Fuses, relays, their location and purpose

Renault Logan 1

The first generation was produced in 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 and 2013 with
1.4 and 1.6 and 1.5 liter diesel engines. Also known as Dacia Logan 1 . In this publication you will find a description of fuses and relays for Renault Logan 1 with block diagrams and their locations. Note the cigarette lighter fuse.

The number of fuses and relays in the blocks, as well as their purpose, may differ from those presented and depend on the year of manufacture and level of equipment of your Renault Logan 1.

Block under the hood

In the engine compartment of the 1st generation Renault Logan, there are two different options for the arrangement of elements. In both of them, the main units are on the left side, next to the battery.

Option 1

Photo - diagram

Designations

Fuses in the interior of Logan 2

The interior fuse box is located at the end of the panel under the cover, on the left side; on the cover there is a description of the fuses, spare fuses and a tweezers puller (clothespin)

• The cigarette lighter fuse is highlighted in orange in the table

Renault Logan Loganenish Logbook Cigarette lighter burned out

Nexia fuses Quite recently I had some trouble. The radio stopped working, and so did the cigarette lighter. On the Logan there is one fuse for the cigarette lighter and the radio, I went and looked at the burnt fuse, changed it, decided to turn on the radio, but it still doesn’t work. The cigarette lighter doesn't turn on either. I went to the fuses again and it turned out that the fuse I had just inserted had burned out again. Look at the cigarette lighter and it has melted on one side inside.

Melted cigarette lighter

Without thinking twice, it was decided to remove the cigarette lighter (pull out the block from it) so that nothing would short-circuit.

But here the first set-up awaited, as you know, on Logan a lot of things are twisted on torexes, and I didn’t have such keys. Thanks to my colleague. who drives an Opel Astra of previous generations, it turns out that everything is also on Torex and he helped me out with the keys. First, he unscrewed two bolts under the cup holders in the front.

Then one bolt at the feet of the rear passengers under the plastic latch.

After that, I pulled out the lower part of the floor tunnel and pulled it through the handbrake and removed it.

Floor tunnel without bottom

Stand number two was waiting here; to remove the upper part, you had to unscrew the nut securing the upper part to the floor. It was impossible to get to it with any socket wrench, and I didn’t have a wrench with heads. I had to go back to the mercy of my colleague in the Opel. And armed with a twelve-point head and a wrench, the vile nut was defeated

Nasty nut

After this, the upper part was safely removed, the cigarette lighter can be turned off.

Cigarette lighter socket Under the removed top of the floor tunnel, a Dacia computer manufactured by Bosch was discovered. Here it turns out to be where it is located.

We're nowhere without Bosch. After that, the cigarette lighter socket was removed and everything was put back in place. The fuse was replaced (instead of 10 I put 15 on the forum, Logan swears that nothing bad will happen from this and I am inclined to believe them), the radio started working safely.

Now I’ll worry about buying a new cigarette lighter for the car, but having already called all the stores selling Logan spare parts, I discovered that no one has such a simple thing.

About the features of the system design

The design of the fuel supply system to the Renault Logan engine implies the presence of several components through which the fuel-air mixture under pressure enters the combustion chambers of the cylinders. The main elements of this system are:

• gas tank;
• main fuel line;
• fuel rail;
• return line;
• nozzles;
• pressure regulator;
• fuel gasoline pump;
• level sensor and filter.

Sometimes the fuel pump needs to be replaced. The functioning of the system under consideration is subordinated to an on-board computer, which, in real time, based on signals from various sensors, adjusts the operation in order to ensure that the mixture is supplied to the combustion chambers with an optimal ratio of fuel and air.

