Vehicle electrical system Nissan Terrano 2 (the second generation, also known as the Dacia Duster in some markets or the Nissan Terrano III depending on the year and region) is a complex network of components that requires competent maintenance. When the power window stops working, the radio fails, or the dashboard goes out, the first thing the owner should check is the integrity of the fuses.
Correct diagnosis begins with understanding the on-board network protection architecture. Unlike older models, where the fuses were located chaotically, in modern Nissan Terrano 2 they are strictly grouped into specialized blocks. Knowing the exact location of these blocks and deciphering their contents saves time and allows you to avoid unnecessary expenses in car services.
Location of main fuse boxes
On Nissan Terrano 2 There are two main places where protective elements are concentrated: the engine compartment and the vehicle interior. The first block is responsible for power units and systems that operate when the engine is running, such as the generator, starter, cooling system and radiator fan. Access to it is through a special housing with markings.
The second, cabin unit, is located in the dashboard on the driver's side. It is usually hidden behind a removable plastic cover, which is located on the side panel of the dashboard. To access it, you need to open the driver's door and unclip the cover latches. This is where the fuses responsible for comfort are located: interior lighting, audio system, cigarette lighter and power windows.
Sometimes you may need additional access to the fuses that control the engine control unit (ECU). In some trim levels Nissan Terrano 2 relays and additional fuses may be located in a separate box next to the battery or in a niche behind the glove box. Always check the technical documentation for your specific modification.
Detailed decoding of the engine compartment block
Engine compartment fuse box Nissan Terrano 2 contains high power elements designed to operate with currents up to 30-40 Amperes. Here you will find protection for the fuel pump, fuel injection system, air conditioning and headlight control system. Improperly replacing a fuse in this area can cause serious damage to the electronics.
When you open the lid, you will see a diagram printed on the inside of the plastic. If the circuit is erased or you have lost the instructions, you need to use a multimeter to check. Each fuse has its own number and rating, indicated by the color of the case and the number on the top. Rated current is a critical parameter that cannot be ignored.
- 🔋 Battery circuit (BAT): Protects the main power line coming directly from the battery.
- 💡 Headlights and light (HEAD/FOG): Responsible for the operation of the headlights and fog lights.
- 🌡️ Cooling fan (COOL FAN): Critical to prevent engine overheating.
They click when certain systems are turned on. If the fuse is intact and the system does not work, the problem may be in the relay. The relay is checked by replacing it with a known good similar device.
⚠️ Attention: When working in the engine compartment, be sure to disconnect the battery terminal before removing or installing fuses to avoid short circuits caused by accidental contact with tools.
Cabin unit and its functions
Salon block Nissan Terrano 2 is the most accessible for the driver. Circuit protection elements are concentrated here, the operation of which is required constantly, even when the engine is turned off. This includes power supply for the radio, button illumination, cigarette lighter and security circuits.
The location of the fuses in this block is numbered. The numbers usually go from top to bottom or left to right. Color coding helps to quickly identify the desired element: yellow - 20A, red - 10A, blue - 15A. However, you cannot rely on color alone, since the color scheme may differ in different batches or after replacement.
If your cigarette lighter or charger stops working, first check the fuse marked CIGAR or POWER OUTLET. In most cases this is a 15A element. Also, the fuses responsible for the lifting windows and central locking, especially if the mechanisms are jammed or there is mechanical resistance.
- 🎵 Audio/Navigation: Power supply for the multimedia system and navigator.
- 🔓 Door Lock: Protection of the central locking circuit and door locking.
- 💡 Interior Lights: Interior lighting, trunk lighting and instrument lighting.
- Engine compartment block
- Salon block
- Block behind the glove compartment
- I don't know where to look
Table of main fuses and their purpose
For ease of diagnosis, below is a table with the most commonly used fuses in Nissan Terrano 2. Data may vary slightly depending on year and trim level, so use this information as a basic guide.
| Number/Designation | Denomination (A) | Purpose of the circuit | Typical fault |
|---|---|---|---|
| F1 / IGN | 10 | Ignition, ECU | Car won't start, no spark |
| F4 / CIGAR | 15 | Cigarette lighter, socket | Charging and radio does not work |
| F7 / WIPER | 25 | Windshield wiper | Wipers don't work |
| F12 / FAN | 30 | Interior fan | Heater/air conditioner not blowing |
| F18 / ABS | 10 | Anti-lock braking system | The ABS light on the panel is on |
Please note that the table shows average data. If your car is equipped with additional equipment, such as an alarm or parking sensors, they may use individual fuses installed by the technician during installation, rather than the factory ones.
When replacing, always use a fuse with the exact same rating. Installing an element with a high current can lead to melting of the wiring and a fire, since the protection will not operate in time.
⚠️ Attention: Never try to bridge a blown fuse with foil, a paper clip or a piece of wire. This is a direct path to a car wiring fire.
