Where is the fuel pump fuse for VAZ 2114 injector 8 valves?

In this article, today we will look at the process of troubleshooting a VAZ-2114. Initially, the car did not start.

Let's get started:

I couldn't hear the fuel pump running, so I decided to check the voltage on it.
I found out that there is no voltage at the fuel pump. The next step I checked was the fuel pump relay. It turned out to be serviceable, but I heard some strange clicking sound from the upper relay. On a VAZ-2114, the top relay is the main relay, which switches not only the fuel pump, but also other systems, such as the fan relay, speed sensor, oxygen sensor and others.

Replaced the relay with a known good one. To check, I took the relay from the mounting block, in the engine compartment. After turning on the ignition, the click of the main relay turned on indicated that it was working properly and the car started up.

At this point, the inspection of the VAZ -2114 can be considered closed. Replaced the main relay and the car started.

When working with the car’s electrical wiring, do not forget to disconnect the negative terminal of the battery so as not to burn something working.

VAZ 2114 2115 2113 fuses and relays

Lada Samara is a general designation for the VAZ 2113 2114 2115 . They were produced with a sedan body, as well as 3 and 5 door hatchbacks, mainly with 8 and 16 valve gasoline engines. Years of production: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 and 2013. During this time, some models were updated. In this publication we will show a description of VAZ 2115 2114 2113 fuses with block diagrams, their locations and photographs of the design. Note the cigarette lighter fuse.

The design of the blocks and the purpose of the fuses in your VAZ 2114 2115 2113 may differ from the one presented and depends on the year of manufacture and level of equipment.

We study the signs of a fuel pump failure if it does not pump fuel

The non-pump is one of the key components of the VAZ 2114 fuel module. The gasoline pump helps ensure that gasoline is supplied to the engine at the required level of pressure.

Fuel pump for VAZ 2114

Any guarantees from the manufacturer with the actual service life of the fuel pump have little in common, since its durability directly depends on the operating conditions - even the highest quality VAZ fuel pump can quickly fail due to bad gasoline.

Main unit

The main fuse and relay box is located in the rear part of the engine compartment, in the installation department, under a protective cover.

The current diagram for your vehicle can be printed on the back of the protective cover. Check your appointment!

Option 1

Scheme: 2114/ 2115 — 3722010, -3722020, -3722010-30, -3722010-38, -3722010-40, -3722010-48, -3722010-60, -3722010-68

Description of fuses

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How to change the pump

If it turns out that the relay for the VAZ 2114 fuel pump, the motor, the ground contact, and all other electrical elements of the circuit are working, all that remains is to replace the damaged pump with a new one.

You can do it like this:

1. Disconnect the battery ground terminal.
2. Drain the fuel from the tank.
3. Remove the rear passenger seats.
4. Remove the plastic cover covering the pump.
5. Disconnect the wires and hoses going to the pump.
6. Unscrew the fuel pump fasteners using a size 7 wrench.
7. Remove the pump from the tank.

Installing a new fuel pump is done in exactly the same order, but in reverse order.

Additional block

It is located at the bottom right of the center console, behind the protective cover.

Photo - diagram

Decoding the scheme

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1. Main relay (engine control unit)
2. Cooling fan
3. Fuel pump

• F1 - 15A Main relay (engine control unit, ignition module)
• F2 - 15A Constant power supply to the controller, relay for turning on the electric fan (winding), canister purge valve, air flow sensor, speed sensor, oxygen sensor (heating)
• F3 - 15A Fuel pump, fuel pump relay (contacts), injectors

Individual fuses and relays may be located outside the main units.

That's all. And if you have anything to add to the material, then write in the comments.

Source

CHECKING WIRING CONTACTS

If the fuel pump does not work, do not rush to change it - perhaps the problem is in poor-quality wiring. There are 3 wires connected to the pump: to the gasoline level sensor, and positive and negative to power the motor.

No special tools are required to check the wiring - a regular 12-volt light bulb is enough. We connect the light bulb to the negative and positive wires of the pump, and turn on the car’s ignition - if the light blinks, then everything is fine with the wiring.

Fuel pump fuse and its functions

The fuel pump safety device, not only on the VAZ-2114, but also on other passenger cars, is just a small element in the vehicle’s fuel system. It has a relatively small size, but carries an important functional load.