Fuel pump diagnostics

In order not to make a mistake when buying a new part, you should be sure that it is the fuel pump that is not working. To do this, you will have to carry out a number of diagnostic operations. So let's get started:

1. The first diagnostic operation will be to simply turn on the ignition switch. If you turn the key to position No. 2, the fuel pump will create a certain sound that will be heard. If he didn’t appear, then that’s definitely the reason.
2. The next step is to examine fuses and relays.
   Examine the fuse (F02 (5 A)), which is responsible for the operation of the fuel pump, and determine its functionality. Change if necessary. Location of fuses in the main unit
3. Now you should diagnose the relay. To do this, you need to turn the ignition key several times, if it clicks, then everything is fine. It will not be possible to check the relay using diagnostic programs that work through the connector.
4. If all of the above elements are intact, then the fuel pump is “dead” and must be replaced.

Key-dop

1. When the ignition key is turned to the 2nd position, the fuel pump relay is turned on, which operates for several seconds, providing the required pressure in the fuel rail. The engine can then be started. This is the normal operating mode of the system.
2. When the Renault Logan engine starts, the relay is activated again, ensuring that the pump operates continuously throughout the entire engine operation. Thanks to this, fuel is supplied to the ramp continuously through the fuel pump. In it, the regulator ensures that constant fuel pressure is maintained, eliminating the formation of excess (it returns to the tank via the return line).
3. If interruptions occur in the operation of the motor, the first diagnostic measure will be to check the integrity of the pump fuse and relay. And if a breakdown is detected, the fuel pump needs to be replaced.

How to replace inserts

In cases with a cabin unit and a power supply located in the engine compartment, replacing fuse links does not present any problems at all, unlike the Megan 2 and 3 models. To correctly identify the faulty component of the unit, you should use the Renault SANDERO fuse location diagram.

Renault Sandero often suffers from a malfunction of the cigarette lighter, namely insert number 33. This circuit is powered by 10A, through which current is supplied to the car’s audio system.

If a blown fuse is found, there is no need to rush to replace it with a new part and consider the repair complete. You should understand the cause of this malfunction so as not to step on the same rake later.

After the lid is opened, the inserts are revealed to our eyes, which are removed from their seats by simply rocking them to the sides.

New parts are put into place and the block cover is secured with a latch.

Some tips when working on car electrical circuits

• If it is necessary to remove a burnt-out insert, do not use metal screwdrivers or other objects. Try to avoid them, otherwise a short circuit may occur in the electrical circuit;
• It is not recommended to disconnect the battery terminals while the engine is running and not turned off. If you don't do this, you may pay the price with your voltage regulator and other electronic equipment;
• if there is a need to carry out electric welding work on the car body, then the connecting terminals of the battery and the generator set must be disconnected, and the engine ECU must also be disconnected;
• when the engine is running, you need to be very careful not to accidentally touch the elements of the ignition system and high-voltage wires;
• Another rule that must be followed: it is necessary to periodically inspect the battery terminals and connecting terminals of the wiring for contamination and oxides. If any are found, immediate cleaning should be carried out;
• Before performing any operations on electrical equipment, you should carefully study the circuit diagram to which it is connected to understand how it works.

Violation of the integrity of some fuse links cannot be determined visually. To find out exactly where the short circuit occurred, use a test lamp. How it works? The suspected burnt fuse is removed from the circuit. A lamp is connected in its place. If it starts flashing, there is a short in the main wiring harness. Perhaps the insulation has broken through some of the wires.

Using this test lamp, you can check the electrical circuit for an open circuit. In this case, an additional power source is needed. The contact wires of the lamp are connected to the connecting ends of the circuit. If a glow is observed, it means that current is passing through it. Otherwise, you need to look for the break point.

Brake light faults

View of the additional brake light from inside the car

If you decide to start or continue driving a car when the brake lights are faulty, this means exposing not only yourself, but also all other road users to danger. Therefore, lamps should be periodically monitored and maintained.

