Nissan Bluebird U14 - a legendary sedan produced from 1996 to 2001, which still remains a popular choice on the secondary market. Like any car with significant mileage, it requires attention to the electrical system, and fuses are the first line of defense against serious breakdowns. In this article we will look at where the fuse boxes are located in U14, how to check and change them correctly, and also consider the typical problems that owners encounter.
Many car owners are faced with a situation where the cigarette lighter, headlights or windshield wipers suddenly stop working. In 90% of cases, a blown fuse is to blame. But not everyone knows that in Bluebird U14 there are already three blocks - and each is responsible for its own systems. We will analyze each of them in detail, provide current diagrams and give practical advice on how to avoid diagnostic errors.
Where are the fuse boxes located in Nissan Bluebird U14
Unlike many modern cars, where all the fuses are collected in one place, U14 they were distributed into three blocks. This complicates the search, but makes the system more reliable. Let's look at each block in detail:
1. Main unit in the cabin — located to the left of the steering column, under the plastic cover. To gain access, you need to unclip two latches and carefully remove the panel. The fuses for most consumers are concentrated here: lighting, cigarette lighter, audio system, etc. Important: in some modifications of the U14 (for example, with air conditioning), the circuit may differ - more on that below.
2. Block under the hood — located next to the battery, in a plastic box with a lid. High current fuses (30-100A) are located here, responsible for the generator, starter, injection system and other critical components. This block is often ignored, although this is where you should look for the reason if the car does not start or stalls while driving.
3. Additional unit in the trunk - not found in all trim levels, but if yours U14 equipped with a rear windshield wiper, heated seats or a premium audio system, then look for it under the trim on the left side. Here there are usually 10-15A fuses for auxiliary equipment.
- In the salon block
- Under the hood
- In the trunk
- I don't know where to look
Fuse diagram Nissan Bluebird U14 with transcript
Below is the current diagram for most modifications U14 (1996-2001). Please note that for vehicles with diesel engine (LD20, CD20) and gasoline engines (SR20DE, QG18DE) there may be slight differences. If your equipment is different, check the instruction manual.
| Number | Denomination (A) | Purpose | Notes |
|---|---|---|---|
| 1 | 10 | Dimensions lamps (left side) | Often burns out when installing LEDs |
| 7 | 15 | Cigarette lighter | Burns out when connecting powerful devices (for example, a compressor) |
| 12 | 20 | Heater fan | If the fuse is intact, but the fan does not work, check the relay K3 |
| 18 | 10 | Engine control unit (ECU) | Never replace with a fuse of a higher rating - this will lead to ECU failure! |
| 23 | 30 | Windshield wipers | If they operate frequently, check the wiper motor for jamming. |
A complete diagram for your modification can be found on the back of the fuse box cover. If it is not there, download it official guide (section Fuses and Relays). For vehicles with automatic transmission (RE4F03A) fuse added F25 (10A) — he is responsible for the automatic transmission solenoids.
What to do if the scheme does not match?
If your circuit differs from the one above, most likely you have one of the following modifications:
- Nissan Bluebird U14 with CD20T engine (diesel with turbine) - fuses for the turbocharger have been added.
- Exclusive or Autech version — have an additional unit for climate control.
- Export versions for Europe - may have different fuse markings for daytime running lights.
In this case, we recommend that you contact the VIN decoder or order a diagram using the body catalog number.
How to check the fuse in Nissan Bluebird U14: step by step instructions
Checking the fuse is the first diagnostic procedure that every owner should be able to do. U14. To do this you will need:
- 🔧 Set of screwdrivers (for removing block covers)
- 🔦 Flashlight (lighting in blocks is often insufficient)
- 📊 Multimeter or tester (optional, but convenient)
- 🧲 Tweezers (for removing fuses)
Verification algorithm:
- Turn off the ignition and remove the negative terminal from the battery (this is mandatory for the fuses under the hood!).
- Find the problematic fuse using the diagram (see section above).
- Remove it with tweezers and inspect it against the light: if the thread inside is burned out, the fuse must be replaced.
- If visually everything is normal, check with a multimeter in continuity mode: touch the probes to the fuse contacts. A beep means it is working properly.
Turn off ignition
Remove the battery terminal (for units under the hood)
Prepare a flashlight and tweezers
Check the fuse assignment diagram -->
Common mistake: many owners U14 Check fuses by eye without using a multimeter. This is fraught with the fact that a broken thread may not be noticeable to the naked eye, especially if the fuse is old and covered with oxide. Always use the tester for an accurate diagnosis!
⚠️ Attention: Never test fuses for sparks by closing the contacts with a screwdriver or wire. This can lead to a short circuit and damage the control unit!
Typical fuse problems and their solutions
Owners Nissan Bluebird U14 Often faced with repeated blowing of fuses after replacement. This indicates a more serious problem in the electrical circuit. Let's look at the most common cases:
1. The cigarette lighter fuse (F7, 15A) burns out immediately after replacement
Reason: short circuit in the cigarette lighter circuit or connection of devices with current consumption higher than 15A (for example, a car vacuum cleaner). Solution:
- 🔌 Check the cigarette lighter socket for melting or oxidation.
- 🔍 Inspect the wiring from the cigarette lighter to the fuse box - the insulation under the dashboard is often frayed.
- 🚫 Do not connect devices with a power of more than 180 W (for example, compressors) to the cigarette lighter. Use a power strip with a separate fuse.
