Fuses and Relays Used in Nexia – Diagram, Photo

In all cars, even the oldest ones, all electrical circuits are protected by fuses, and the 2nd generation Daewoo Nexia N150, produced in 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016, is no exception. From the factory, each fuse has its own rating, and in no case should you install a fuse of a higher rating. If you put less, then it simply won’t withstand the load and will burn out, but if you put a higher rating, it may not withstand the wires, since, for example, their cross-section is rated for 10 Amps, and the fuse is rated for 10 Amps, but you set 30 Amps . In this case, the fuse will hold, but the wiring will not. The wires will begin to melt and the wires next to them will be affected.

Fuse location

For those who urgently need to see the location of the fuses, here is a table.

How to replace it yourself?

Below we will tell you how to remove and change safety devices and the unit itself.

Replacing fuses

You can remove and change parts like this:

1. Turn off the ignition in the car and open the hood. The negative cable must be disconnected from the battery terminal.
2. Get inside the car and find the mounting block, remove the plastic protective cover.
3. Find the part that needs to be removed and replaced. If the problem lies in the performance of the fan or heating system, then it is not a fact that the reason lies precisely in the fuses. But these details must be checked first. Find the fuse according to the diagram and evaluate its condition. If the element burns out, the fusible thread located inside the part will be damaged. Usually it breaks or burns out. If you notice a defect on the plastic body of the device, it has melted, then this can indicate not only the failure of the part, but also problems in the electrical network. Fuses usually blow due to a short circuit. If this happens, you need to determine the cause of the voltage surges by testing all sections of the circuit or contact a professional electrician. In some cases, a visual inspection does not reveal a failed fuse. A part may look intact, but in fact it is inoperable. When you find a failed fuse, you must remove it using tweezers located inside the block.
4. Instead of the blown part, install a new fuse that will correspond to the failed one. We are talking about the numbers indicated on the body of the elements. After installing a new fuse, check the operation of the electrical equipment.
5. To remove the relay, proceed in the same way. Identify the failed part, then dismantle it by hand, pulling it towards you. The relay must be removed carefully so as not to damage the socket itself. To diagnose the performance of a part, we recommend installing a known working element instead of a failed one.
6. When the replacement steps are completed, replace the plastic cover and connect the negative terminal of the battery.

Photo gallery

Photos of the fuse replacement process are shown below.

1. Remove the protective cover from the block

2. Find the failed part

3. Remove the fuse and change it

Replacing the block

There is nothing complicated about replacing the mounting block:

1. Turn off the ignition and disconnect the terminals from the car battery.
2. Remove the cover from the block and remove each safety element and relay in turn. Before removing, we recommend taking a photo of the device so that later you can quickly install all the parts in place.
3. There are locks on both sides of the block on the side of the safety elements. They need to be pryed off with a screwdriver.
4. Pull the device towards you and disconnect the connector with wires from it. Please note that Nexias of different years of manufacture may use the same blocks, but the plugs for connecting the wires on them will be different. Please consider this nuance when purchasing.
5. Connect the connector with wires to the block and install it in place.
6. Place all fuses in their sockets and reconnect the battery terminals. Check the functionality of the equipment.

Fuse box in Nexia

Fuses on Nexia are responsible for the safety of electrical appliances. When a short circuit occurs, the fuse burns out first, thereby protecting the electrical appliance. The fuse box diagram for Nexia 8kl and 16kl are identical and for Nexia n100 and n150 the blocks are also interchangeable. Every self-respecting motorist should have such a diagram at hand. Also, replacing fuses should be done with the engine turned off. The Nexia has a double fuse box; the main fuses and relays are located on the outer visible side, and the remaining relays are located on the reverse side.

To differentiate between each other, fuses come in several colors. Each color has an amp rating.

Red – 10 Amps Blue – 15 Amps Yellow – 20 Amps Green – 30 Amps

Why does the ignition switch contact group get hot?

First you need to remove the contact group. You can see the numbers on the contact group (see photo):

As you can see, there are only 5 contacts per kg of the ignition switch:

“30” – powered by battery

“15” – ignition

“15a” – stove fan

“50” – starter

“Kb” (“Ka”) – radio tape recorder

R - rare on rare 6-pin kg

By turning the key we close the following contacts:

Initial key position “I”: closed “30”+”R”

Initial position of the key “I” + the key is recessed into the ignition switch: “30”+”R”+”Ka” closes

Position “II”: “30”+”Ka” are closed

Position “III” is closed “30”+”Ka”+”15a”+”15″

Starter position: closed “30”+”50″+”15″+”Ka

Why is the contact group burning out so quickly? I hope no more questions arise. All consumers of the car pass through this thing (see photo below), this is the whole problem, to solve it you need to unload the currents using a relay.

