Vehicle wiring diagrams Audi 100 C3

Explanation of electrical circuits
Most consumers of electricity are connected to the "ground" by brown wires. For the correct connection of electrical equipment devices, their contacts are...

Ground connection points
12 - ground point on the left in the engine compartment; 32 - ground point on the left behind the instrument panel; 50 - ground point on the left in the trunk;...

Generator, battery, starter
A - battery; B - starter; C - generator; C1 - voltage regulator; F26 - time thermal switch; F93 - pressure step switch; N17 - starting injector; T1a - 1-pin...

Ignition system, fuel pump relay
G - fuel level indicator sensor; G6 - Electric Fuel Pump; G40 - Hall sensor; J17 - fuel pump relay; N - ignition coil; N9 - engine heating regulator; N41 -...

Idle speed stabilization, oil pressure control
F1 - oil pressure sensor (0.18 MPa); F22 - oil pressure sensor (0.03 MPa) (3114); F25 - Throttle switch; J114 - Oil pressure control unit; J139 - control unit...

Radiator fan (operation after engine stop)
F54 - Fan thermal switch; F87 - Fan thermal switch after engine stop; J101 - Second speed fan relay; J138 - After-stop fan control unit; S5 - fuse in the...

Direction indicators, hazard warning lights, brake lights
E2 - direction indicator switch; E3 - hazard warning switch; F - brake light switch; J2 - emergency signal relay; M2 - right rear light bulb; M4 - left rear...

Ignition switch, parking brake signals
D - ignition switch; E1 - headlight switch; E19 - Parking light switch; J152 - Parking brake warning horn; M1 - left parking light bulb; M3 - right parking...

Turn signal, side light and headlight switch
E4 - hazard warning switch; L1 - double-filament left headlight bulb; L2 - right headlight dual-filament; S8-S11 - fuses on the relay board; T6k - 6-pin...

Headlights and rear fog lights
E7 - fog light switch; E18 - Rear fog light switch; L20 - rear fog light bulb; L22 - connection of the left fog light; L23 - connection of the right fog light;...

Reversing lights, instrument panel lighting, engine compartment lighting
F4 - Reversing light switch (3221); F15 - gearbox switch (1st gear in a 5-speed gearbox); L28 - cigarette lighter lamp; M16 - left reversing light bulb; M17 -...

Windscreen wipers, windscreen washers, headlight washers, horn
E22 - intermittent wiper switch; H - sound signal button; H1 - high tone signal; J4 - high tone signal relay; J31 - Automatic windscreen wiper and windscreen...

Coolant and brake pad wear warning lights
F14 - coolant overheating sensor; F21 - brake booster sensor; F34 - brake fluid level sensor; F66 - coolant level sensor; F75 - hydraulic oil pressure sensor;...

Instrument panel, speedometer
F9 - Parking brake switch; G1 - fuel level indicator; G3 - coolant temperature gauge; G5 - tachometer; G21 - speedometer; G22 - speedometer sensor; K2 -...

Instrument panel
E20 - Instrument panel lighting controller; K1 - headlight indicator lamp; K6 - hazard warning light indicator; K64 - Right direction indicator lamp; K65 -...

Rear window heating, heater fan
E9 - heater fan switch; E15 - Rear window heating switch; F51 - overheating protection unit; L16 - heater control panel illumination lamp; N₂4 - Heater fan...

Cigarette lighter, cigarette lighter lighting, radio
L15 - ashtray lighting lamp; L28 - cigarette lighter lamp; L32 - Rear ashtray lighting lamp; R - radio connection block (radio with built-in volume control);...

Interior trunk lighting
F2 - door switch (front left) with contact for sound signal; F3 - door switch (front right); F5 - trunk light switch; F10 - door switch (back left); F11 - door...

KE-Jetronic injection device
A - battery; B - starter; G19 - air flow meter potentiometer; G39 - lambda probe; J21 - fuel injection control unit; N71 - idle speed stabilization valve; N73...

Fuel injection with controlled knock combustion
D - ignition switch; F26 - time thermal switch; F60 - Idle switch; F81 - Full Load Switch; G6 - fuel pump; G40 - Hall sensor; G61 - knock sensor; J17 - fuel...

Ignition system, oil pressure control device
C - generator; F1 - oil pressure sensor (0.18 MPa); F22 - oil pressure sensor (0.03 MPa); J114 - Oil pressure control unit; J139 - control unit for electric...

Instrument panel, coolant temperature sensor
F4 - Reverse light switch; F15 - gearbox switch; F66 - Coolant Temperature Gauge Sensor; F76 - electronic thermal switch; G3 - coolant temperature indicator;...

KE III-Jetronic injection system (100 kW engine)
A - battery; D - ignition switch; E17 - ignition interlock switch and reversing light switch; G39 - lambda probe (2341) (2342); J21 - fuel injection control...

Battery, starter, generator (diesel engine)
A - battery; B - starter; C - generator; C1 - voltage regulator; D - starter switch; T1a - 1-pin connector on the right in the engine compartment; T1b - 1-pin...

Glow plugs, glow plug relay
G62 - Coolant Temperature Sensor (2312); J52 - glow plug relay (4111); J179 - Automatic heating time control unit (4112); N36 - Additional resistor of...

Oil pressure monitoring device
F1 - oil pressure sensor (0.14 MPa); F22 - oil pressure sensor (0.03 MPa) (3114); F107 - Boost Pressure Limiting Valve Switch; J114 - Oil pressure control...

Instrument panel housing
D - starter switch; F66 - coolant level sensor; F76 - electronic thermal switch; G3 - coolant temperature gauge; G5 - tachometer; G22 - speedometer sensor; J6...

Electrically adjustable and heated exterior mirrors
D - ignition switch; E43 - mirror motor switch; E48 - mirror adjustment switch; T4 - 4-pin connector (black) behind the instrument panel; T26 - 26-pin...

Central lock
D - ignition switch; F2 - door switch (left front) with horn contact; F59 - Driver side central locking switch; F114 - Passenger side central locking switch;...

Radio tape recorder
D - ignition switch; E1 - headlight switch; E15 - rear window heating switch; E19 - Parking light switch; E20 - Instrument panel lighting controller; G21 -...

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100(C4, 1990-1994)

100(C4, 1990-1994, petrol)

100(C3, 1982-1990)

100(C3, 1982-1990, petrol)

100(C3, 1982-1990, diesel)