2. Heater fan fuse blows (F12, 20A)
Reason: jamming of the stove motor or wear of the brushes. Solution:
- 🌀 Remove the fan motor (access from the glove compartment) and check if it rotates freely.
- 🔧 If the motor is working properly, but the fuse is still on, check the relay
K3in the salon block. - 💨 Temporary solution: you can install a 25A fuse, but this will not eliminate the cause!
3. ECU fuse (F18, 10A) burns out when starting the engine
Cause: Sensor wiring problems (such as the crankshaft position sensor) or a short in the ECU wiring harness. Solution:
- 🔍 Inspect the wiring harness coming from the ECU to the sensors - it often rubs against the intake manifold.
- 📊 Check the resistance of the sensors with a multimeter: the crankshaft sensor should show 500-700 Ohms.
- 🚗 If the problem remains, contact a diagnostician to check the ECU on a bench.
If the fuse burns out repeatedly, do not rush to install a “bug” (a wire instead of a fuse). This may cause a fire! It is better to temporarily disconnect the problem consumer (for example, by removing the relay) and drive to the service station.
How to replace a fuse correctly: tips and mistakes
Replacing a fuse seems like a simple operation, but there are nuances here that will help avoid problems in the future. Here are the key rules:
1. Only use fuses of the correct rating. Installing a 20A fuse instead of 10A may result in melted wiring or failure of the control unit. B Bluebird U14 It is especially critical to observe the fuse rating ECU (F18) And ABS (F21).
2. Don't use bugs. Replacing a fuse with wire or foil is a recipe for a short circuit. If a fuse blows repeatedly, look for the cause rather than masking it.
3. Check your contacts. Oxidized or burnt contacts in the fuse box can cause poor contact and repeated burnout. Clean them with fine sandpaper or a special spray (for example, Kontakt 60).
4. Monitor the quality of fuses. Cheap Chinese fuses often have a low-quality thread that burns out at the slightest load. Buy original Nissan (catalog number 24540-31U00) or proven analogues from Bosch or Hella.
If after replacing the fuse the problem remains (for example, the headlights do not work), check the corresponding relay. B Bluebird U14 Relays and fuses often work in pairs.
⚠️ Attention: When replacing fuses under the hood, always remove the negative terminal from the battery! Even turning off the ignition does not guarantee the absence of voltage on some circuits (for example, on the generator).
Where to buy fuses for Nissan Bluebird U14: prices and analogues
Fuses for U14 You can buy it in several places, but it is important to choose a reliable supplier so as not to run into a fake. Here are the main options:
1. Official dealers Nissan
Pros: guaranteed quality, original spare parts.
Cons: high price (from 150 rubles per fuse).
Catalog numbers:
- 📋 Standard fuses (10-30A):
24540-31U00 - 📋 High current fuses (40-100A):
24540-31U10 - 📋 Relay:
25230-31U00(universal for most circuits)
2. Car stores and online platforms
Popular analogues that are suitable for U14:
| Brand | Article | Price (for 10 pcs.) | Notes |
|---|---|---|---|
| Bosch | 0 337 001 010 | 80-120 rub. | High quality thread, corrosion resistant |
| Hella | 8ZF 357 003-031 | 100-150 rub. | Suitable for high loads |
| Valeo | 375001 | 70-100 rub. | Budget option, but lower quality |
3. Showdowns and second-hand booksellers
You can find used fuses from U14 at a showdown, but this is a lottery - it is not known what condition they are in. Price: 20-50 rub. per piece. We recommend buying only if you are confident in the seller.
Tip: buy fuses as a set (10 pieces of each rating) - it’s cheaper and you’ll always have a supply in case of emergency replacement. Store them in the glove compartment in their original packaging to prevent oxidation.
Frequently asked questions about fuses Nissan Bluebird U14
Is it possible to install a fuse of a higher rating if it constantly burns out?
No! Increasing the fuse rating may lead to melting of the wiring or failure of the control unit. If the fuse burns out repeatedly, look for the cause (short circuit, faulty consumer) or contact an auto electrician.
Where to find a fuse diagram for your modification U14?
The diagram is usually printed on the back of the fuse box cover. If it is not there, download the instruction manual for your model on the website Nissan Manuals (please indicate the exact year and engine type). For diesel versions (CD20) the scheme is different!
What should I do if, after replacing the fuse, the device still does not work?
Check:
- The corresponding relay (for example, for headlights this relay
K7). - Integrity of wiring from fuse to consumer.
- The consumer itself (for example, a light bulb or motor).
If the problem persists, the control unit may be faulty (for example, BCM for lighting or ECU for the engine).
What tool is needed to replace fuses under the hood?
You will need:
- 10 mm wrench (for removing battery terminals).
- Plastic tweezers (usually included with the machine).
- Flashlight (lighting in the engine compartment is weak).
- Multimeter (to check the voltage on the contacts).
Do not use metal screwdrivers to remove fuses - this may damage the contacts of the unit!
Which fuses are most likely to blow? Bluebird U14?
According to owner statistics, the following most often fail:
- Cigarette lighter (
F7, 15A) - due to the connection of powerful devices. - Heater fan (
F12, 20A) - due to wear of the motor. - Windshield wipers (
F23, 30A) - when the mechanism jams. - Audio system (
F10, 10A) - in case of a short circuit in the radio.
We recommend that you carry spare fuses of these ratings with you.