the fuel pump circuit (fuse, relay, wiring)	Diagnose with a scanner, check power supply

Causes of blown fuel pump fuse

If a fuse is blown, you can't just replace it with a new one - you need to find root cause. Most often this is:

• ⚡ Short circuit in the fuel pump circuit (for example, due to frayed wiring under the rear seat).
• 🔋 Faulty fuel pump: If the pump starts to draw more current (due to wear on the brushes, for example), the fuse will blow.
• 💧 Moisture ingress into the mounting block (a common problem after washing or rain with the windows open).
• 🔌 Oxidation of contacts in the pump connector or in the fuse box.

The most dangerous situation is when the fuse blows immediately after replacement. This means that the circuit has short circuit (short circuit). In this case:

1. Disconnect the fuel pump connector (it is located under the rear seat, under the hatch).
2. Install a new fuse.
3. If it does not burn out, the problem is in the pump.
4. If it burns out again, look short circuit in the wiring from the block to the pump.

⚠️ Attention: If after replacing the fuse the fuel pump works, but after a few days the problem repeats, do not ignore it! This may lead to fire due to overheating of the wiring. Be sure to check the circuit for current leaks.

Fuel pump relay: where is it located and how to check

Fuel pump relay Nissan Bluebird Sylphy usually located next to the fuse in the same mounting block. His numbers:

• #5 - for versions before 2014.
• #6 — for restyled models (2014–2020).

To test the relay:

1. Remove the relay from its socket (pull gently upward).
2. Look at the contacts: if they melted or blackened - the relay is faulty.
3. Take a working relay (for example, from a heater fan) and install it in place of the suspicious one. If the fuel pump works, the problem is in the relay.

You can also check the relay with a multimeter:

• Contacts 85 And 86 (managers) must have resistance 50–120Ω.
• When submitting 12V on 85 And 86 contacts 30 And 87 must close (resistance 0Ω).

How to distinguish a faulty relay from a working one?

A faulty relay often makes a weak click or does not click at all when the ignition is turned on. There may also be traces of plastic melting or contact oxidation. If, after replacing the relay with a known working one, the problem disappears, the old relay must be replaced.

Errors related to the fuel pump fuse

If the fuel pump fuse or relay is faulty, the instrument panel may light up. Check Engine. The most common mistakes:

Error code	Description	Possible reason
P0190	Fuel pressure sensor circuit malfunction	Fuse, relay, wire break
P0627	Fuel pump control circuit malfunction	Blown fuse or relay
P0171/P0174	Lean fuel mixture	The fuel pump is not pumping enough fuel (the fuse may be at fault)

To accurately determine the cause, you need to:

1. Connect a diagnostic scanner (for example, ELM327 or Launch CReader).
2. Count errors and real time parameters (especially fuel pressure).
3. If the pressure 0 bar when the ignition is on, there is a problem with the power supply to the pump.

Sometimes mistakes P0190 or P0627 appear due to contact oxidation in the fuel pump connector. To rule out this cause:

• Remove the rear seat and open the fuel pump flap.
• Disconnect the connector and clean the contacts alcohol solution.
• Check the voltage at the connector with the ignition on (there should be 12V).

How to replace a fuel pump fuse: step-by-step instructions

If you have confirmed that the fuse is blown, replace it using the following procedure:

Important details:

• 🔢 Use fuse only the same denomination (usually 15A). Installing a fuse on 20A or more may lead to fire!
• 🔧 If the fuse is too tight, do not put pressure on it. Perhaps the contacts in the socket are deformed (you need to carefully bend them with a needle).
• 📸 Take a photo of the location of the fuses to removal so as not to be confused during installation.

After replacement:

1. Connect the battery.
2. Turn on the ignition (without starting the engine) and listen: you should hear buzzing sound fuel pump (2–3 seconds).
3. If there is no sound, check the relay or wiring.

⚠️ Attention: If after replacing the fuse the fuel pump does not turn on and the fuse is blown again - do not try to start the engine. This may indicate short circuit in the circuit, which will lead to damage to the wiring or even fire. Contact an auto electrician!

Frequently asked questions and problems

In this section we have collected answers to typical questions from owners Nissan Bluebird Sylphyassociated with the fuel pump fuse.

Why does the fuel pump fuse burn out again after replacement?

This means that the circuit has short circuit or increased load. Most often the culprits are:

• Frayed wiring under the rear seat (check the harness near the fasteners).
• Faulty fuel pump (consumes more current).
• Short circuit in the pump connector (oxidation or moisture ingress).

Solution: Disconnect the fuel pump connector and check if the fuse blows without load. If yes, look for it short circuit in the wiring. If not, the problem is in the pump.

Is it possible to drive without a fuel pump fuse if it is blown?

Absolutely not! The fuse protects the circuit from overload. If it is removed, in the event of a short circuit it may:

• Wiring burns out (even to the point of fire).
• Failure ECU (engine control unit).
• The fuel pump is damaged.

If a fuse blows too often, find the cause rather than removing it!

Where to buy a fuse for Nissan Bluebird Sylphy?

Standard fuses ATO/ATC (15A) sold:

• In any auto store (cost: 20–50 rubles).
• On AliExpress (set of 10 pieces - ~100 rubles).
• At dealerships Nissan (original art. 28510-JK00A, but it's just a standard fuse).

Do not buy “reinforced” fuses with an overrated rating - they are dangerous!

How to check the fuel pump if the fuse and relay are good?

If there is power at the pump connector (12V), but it doesn't work:

1. Remove the pump (unscrew the hatch under the rear seat).
2. Connect it directly to the battery (for a short time!).
3. If the pump does not hum, it is faulty (replace).
4. If it buzzes, there is a problem with the signal from ECU or pressure sensor.