Among the problems, the most common cases are:

1. During braking, the brake light does not work on one side.
2. When braking, the brake lights on both sides do not work.
3. Additional signal light does not work

Diagnostic and repair methods

Since the functioning and performance of these outdoor lighting elements directly depends on the performance of the vehicle’s electrical network, it is necessary to pay close attention to its condition. If all the brake lights on your car stop working at once, the reason for this is most often the failure of fuse F3 (for the passage of current with a force of no more than 20A) located in the Renault Logan interior fuse box

If all the brake lights on your car stop working at once, the reason for this is most often the failure of fuse F3 (for the passage of a current with a force of no more than 20A) located in the fuse box of the Renault Logan interior.

The location of the fuse we need is marked with a red marker.

This element is part of the direct power supply circuit to the brake lights. You can check the serviceability of the circuit using a known good fuse or using a tester (multimeter). If such manipulations do not bring the desired result, and the lights still do not work, then the search for the fault must be continued. The next step in the repair will be to check the wiring for evidence of breakage or chafing of the wire in the circuit.

Next, an element that can also cause a malfunction is the brake lamp switch on Renault Logan, which is installed on the bracket with the pedals. For more effective diagnostics, it is best to remove it from its seat. This work is carried out in the following order:

1. Since the circuit of this sensor is constantly energized, you should disconnect the negative terminal from the battery.
2. Next, remove the connector with wires.
3. In order to pull it out from its place of fixation, you need to turn the sensor body 90 degrees and slowly pull it towards you until it is completely dismantled.

To check the sensor, you can use a tester and measure its resistance, or connect a known-good sensor. Checking the device with a tester is very easy; we connect the tester wires to the sensor connectors, and use our hands to operate on the protruding rod. A working device will thus show its functionality, but a broken one must be replaced.

The next step is to check that the mains voltage is reaching the working sensor. We connect the battery back to the network and use the equipment to check the voltage in the sensor terminals. If the result is positive, we put everything back together in reverse order and proceed to direct diagnosis and replacement of the brake light bulbs.

Prevention options

In order not to constantly purchase a large number of fuses, you need to apply preventive measures.

1. The most common way to avoid frequent failure of fuses is to replace them with a more powerful element. Experts recommend installing the device at at least 15 amperes. In this case, the likelihood of problems occurring and fuses blowing is reduced significantly.
2. Secondly, you need to carefully select devices, since the electrical power is indicated on the packaging of DVRs, car radios and other products used in cars. To avoid blowing fuses, you need to carefully read their technical characteristics and only then connect them to the car’s electrical network.
3. The third condition is that it is recommended to connect the plug correctly. Since due to a mismatch between the standards of the plug and socket of the device, certain problems may arise. The plug is connected correctly if the contacts are in a horizontal position, i.e. on the sides (not below and not above!). This arrangement will avoid burnout and melting of the terminals.

But if a problem does arise and the element burns out, then it will have to be replaced with a new one. This procedure is extremely simple; in Renault Logan you can get it out by prying it off with a thin flat-head screwdriver.

Preventive actions

If you don't want to constantly stock up on tons of fuse sets, you should implement a strategy to counteract their frequent failures.

1. The first and most common method is to use fuses on an analogue with a higher power. Experts recommend using devices with a power of 15A. The likelihood of burnout is minimized, and damage to the on-board network does not occur.
2. The second measure will be the correct selection of the device. The packaging containers of the most diverse products indicate their power consumption. It’s great if they have their own element. To prevent burnout, carefully read the characteristics of the device you intend to purchase. This is a simpler action compared to “uprooting” the fuse from its socket.
3. Thirdly, the plug must be connected correctly. Due to its inconsistency with the design features of the nest, the above problems arise.

To ensure correct connection, the location of the contacts must be horizontal, but not vertical (that is, on the sides, but not at the top and bottom). This action will prevent melting of the terminals in the Renault Logan car.

If a malfunction does occur and the fuses become unusable, then the only solution is replacement. The procedure is quite simple. In order to remove the fuses from the mounting socket, it will be enough to pry them with a flat-profile screwdriver.