The main sources of consumption arise when contacts 30 and 15 are closed, so they need to be unloaded from this current. Installing an unloading relay would be the right option, so you can forget about the problem of burnout of the contact group on the Nexia.

Fuses used in Nexia

Location and purpose of fuses
(Click on the fuse you are interested in and find out what it does)

Find out which fuse is responsible for what below.

• Fuse F1 Electronic engine control unit (ECU) - 10A

This fuse is responsible for powering the brain; if you remove this fuse, the car will not start.

• Fuse F2 Tail lights and license plate light—10A

If your license plate lights and side lights do not work, check this fuse.

• Fuse F3 The fuse was a waste of time, but in some models. — 15A

Also a fuse for the brain, but in most cars there is an empty space here.

• Fuse F4 High beam - 20A

The fuse is responsible for the operation of both high beam bulbs at once, so if the high beam does not light, then check this fuse. If neither the right nor the left high beam headlight lights up, then the reason is most likely in the fuse; if it doesn’t light up on one side, then the light bulb has burned out.

• Fuse F5 Low beam on the left side and left electric headlight adjustment - 10A

Low beam light with electric beam direction corrector, if your corrector does not work and the low beam does not shine, then check the fuse

• Fuse F6 Low beam on the right side, right headlight range control - 10A

Same as f5, but on the right side of the car

• Fuse F7 Fuel pump (fuel pump in the gas tank) - 30A

The fuel pump has a 30 Amp fuse; it is not recommended to install a larger one.

• Fuse F8 Hazard warning light, side turn lamps (turn signals) - 20A

The hazard light may short out the light, if this fuse is overheated, then check the hazard light or turn signals

• Fuse F9 Windshield wipers - 30A

If the windshield wiper doesn't work, it's not a fact that it's a fuse, but it's worth checking

• Fuse F10 Fuel filler neck (fuel door lock actuator) - 10A

In winter, a common problem is that the hatch does not open; if you press the button too much, most likely the electric motor will fail, but before that, check the fuse

• Fuse F11 air conditioning compressor (relay) - 10A

According to the pinout of the fuse diagram on the Nexia, there is a fuse for the air conditioner; if there is no air conditioner, there is no fuse.

• Fuse F12 Radiator cooling fan (low speed) - 30A

An important fuse, always check it to avoid problems with engine cooling.

• Fuse F13 Instrument panel, cigarette lighter, horn, glove box light - 20A

If this pre knocks you out, it means there is a short circuit somewhere. As soon as this fuse burns out, you will immediately understand that the instrument panel will go out and the cigarette lighter will stop working.

• Fuse F14 Nexia cooling fan (maximum speed) - 30A

Always keep the fuse intact so that lack of cooling does not damage the engine.

• Fuse F15 Interior light bulbs, radio antenna - 20A

If the light in the cabin does not light, then the fuse or light bulb is to blame. Check the fuse first

• Fuse F16 Power windows - 30A

If not a single window regulator works, then the front one is burnt out. They usually burn out in winter.

• Fuse F17 Radio - 10A

If the radio doesn't work, look at it

• Fuse F18 Trunk lock drive, central locking, battery-powered radio - 30A

The trunk does not respond to the opening button, and the central locking and radio are silent? It's a blown fuse.

RELAY 1 turn signal

Blower Motor RELAY 2

RELAY 3 fuel pump

If you want to learn more about the fuel pump relay, I recommend reading our article.

RELAY 4 fog lights

The main symptoms of a malfunction of the ignition switch contact group

The main signs by which you can understand that the contact group is burnt out and does not work or will soon break. You can touch it, the contact group gets very hot, turning on the low beam, heater, windshield wipers, radio - at this moment there is a colossal load on the contact group, the contacts get very hot and the plastic begins to melt. The contact group will work for some time, but due to the fact that the plastic has melted, the contact has become even worse - a breakdown is not far off.

So the first sign is strong heating of the contact group. The second and main sign is the smell of burnt wires or plastic. If you remove the steering column casing, you will smell a burning smell and see a picture - blackened, burnt wires and a corrected contact group. Consider this article your salvation, you just need to read it to the end.

There is also a situation when you turn the key, but the car does not react. Nexia has a standard problem. This means 99 percent that your contact group has received a hitch. But don’t despair, if you don’t have a contact group at hand, you can drive normally by starting the engine with wires (see How to start a Nexia engine with wires without keys). If when you turn the key, the car does not start, then the contact group is to blame. It also happens that the starter simply does not turn when you turn the key - this is the same trouble.

Control relays for Daewoo Nexia electrical system

Activation of automotive equipment with a high load current (starter, radiator fan, generator) is performed through electromagnetic relays. In Daewoo Nexia, the main control relays are also located in the mounting block: