Audi 80 b4 fuse decoding. Driving with a faulty alternator

Fuse box in the engine compartment.

The unit is located in the rear left side of the engine compartment.

Decryption:

1. diagnostic connector
2. fuses 1-21. For vehicles with diesel engines, fuse 22.
3. additional fuses 23-32
4. four spare fuses
5. relay designation on the cover of the distribution panel
6. clip for removing and installing fuses

The layout of the fuses and relays in the block.

Decryption:

№	Purpose	Ampere
1	Fog lights, rear fog lights	15
2	Alarm	15
3	Sound signal, seat heating	30
4	Electronic clock, trunk light, interior light, vanity mirror, reading light, cigarette lighter, on-board computer, automatic air conditioner, radio, self-diagnosis system	15
5	2nd radiator fan speed	30
6	Rear right marker and parking lights	5
7	Rear left marker and parking lights	5
8	Right headlight high beam, high beam warning light	10
9	Left headlight high beam	10
10	Right low beam headlight, right headlight adjustment motor	10
11	Left low beam headlight, left headlight adjustment motor	10
12	Instrument panel, lights reversing, control system, automatic transmission, differential lock, board computer, adjustment speed limit, retarder relay for interior lighting with, electronic thermal switch, relay for turning on the fan radiator airflow	15
13	Fuel pump	15
14	License plate light, instrument panel light, engine compartment light, glove box light, automatic air conditioning	5
15	Direction indicators, windshield wiper, washer pump, heated windshield washer jets, radiator fan relay, air conditioning	25
16	Heating rear window, heated mirrors	30
17	Cabin blower, automatic air conditioning	30
18	electric mirrors	5
18	Rear window cleaner (Avant)	15
19	Central locking, lock switch cylinder heating, anti-theft system	10
20	Radiator fan, 1st speed, interior fan	30
21	Diagnostic connector	10
22	Not used (vehicles with petrol engines)
22	Glow Plugs (Diesel Vehicles)	80

Additional fuses, bottom row:

23	Not used	-
24	Not used	-
25	Heating lambda probe. Not available for diesel vehicles	5
26	trailer connector	30
27	Ignition/fuel injection system	10
28	Ignition/fuel injection system. Not available for diesel vehicles	10
29	Stop signal	10
30	Speed ​​control (vehicles with automatic transmission) It is not used in vehicles with diesel engines.	5
31	ABS, differential lock	15
32	Ignition/fuel injection system Vehicles with TD diesel engines - fuel cut-off valve	10

Relay decoding:

1 - relay for fog lights and tail lights. For vehicles without fog lamps, there is a jumper in this place.

2 - radiator blower fan relay (for vehicles without air conditioning), radiator blower fan relay to turn on the 2nd stage of rotation

3 - fan relay

4 - headlight washer relay

5 - X-contact unloading relay

6 - interior blower fan relay (manually controlled air conditioner), air conditioner fan relay for speed at the 2nd stage (automatic air conditioner)

7 - horn relay

8 - horn relay anti-theft system(vehicles with mechanical box gears). Cars without such a system have a jumper. For vehicles with automatic transmission gear this place is free.

9 - intermittent wiper relay

10 - fuel pump relay

11 - radiator fan relay for turning on the 1st stage of rotation

*Attention! For vehicles with diesel engines, pos. 2 and 3 are unoccupied and relay 10 is the glow plug relay

Additional block relay in Audi showroom 80 b4.

To access the unit, unscrew 4 screws and remove the cover.

The layout of the relay in the block.

On different modification x cars, not all relays are installed.

Decryption:

1. ABS system
2. Seat Belt Warning Light
3. Interior lighting control unit
4. A/C Clutch Relay Box
5. Rear window wiper and washer
6. Oil pressure monitor, front lighting control unit
7. Not used
8. Not used
9. Automatic shift lock (only for vehicles with automatic transmission)
10. Not used
11. Not used
12. Heated passenger seats
13. Heated driver's seat
14. Car sunroof relay
15. Electric sunroof and door glass control unit
16. Relay signal lamps anti-theft alarm
17. Power door windows, power sunroof, power seat circuit breaker

Relay assignment for diesel engines.

Decryption:

5 - electric current relay

12 - acoustic signal relay (door not closed, not fastened belt)

13.14 - EGR control relay

15 - lighting lamp control relay

18 - relay of the 3rd speed of rotation of the radiator fans (usually it is the 2nd speed)

K - radiator fan fuse

S - current fuse

In this section, we will consider the purpose of the fuses on the Audi 80 (B3) 1990-1992. release. Audi 80 debuted in 1972 and soon won the prestigious title of "Car of the Year". With modifications, the Audi 80 has been produced for more than 20 years, and is still considered one of the most reliable and prestigious cars. Until 1976, the Audi 80 B1 was produced, from 1978 to 1986. - Audi 80 B2, in 1986-1991 - Audi 80 B3, and the last three years (until 1994) - Audi 80 B4. The Audi 90 modification denoted Audi 80 cars of a higher configuration and with the most powerful motors. Most deep modernization The brand was produced in 1986. The Audi 80 received the only body type - a four-door sedan. The main innovation was the full galvanization of the entire body, which made it possible for Audi to give a ten-year warranty from through corrosion body series Audi 80 b3 and b4. In 1991, the last restyling was made. From model range Audi 90 disappeared - now all cars of this class bore the designation Audi 80 (in the USA the name Audi 90 remained). The wagon body appeared again - the Audi 80 Avant. Released in the same year diesel audi The 80 TDI is the world champion in efficiency. In 1994, the Audi 80 replaced the Audi A4 model on the assembly line.

The failure of any electrical system may be caused by a blown fuse.

Fuses are assembled in one block. The fuse/relay box is located under the engine compartment hood. The fuses are covered.

There are four spare fuses on the fuse box different power. It's a good idea to have a set of spare fuses in your car. They can be purchased from an Audi dealer.

A- spare fuses

IN- additional fuses (numbers 23-28)

Fuse replacement

Before replacing a fuse, turn off all headlights, bulbs, and electrical equipment of the vehicle, and remove the key from the ignition in order not to damage the electrical system.

To remove the fuse/relay box cover, disengage both latches on the outside of the cover.

Review the fuse list to determine which fuse is protecting the failed circuit.

Remove the blown fuse with a plastic clip.

This clip is located on the cover of the fuse/relay box.

Replace the blown fuse, which can be identified by the blown metal strip, with a fuse of the same rating.

Note!

Don't use a fuse more power, as this may result in damage to any of the electrical equipment and a fire.

If the fuse constantly blows, do not replace it continuously.

Need to find the source of the overload or short circuit. In no case should a piece of foil or wire be installed instead of a fuse, as this can damage any of the electrical equipment and cause a fire.

Audi 80 The third generation has been produced since 1986 in a round, fully galvanized body for corrosion protection, with a soft wedge shape. The year of manufacture of the car is quite old, so the likelihood of problems with electrics or appliances is high.

In case of occurrence emergency situation associated with electrical appliances, you should first check the integrity of the fuses and relays Audi 80. This article will help you.

Fuse box and relay Audi 80 B3:

Fuses and relay Audi 80 located in the niche of the engine compartment, near the right pillar and protected by a cover.

Location and description of the block components:

Block fuses:

1. (15 A) - Front fog lights, rear fog lamp
2. (15 A) - Alarm
3. (25 A) - Horn, brake light, cruise control system(clutch and brake pedals; 1986-1988 models only)
4. (15 A) - Clock, trunk lighting, interior lighting, rear-view mirror, socket, cigarette lighter, radio, on-board computer, air conditioning control unit
5. (30 A) - Radiator Cooling Fan - Full Speed
6. (5 A) - Parking lights with right side
7. (5 A) - Parking lights on the left side
8. (10 A) - Right high beam headlight, signal lamp for switching on high beam headlights
9. (10 A) - Left high beam headlight
10. (10 A) - Right low beam headlight
11. (10 A) - Left low beam headlight
12. (15 A) - instrument panel, lights rear light, differential lock, system automatic control, speed control system (control unit), ABS, control box cooling fan, 4-speed automatic transmission(since 1990)
13. (15 A) - Fuel pump
14. (5 A) - License plate lights, engine compartment and glove box lights, instrument cluster lights
15. (25 A) - Wipers windshield, direction indicators, air conditioning, sprinkler heaters(since 1989)
16. (30 A) - Rear window heater, rear-view mirror heater
17. (30 A) - Cabin / stove / air conditioning fan
18. (5 A) - Power rear-view mirrors, rear window wiper(since 1990)
19. (10 A) - Central locking system, door lock heater (since 1989), anti-theft system(since 1990)
20. (30 A) - Radiator cooling fan - low speed, delay relay
21. (25 A) - Rear cigarette lighter(until 1990)
    Diagnostic unit(since 1990)
22. Reserve
23. (30 A) - Passenger seat position adjuster, driver seat position memory switches
24. (10 A) - Ignition advance I(ECU system KE-Jetronic and Motronic) (until 1989)
    Speed ​​control system (since 1989)
    Reserve(since 1990)
25. (30 A) - Seat heater
26. Reserve(until 1990)
    License plate light, daytime driving warning lights (since 1990)
27. (10 A) - Reserve(until 1989)
    Ignition advance I(since 1989)
28. (15 A) - Ignition advance II(Engine system ECU)
29. Reserve(since 1990)
30. (5 A) - Maintenance system constant speed movements(for models with 4-speed automatic transmission) (since 1990)

Block Relay:

1. Fog lamp relay
2. Engine Cooling Fan Relay ( high speed) (until 1990)
   Reserve (since 1990)
3. Relay for turning on the engine cooling fan when the engine is not running
4. Reserve (until 1990)
   Headlight washer relay (since 1990)
5. Unloading relay
6. A/C relay (before 1990)
   Engine Cooling Fan Relay (High Speed) (since 1990)
7. Horn relay
8. Automatic transmission relay (or jumper on vehicles with manual transmission)
9. Relay intermittent mode windshield wiper and washer operation
10. Fuel pump relay
11. Engine Cooling Fan Relay (Low Speed)

Additional relay box in the cabin:

Additional cabin block the relay is located under the shelf driver's seat. can be installed additional relays or control blocks, the first six cells are provided by default. To the right of them are detachable cable contact panels.

Location of the main and additional contact cells:

Relay purpose:

1. ABS relay
2. Alarm relay unfastened belt security
3. Interior lighting relay
4. A/C Clutch Relay
5. Reserve (until 1990)
   From 1990: Windshield washer relay
6. Relay for headlights
7. Reserve
8. Reserve
9. Reserve (until 1990)
   Auto Shift Lock Relay (since 1990)
10. Reserve
11. Reserve
12. Reverse current relay (power seats, power mirrors) (until 1990)
    Reserve (since 1990)
13. Passenger Seat Heater Relay
14. Driver Seat Heater Relay
15. The relay of the electric drive of the sunroof and windows
16. Anti-theft warning light relay
17. Reverse current relay (electric seats and rear-view mirrors) (since 1990)

Audi 80 B3 Owner's Manuals:

If you have experience with repair, troubleshooting, or information on this topic, leave your comment below, helpful information will be added to the article.

This material provides information on the locations and diagrams of fuses and relays for a car Audi 80 B4. this model Audi company presented in 1991. The main difference from the previous one is updated design hood, bumper and headlights. In the interior trim, better material was used and airbags appeared. Newly designed rear axle, and a gas tank. Produced this model in 1992, 1993, 1994 and 1995.

The Audi 80 b4 has two main relay and fuse boxes. The main one is located in the under-smoked space of the engine compartment, on the left side, closer to the wipers. Second under dashboard in the cabin.

1. diagnostic connector
2. fuses 1-21. For vehicles with diesel engines, fuse 22.
3. additional fuses 23-32
4. four spare fuses
5. relay designation on the cover of the distribution panel
6. clip for removing and installing fuses

The data presented is generic. Check the description on reverse side protective cover.

Scheme of this block

Decryption

№	Purpose
1	15A Fog lights, rear fog lights
2	15A Alarm
3	30A Horn, seat heating
4	15A Electronic clock, trunk light, interior light, vanity mirror, reading light, cigarette lighter, on-board computer, automatic air conditioning, radio, self-diagnosis system
5	30A 2nd Radiator Fan Speed
6	5A Rear right marker and parking lights
7	5A Rear left position and parking lights
8	10A Right high beam headlight, high beam warning light
9	10A Left high beam headlight
10	10A Right low beam headlight, right headlight adjustment motor
11	10A Left low beam headlight, left headlight adjustment motor
12	15A Instrument panel, reversing lights, control system, automatic transmission, differential lock, on-board computer, speed control, retarder relay interior lighting with, electronic thermal switch, relay for turning on the fan radiator airflow
13	15A Fuel pump
14	5A License plate lighting, instrument panel lighting, engine compartment lamp, glove box lighting, automatic air conditioning
15	25A Direction indicators, windshield wiper, glass washer pump, heated glass washer jets, radiator blower fan relay, air conditioning
16	30A Heated rear window, heated mirrors
17	30A Cabin blower, automatic air conditioning
18	5A Electric mirrors
18	15A Rear window cleaner (Avant)
19	10A Central locking, lock switch cylinder heating, anti-theft system
20	30A Radiator blower, 1st speed, interior fan
21	10 Diagnostic connector
22	Not used (vehicles with petrol engines)
22	80A Glow plugs (cars with diesel engines)

Additional fuses audi a 80 b4 lower row (if any)

Fuses 27 and 28 can be fitted with a red plastic cap with "Motor/Moteur" inscription.

For the cigarette lighter, fuse number 4 is responsible for 15A.

Relay

1. Relay for fog lamps and tail lamps. Vehicles without fog lamps have a jumper in this position.
2. Radiator fan relay (for vehicles without air conditioning), radiator fan relay for turning on the 2nd stage of rotation
3. Fan activation relay
4. Headlight washer relay
5. X-contact unload relay
6. Passenger compartment blower relay (manual A/C), 2nd stage A/C fan relay (automatic A/C)
7. Horn relay
8. Anti-theft horn relay (vehicles with manual transmission). Cars without such a system have a jumper. For vehicles with automatic transmission, this place is free.
9. Wiper Interval Relay
10. Fuel pump relay
11. Radiator fan relay for turning on the 1st stage of rotation.

Attention! For vehicles with diesel engines, pos. 2 and 3 are unoccupied and relay 10 is the glow plug relay.

Additional relay box in the cabin

To access the unit, unscrew 4 screws and remove the protective cover.

On different modifications, not all relays can be occupied.

Description

1. ABS system
2. Seat Belt Warning Light
3. Interior lighting control unit
4. A/C Clutch Relay Box
5. Wiper and glass rear window washer
6. Oil pressure monitor, front lighting control unit
7. Not used
8. Not used
9. Automatic shift lock (only for vehicles with automatic transmission)
10. Not used
11. Not used
12. Heated passenger seats
13. Heated driver's seat
14. Car sunroof relay
15. Electric sunroof and door glass control unit
16. Anti-theft warning light relay
17. Power door windows, power sunroof, power seat circuit breaker

Changes for diesel vehicles

5 - electric current relay 12 - acoustic signal relay (door not closed, seat belt not fastened) 13.14 - exhaust gas recirculation control relay 15 - lighting lamp control relay 18 - 3rd speed relay for radiator fans (usually 2nd speed) K - radiator fan fuse S - electric current fuse.