The main function of this element to protect the functions of the fuel pump is to open the conductive circuit of the automobile fuel system. This need arises in case of overload of electrical circuits. As soon as such an overload occurs, the fuse element melts as a result of the high temperature, and the electrical circuit becomes open.

The safety element is small in size, and its design is quite simple:

• the outer casing is made of plexiglass;
• inside the device there is a conductive element made of plates and fusible material;
• the body is marked in the form of the Latin letter “F” (this designation indicates that the safety device is intended for an electrical circuit with low power).

Thanks to the metal plates and the fusible material between them, the fuel pump fuse perfectly conducts electric current, but at a power that corresponds to the markings on the body of this part. If the power indicators in the electrical circuit are higher than the required value, the low-melting material immediately begins to melt, and the current-carrying circuit opens.

Thus, the fuel pump is saved from possible overloads.

Symptoms of a problem

• The first sign indicating a breakdown of the fuel pump will be a banal refusal of the engine to start. Of course, such an indicator as an unstarted car is very general. In this case, it is worth checking the spark plugs, which may become oily and not produce a spark and the ECU.
• The second point is the pressure of the fuel system. If the fuel pump is OK, it creates a pressure of 3.2 bar. The fuel rail is characterized by the following indicators:

1. for a volume of 1.5 l – from 285 to 325 kPa,
2. for a volume of 1.6 l - from 375 to 390 kPa.

• A very common problem is when the signal does not reach the fuel pump after ignition. When you turn the key, you usually hear a slight vibration from the fuel pump, but here it doesn’t happen. Most likely the wiring has failed. We'll have to call her and figure out what's what.
• The engine is tripping. Like reason number one, this indicator is not a benchmark. It is believed that the signs of a malfunction of the VAZ 2114 fuel pump are represented by other obvious causes of malfunctions. However, if the fuel pump is not working properly, the engine begins to jerk (which is natural, fuel combustion in the cylinders occurs incorrectly), and operate intermittently out of the blue.
• The engine may jerk even before starting or at low speeds. This reason is closer to the truth: either the fuel pump or its mesh – a low-purity filter – is not working.

The fuel module, which includes the pump itself, is expensive - from 2,000 to 3,000 rubles. The inept owners of the fourteenth buy it entirely (together with the filter, fuel level sensor, float and intake chamber) and install it to replace the deceased. In fact, the price of a VAZ 2114 fuel pump is only 700-1000 rubles, you only need to take and install it, the rest of the module almost always remains intact.

Just don’t immediately run to the spare parts store and buy a new one! There are plenty of reasons for the breakdown, including those that may lie in the power system. Here are the main ones:

• Fuel pump fuse VAZ 2114
• Fuel pump relay VAZ 2114
• Poorly secured mass of the VAZ 2114 fuel pump
• Fuel pump motor VAZ 2114
• Contacts of the fuel pump system VAZ 2114
• The fuel pump itself

Where is the fuel pump fuse on the VAZ-2114

In modern passenger cars, the manufacturer installs several special safety blocks in the current-carrying circuit at once in case of unforeseen situations that could damage the vehicle. This is done to reduce the risk of fire. Such fuses localize the entire electrical circuit to key areas where short circuits are most likely. Any vehicle has instructions that contain detailed diagrams of the location of all parts.

The VAZ-2114 also has a fuel pump safety device located under the hood. More precise location of this part:

• open the hood;
• look towards the windshield;
• there is a plastic box on the ECU;
• This box contains the fuse we need.

On the VAZ-2114 the fuse is marked as follows - Fuel Pump 15A.

Pressure system

The gasoline pump creates pressure in the fuel rail for normal gasoline supply functionality. Let's measure the pressure and we'll understand a lot right away.

Normal parameters of atmospheres in the system are as follows:

• Idle – 2.5
• Ignition – from 3
• Without pressure regulator tube – 3.3
• With pinched drain – 7
• We press on the gas - from 3 to 2.5.

We will measure in these five states with a pressure gauge with a small range of atmospheres (up to 7, to reduce the error to a minimum). Under the hood we found a pressure fitting (just unscrew the cap in advance), attached a pressure gauge (hose) to the fitting and off we went. The ignition is turned on, the pressure gauge is zero: the fuel pressure regulator is broken. We press on the gas, the pressure gauge goes to zero: the fuel pump itself is broken (now you can do some shopping at a spare parts store). There may still be a situation. When the pressure gauge needle lazily rises, look at the condition of the fuel filter.

By the way, if you don’t have a pressure gauge, it’s sad and sad, because it’s an expensive pleasure. Similar diagnostics in the service will cost half as much.

Common mistakes

You can use our instructions in one case: when the fuel pump , but other systems are working properly. Sometimes the engine does not start for several reasons at once. And then you need to reduce the pressure like this: wait 5-6 hours, and do not turn on the ignition. Be careful!

Actually, the ramp is under pressure

You can find out about the presence of pressure in the standard way:

• Open the hood;
• There is a fitting on the fuel rail, closed with a plastic cap. They turn him away;
• The nipple cap can be used to unscrew the fitting plug. This action is performed carefully: the residual pressure has not disappeared anywhere.

Even if gasoline starts to gush out, do not try to tighten the fitting right away. Let the pressure drop a little.

Diagnostic connection and plug

Trying to fix a fuel pump is commendable. It will be possible to change its mesh. But the cause of the problem may also be a clogged fine filter.

The replacement filter (“can” 2112-1117010) gradually fails. On all fuel-injected cars, including the VAZ-2112, the fuel pump will not stop working even if the filter is completely clogged. Fuel is not pumped, but the engine does not burn out.

Fuel pump relay? Diagnostics VAZ 2114

Useful video

Additional information on this issue can be gleaned from the video below:

A frequent and unpleasant question: why does the fuel pump fuse blow out? Many, faced with this problem, begin to chaotically look for new fuses and insert the first one they come across. In such a situation, it is not always possible to find exactly the right fuse.

Having installed a new element, the car drives a couple of tens of meters and stops again. At the same time, during these meters traveled, the car manages to shake and shake quite a bit.

The very name “fuse” indicates that this small element protects a more expensive device from failure. If a fuse blows, the problem may lie in something more serious. Therefore, it is not advisable to insert another element instead of the desired one. The fuse consists of thin plates made of a certain material and they are of a fixed thickness.

A fusible element is soldered between the set of plates, which opens the circuit when overloaded. This entire structure is enclosed in a polymer mandrel.

Tips for motorists

The electric fuel pump on a VAZ-2114 passenger car is located in the fuel tank, and after the ignition is turned on, voltage is supplied to its terminals through a 15 amp fuse F3 and relay R2, located under the panel on the passenger side in the car interior.

The first thing the driver of the “fourteenth” does after the fuel pump fails is to unscrew the two screws that secure the cover on the right side of the console under the panel, covering three relays and three fuses, and check the integrity of fuse F3, which is located next to two relays located one behind the other and the state of the contacts where the fuse is inserted. If it is intact, you need to check the fuel pump relay (you can replace it), which is located next to the fuse (it is the middle one among the relays available there).

If everything is in order with the fuse and relay, then the driver’s next action will be to get to the fuel pump terminals. To do this, you will have to lift the rear seat cushion and remove the cover at the bottom of the car body by unscrewing the screws that secure it. In the opened hatch you will see three terminals, one of them is negative, and two are positive (gray and black wires), which supply voltage to the fuel pump and fuel level indicator. You have to check whether voltage is supplied to the positive terminal of the fuel pump motor. This can be done using a control lamp. When you turn on the ignition, it should light up for 3-5 seconds (this is the time it takes to pump gasoline from the tank into the fuel rail before turning on the starter).

If the light comes on and the fuel pump does not work, this means that voltage is supplied and you need to check its value using a tester, since if the voltage is below 10 volts, the electric motor of the fuel pump will not start. The voltage drop occurs due to oxidation of the contacts, so you will have to check the condition of the contacts of both the negative and positive wires. You can also check the serviceability of the fuel pump by applying voltage to its terminals directly from the battery using two long wires. If the above actions do not help, then the fuel pump will have to be removed from the fuel tank and either replaced with a new one, or disassembled and looked for a fault inside it (for example, the brushes are stuck or worn out).

In addition to the above reasons, a working fuel pump may stop working as a result of a malfunction associated with the installed security alarm, which blocks the operation of the fuel pump when the engine starts.