Diagnostics and replacement of fuses
The replacement process begins with a visual inspection. Remove the fuse using a special clip, which is usually attached to the block cover or riveted to the fuse itself. Inspect the metal jumper inside the plastic housing. If the jumper is torn or melted, the element must be replaced.
For a more accurate diagnosis, if visual inspection does not give results, use a multimeter. Switch the device to resistance measurement or circuit continuity testing mode (audible ringing). Apply test leads to both metal contacts of the fuse. If the multimeter beeps or shows zero resistance, the fuse is good.
If the fuse blows immediately after replacement, this indicates a short circuit in the circuit. In this case it is necessary to look for the reason in wiring or connected equipment. Simply replacing the fuse will not help here and will lead to re-blowout.
☑️ Preparing to replace the fuse
It is important to consider that fuses of a different type may be installed in the circuit (so-called large “knife” fuses in the engine compartment). They are also subject to visual control rules, but can be more difficult to access due to cramped spaces.
Frequent problems and nuances of operation
Owners Nissan Terrano 2 Often faced with the problem of cigarette lighter fuses blowing. This is due to the connection of powerful inverters or chargers that consume current that exceeds the protection capabilities. The standard limit for this circuit is 15A, which is equivalent to approximately 180-200 watts of power.
Another common problem is oxidation of the contacts in the fuse box. Due to changes in temperature and humidity, especially in the engine compartment, the contacts may become coated, which leads to increased resistance and heating. Regular cleaning of contacts and checking terminal tightness will help avoid such situations.
It is also worth paying attention to the relay. B Nissan Terrano 2 relays often fail due to burning of the contacts inside. If you hear a distinctive crackling or clicking sound from the fuse box when you turn on the system, the problem is most likely with the relay, not the fuse.
- 🔍 Oxidation: Regularly check the cleanliness of the contacts in the blocks.
- ⚡ Overload: Avoid connecting powerful consumers to the cigarette lighter.
- 🛠️ Relay: If you suspect a relay, change them in pairs or check them with a tester.
Relay block and its specifics
In addition to fuses, in blocks Nissan Terrano 2 There are relays that control the switching of high current circuits. The relay works like an electronic switch, controlled by a low current from the ECU or switch. The main relays include the fuel pump relay, cooling fan relay, headlight relay, and windshield wiper relay.
The location of the relay is usually indicated on the block diagram. They have a standard shape with markings on the body. If you suspect a bad relay, try carefully swapping it with an identical relay from a different circuit (for example, the horn relay and headlight relay are often the same). If the problem moves with the relay, then it is the culprit.
Feature Nissan Terrano 2 is that some relays may be integrated into the control unit or have a non-standard pinout. In such cases, replacement requires caution and careful study of the contact diagram. A connection error can lead to the failure of the entire system.
⚠️ Attention: When replacing a relay, make sure that you use an element with identical markings and pinouts. Incorrect connection may cause a short circuit within the relay itself.
Prevention and maintenance of the electrical system
To prevent frequent breakdowns of the electrical system, it is recommended to periodically check the fuse boxes. Particular attention should be paid to the unit in the engine compartment, as it is exposed to high temperatures, moisture and reagents.
Humidity is the main enemy of electrics. If you notice traces of water or condensation inside the unit, you must immediately dry it and find the cause of the moisture. The tightness of lids and seals must be perfect. In winter, when powerful heaters and purifiers are used, the load on the network increases and old fuses may fail.
It is also useful to have a set of spare fuses of different ratings and a universal set of relays in your car. This will allow you to quickly solve the problem on the road without having to call a tow truck or look for the nearest auto parts store.
If you are not confident in your abilities or cannot find the cause of the malfunction, it is better to contact a qualified auto electrician. Independent experiments with “spark testing” can lead to failure of expensive electronic control units.
Where is the interior fuse box located on the Nissan Terrano 2?
The interior fuse box is located on the left side panel of the dashboard, on the driver's side. To access it, you need to open the driver's door and remove the plastic cover by unlatching the latches.
How can you tell if a fuse has blown?
The most reliable way is visual inspection through a transparent case: the metal jumper inside must be intact. If the jumper is broken, the element is faulty. You can also use a multimeter in dialing mode.
Is it possible to install a fuse of a higher rating?
Absolutely not. A fuse is designed to protect a specific circuit. Installing an element with a high current will lead to the fact that if it is overloaded, it will not burn out, but the wiring will burn out or the device will burn out, which can cause a fire.
What to do if the cigarette lighter does not work?
First, check the fuse marked CIGAR or POWER OUTLET in the passenger compartment. If it is intact, check the cigarette lighter itself for oxidation of the contacts or a short circuit in the connected device.
Where can I find the fuse diagram if it is lost?
Diagrams are often marked on the inside of fuse box covers. If the inscription is erased, you can find the current diagram on the Internet by searching for “Nissan Terrano 2 fuse diagram [year of manufacture]” or refer to the official operating manual.