Additional Information

Video example of a non-working relay on an Audi 80

Repair and maintenance book

If you still have questions, ask them in the comments or download the repair manual and operation of Audi 80 1991-1995: "". Use djvu reader to view.

Quite in operation a large number of cars from the AUDI family. They have proven to be reliable, comfortable cars. In their equipment there is a large number of equipment that uses power from onboard network car. A fuse block is used to protect against its failure. This module is designed to install 28 protective devices, several of them are spare.

To facilitate detection and replacement faulty device manufacturers adopted a single condition for designating the allowable current for all color code in all Audi units.

This block is placed in the engine compartment of the Audi 80. In addition to fuses, it has electromagnetic relays. The main purpose of their installation is to protect against wear and tear. high current switch contacts, steering column switch, other devices. There are 11 such relays in the module. Separate vehicle modifications may have wire jumpers instead of electromagnetic relays. That's why check the diagram of the fusible links on the cover of your car with the description of the module.

Advice! It is impossible to install a device with a large rated value of the transmitted current to replace a burned-out fuse-link.

If this condition is not observed, expensive electronic equipment may fail. There have been many cases of electrical wiring fires due to this.

The block diagram of the Audi 80 b3 fuses, the diagram of which is shown below, differs from other, later models of this family.

The relays in the mounting module are responsible for connecting the following consumers of the vehicle's on-board voltage:

1. Fog lights, rear parking lights. In the case where fog lights are not available, a jumper wire will be installed;
2. Second fan for cooling power unit;
3. Turns on the fan in the engine cooling system after it stops;
4. Headlight cleaning system connection module;
5. Relay X contact;
6. The second fan (relay) for cars with an automatic air conditioning system;
7. klaxon;
8. alarm system;
9. Intermittent wiper mode;
10. Electric fuel pump;
11. The first fan in the cooling system.

The Audi 80 b3 fuse box has another module located inside the car. In it, depending on the modification and configuration, 18 relays can be installed. Some of them may not be required. They will provide power to the following consumers:

1. ABS system;
2. Alarm about not fastened seat belt;
3. Relay for switching on internal lighting;
4. Air conditioner clutch;
5. Temporarily unused;
6. head lighting;
7. Temporarily unused;
8. Temporarily unused;
9. Temporarily unused;
10. Temporarily unused;
11. Temporarily unused;
12. Relay supplying reverse current for electric seats and rear-view mirrors;
13. Heating of the passenger seat;
14. Heat driver's seat;
15. Electric drive for sunroof, power windows;
16. The same consumers;
17. Not used;
18. Not used.

A little about the electrical equipment of the Audi 80 b4

This car is a later release, so it is more perfect. It also has protective fusible links in the electrical system of the machine. This model in its electrical equipment has diagnostic connector. They connect to it service equipment to service the machine. The Audi 80 b4 block has 21 fuses, in models with diesel engine one more, plus two additional appliances.

There was also a place in the block for installing spare fuses in the amount of 4 pieces. For the convenience of detecting and replacing a faulty fuse-link with a new one, the cover has symbols with applied consumers and the nominal value of the permissible current. There is also a pair of tweezers for easy removal and installation of elements. In these models, the fuse box is also mounted in engine compartment. If you look into engine compartment, you can see the mounting block under the windshield.

Advice! The detection and replacement of a failed fuse in the Audi 80 unit is carried out with the engine turned off.

Before installing a new protective fuse in the unit, it is necessary to find and then eliminate the cause of the failure of the Audi 80 fuse. Why is this necessary? Burnout of the fuse-link is possible only when the current consumption is exceeded. It can occur after a short circuit in consumer circuits, when these consumers fail. If this problem is not corrected, the fuse links will burn out.

In conclusion, I would like to remind you once again that modules with fuses different models are different. So, the Audi 80 b2 fuse box is different from the b3, b4 models.