Audi 100 (C4; 1992 – 1994) – fuse box diagram

Year of production: 1992, 1993, 1994

 

This article covers the second-generation   Audi 100 (C4), produced from 1990 to 1994. It includes fuse box diagrams for the 1992, 1993 and 1994 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

Passenger compartment

Fuse box diagram

 

Assignment of the fuses in the passenger compartment (instrument panel)

№	A	Description
1	15	Rear fog lights
2	15	Emergency flash switch, anti-theft system (USA only)
3	25	Horns, brake lights switch
4	15	Luggage compartment, light, cigar lighter, interior lights
5	30	Not used
6	5	Tail lights, side marker light, RF
7	5	Tail lights, side marker light, LF
8	10	Headlight, hi-beam, right
9	10	Headlight, hi beam, left
10	10	Headlight, lo beam, right
11	10	Headlight, lo beam, left
12	15	Automatic transmission, backup lights, interior lights
13	15	Fuel pump
14	5	License plate lights, glove compartment light, engine compartment light, center console
15	25	Wipers/washer
16	30	Rear defogger
17	30	Fresh air fan, air conditioning
18	5	Power mirror switch
19	10	Central locking system, anti-theft system (USA only)
20	30	Heated seats
21	25	Fuel injection control unit, diagnostic
22	—	Open
23	—	Open
24	—	Open
25	—	Open
26	5	Speedometer, power mirrors
27	10	Ignition control unit
28	15	Fuel injection control unit, electronic engine cintrol
29	—	Open
30	5	Automatic transmission

 

№	Description
1	Rear fog light jumper plug
2	Rad. cooling fan relay 2nd stage
3	Rad. cooling fan relay after run control unit
4	Open
5	Load reduction relay
6	Open
7	Horn relay
8	Automatic transmission/anti-theft relay
9	Wash/wiper intermit, relay
10	Fuel pump relay, J17
11	Open

Fuse box diagram

 

Assignment of the  fuses in the passenger compartment (instrument panel)

№	Description	Color
A	Air conditioning connector	Gray
B	Right front wiring harness connector	Black
C	Instrument panel connector	Blue
D	Left front wiring harness connector	Green
E	Left front wiring harness connector	Yellow
F	Instrument panel connector	Brown
G	Instrument panel connector	Red
H	Rear wiring harness connector	Black
I	Instrument panel connector	Red
J	Instrument panel connector	Yellow
K	—	—
L	Single connector (terminal 30) connector	Colorless
M	For optional equipment connector	Colorless
N	—	—
O	—	—
P	To fuse 26	—

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi 100 (C3; 1983 – 1991) – fuse and relay box diagram

Year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991

 

This article covers the second-generation  Audi 100 (c3), produced from 1983 to 1991. It includes fuse box diagrams for the 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 and 1991 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Fuses box diagram

 

Assignment of the  fuses in the fuse box

№	A	Description
1	15	Fog lights, rear fog lights
2	15	Emergency flashers
3	25	Horn, brake lights
4	15	Reading lights, luggage compartment, cigar lighter, interior lights, make-up mirror, Board Computer
5	30	Not used
6	5	Side marker, park lights, right
7	5	Side marker, park lights, left
8	10	Hi-beam headlight, hi-beam indicator light
9	10	Hi-beam headlight, left
10	10	Low beam, headlight, right
11	10	Low beam, headlight, left
12	15	Instrument cluster, back-up lights, cruise control, electronic thermoswitch
13	15	Fuel pump
14	5	Glove compartment, engine compartment, license plate lights
15	25	Windshield wipers
16	30	Rear window heat element, outside mirror heat element
17	30	Fresh air blower
18	5	Rear wiper (wagon)
19	10	Central locking system and fuel injection control unit 100, 100 Quattro
20	30	Heated seats with Memory Seat
21	25	Not used
22	–	Not used
23	30	Not used
24	10	Not used
25	30	Power seats with memory, passenger power seat
26	5	Auto-Check, power mirrors, driver’s seat memory control
27	10	Ignition control unit 100, 100 Quattro
28	15	Fuel injection control unit II
29	–	Spare fuses

 

Relay box diagram

 

Assignment of the  relays in the relay box

№	Description
1	Open
2	Radiator cooling fan (stage 2)
3	100 models — radiator cooling fan after-run 200 models — radiator cooling fan (stage 1)
4	Not used
5	Load reduction relay
6	Not used
7	Horn
8	Anti-theft relay
9	Intermittent washer/wiper
10	Fuel pump
11	A/C relay

Auxiliary relay panel

 

Assignment of the  relay in the auxiliary relay box

№	Description
1	Open
2	Seat belt/park light radio warning control unit
3	Interior light delay control unit
4	Open
5	Lamp control unit, front
6	Open
7	Rad coolant fan relay 3rd stage
8	ABS combination relay
9	Intensive washer relay
10	Power window control unit
11	Power window control unit
12	Rear window wiperwasher relay
13	Open
14	Circuit breaker for windows
15	Driver heated seat relay
16	Passenger heated seat relay
17	Open

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.