Vehicle operation Nissan Terrano A 2018 model inevitably confronts the owner with the need to diagnose electrical systems. A sudden failure of the windshield wipers, a cigarette lighter that stops working, or non-functioning headlights often indicate burnt-out protective elements. Fuses are the first line of defense of the on-board network against short circuits and overloads.
Many owners Nissan Terrano believe that troubleshooting is a complex process that requires in-depth knowledge of electrical engineering. In fact, the protection system is built on a standardized principle, where each element has a clear purpose and place. Knowing the location of the blocks and the explanation of the markings, you can fix the problem yourself in a matter of minutes, without resorting to the services of service centers.
In this material, we will analyze in detail the electrical protection configuration for the 2018 model, provide current diagrams and give step-by-step instructions for replacing burnt-out elements. It is important to understand that the use unsuitable for face value fuses can lead to fire or failure of expensive control units.
Location of main fuse boxes
In the car Nissan Terrano 2018 there are two main places where protective elements are located: the engine compartment and the interior. Each of these blocks is responsible for different consumer groups. The engine compartment usually contains elements that protect power circuits and equipment operating in high temperature environments.
The cabin unit is located in an accessible place for the driver and passengers. In versions with a 2.0 liter (MR20) or 1.6 liter (H4M) engine, the location may differ slightly depending on the assembly market, but the general logic remains the same. The block in the cabin is often hidden behind a decorative trim that needs to be carefully removed.
To access the fuses in the engine compartment, you need to open the hood and unfasten the plastic cover latches. The lid is usually held in place by latches that can be easily pressed with your fingers. Inside, you'll see a circuit map taped to the inside of the lid, which serves as a basic guide.
The cabin unit is located to the left of the steering column. To get to it, you will need to open the side panel (cover), which blocks access to the block. It is attached with plastic clips. When removing, be careful not to break the fasteners, as they are fragile in the cold.
- π The unit in the engine compartment is responsible for the starter, generator and headlights.
- π The interior unit protects the audio system, power windows and cigarette lighter.
- π Block covers have sticker diagrams for quick identification.
β οΈ Attention: Before starting any work to find or replace fuses, be sure to turn off the ignition and remove the key from the lock. This will prevent accidental shorting and operation of the relay under load.
Some specific protection elements such as relay or powerful mounting blocks, can be placed in separate buildings next to the main unit. In the car Nissan Terrano 2018 relays are often located directly in the fuse box, making diagnosis easier.
Scheme and decoding of denominations
Each fuse is color coded and numbered to indicate its rated current in amperes. The color of the case clearly determines the current strength, which allows you to quickly select a replacement without using a multimeter. For example, yellow cells are typically rated at 20 amps, while red cells are typically rated at 10 amps.
For the system to operate correctly, it is important not only to know the current strength, but also to understand which node it protects. The table below shows the most frequently burned out elements for the model Nissan Terrano 2018 with their description.
| Number | Color | Denomination (A) | Protected node |
|---|---|---|---|
| 1 | Red | 10 | Engine ECU and relay |
| 2 | Yellow | 20 | Window lifters |
| 3 | Blue | 15 | Cigarette lighter and socket |
| 4 | Orange | 30 | Stove fan |
| 5 | Green | 7.5 | Interior lighting lamps |
Understanding labeling is critical. If you see "10" it means 10 Amps. Using an element with a higher rating (for example, 20 A instead of 10 A) will lead to the fact that in the event of a short circuit, it is not the fuse that will burn out, but the wiring or the consumer itself.
Sometimes a situation arises when the fuse visually looks intact, but the circuit does not work. In such cases, it is necessary to use a tester or multimeter to check the patency. Visual inspection metal jumper inside the case does not always guarantee serviceability, since the contact may be broken.
- π₯ Red color - 10 A (lights, sensors, alarm).
- π¨ Yellow color - 20 A (window lifters, fans).
- π¦ Blue color - 15 A (cigarette lighter, radio, pumps).
- Cigarette lighter
- Window lifters
- Headlights
- Audio system
Instructions for self-replacement
The process of replacing a blown fuse with Nissan Terrano 2018 is extremely simple and does not require any special tools. As a rule, the car comes with a special plastic clamp (tweezers) that is attached to the fuse box cover. If it is missing, you can use thin tweezers or soldering irons.
It is important to follow the sequence of actions. First you need to determine which element burned out using the diagram on the lid. Then carefully remove it and check the integrity of the metal thread inside the transparent case. If the thread is broken, the element must be replaced.
When installing a new fuse, make sure it fits tightly into the socket. A squelching contact can lead to heating and re-burnout. Never try to replace a fuse with a piece of wire or a paper clip - this is a gross violation of operating instructions.
βοΈ Replacement procedure
In some cases, the problem may not be with the fuse itself, but with the contacts inside the socket. Oxidation or unbending of the contacts can lead to a lack of contact even with a working element. In this case, thorough cleaning of the contacts or repair of the connector is required.
β οΈ Attention: Always use a fuse of exactly the same rating that was installed previously. Installing an element with too high a current may cause a fire in the wiring due to a short circuit.
After replacement, be sure to check the operation of the unit. If the fuse blows immediately after installation, there is a serious short circuit in the circuit. In such a situation, further independent actions are not recommended, and a visit to a specialized service is required to search for a short circuit.
Store old fuses in a separate container. You may need them as a backup in the field if you run out of new items.
Common problems and causes of burnout
If the fuses are on Nissan Terrano 2018 models burn out regularly, this is a sure sign of a malfunction in the electrical circuit. The most common reason is connecting powerful external devices, such as car refrigerators or audio amplifiers, without following the connection rules.
A short circuit in the wiring is also a common cause. Wire insulation can be damaged due to vibration, friction against the body, or exposure to aggressive chemicals (anti-icing agents). This is especially true for the engine compartment, where temperatures and loads are maximum.
Often the problem lies with the consumer himself. For example, a faulty power window motor can draw more current than the fuse is rated for, causing it to blow. In such cases, replacing the element does not solve the problem, and the mechanism itself must be repaired.
- π Overload from connected additional electrical appliances.
- β‘ Short circuit due to damaged wire insulation.
- π§ Malfunction of the electric motor itself or the consumer.