The UK quattro Network
The UK's mobile Audi 5-cylinder mechanic - 07833 654800, 24x7
Specialist in turbos, quattros, electrics and non-starts
Use your browser's scrolling facility to locate the component. The second column gives the Audi designation for it in the wiring diagrams. The third column contains links to the diagrams in which this component appears - the abbreviation identifies the function and the number is the track number on that particular page of the diagram. Where there is no abbreviation, the component is in the base diagram. Click on the link to load the .PNG image into your browser and scroll to the track number, looking for the name from column 2. If the component is a relay or controller, clicking on the name will load a separate locator - this also has clickable links to locate the device more completely.
There are also notes to these diagrams.
| Component | Designation | Track |
|---|---|---|
| ABS accelerometer | E113 | ABS 24-25 |
| ABS controller | J104 | ABS 1-25 |
| ABS hydraulic unit | N55 | 12-22 |
| ABS magnetic valve relay | J106 | 17-19 |
| ABS relay | J156 | 21-26 |
| ABS return pump | V39 | 20 |
| ABS return pump relay | J105 | 21-22 |
| ABS solenoid valve - front left | N59 | 15 |
| ABS solenoid valve - front right | N58 | 14 |
| ABS solenoid valve - rear | N77 | 13 |
| ABS wheel sensor - front left | G47 | 8-9 |
| ABS wheel sensor - front right | G45 | 4-5 |
| ABS wheel sensor - rear left | G46 | 6-7 |
| ABS wheel sensor - rear right | G44 | 2-3 |
| Air conditioning evaporator thermoswitch | E33 | 16 |
| Air conditioning high pressure switch | F23 | 63, 26 |
| Air conditioning low pressure switch | F73 | 17 |
| Air conditioning magnetic clutch | N25 | 17 |
| Air conditioning magnetic clutch controller | J153 | 202, 15-18 |
| Air conditioning outside temperature switch | F38 | 63, 11 |
| Air conditioning recirc flap valve | N63 | 10 |
| Air conditioning switch | E30 | 12-13 |
| Alternator | C | 10, (dash) 7 |
| Ashtray light | L15 | 182 |
| Battery | A | 9 |
| Boot light | W3 | 167 |
| Brake fluid level switch | F34 | 61, (dash) 11 |
| Brake light switch | F | 128, (c/c) 3, (ABS) 3 |
| Brake servo warning switch | F21 | 62, (dash) 12 |
| Bulb - blinker, front left | M5 | 104, (dash) 15 |
| Bulb - blinker, front right | M7 | 101, (dash) 20 |
| Bulb - blinker, rear left | M6 | 105, (dash) 16 |
| Bulb - blinker, rear right | M8 | 100, (dash) 19 |
| Bulb - blinker, side (left) | M18 | 103, (dash) 15 |
| Bulb - blinker, side (right) | M19 | 102, (dash) 20 |
| Bulb - cigarette lighter | L28 | 180 |
| Bulb - dashboard illumination | L10 | 2,3 |
| Bulb - differential lock display | L55 | 190-192 |
| Bulb - differential lock switch | L61 | 195 |
| Bulb - fog light switches | L40 | 143, 147, 5 |
| Bulb - fresh air controls | L16 | 178, (dash) 40 |
| Bulb - hazard flasher switch | L35 | 117, (dash) 26,29 |
| Bulb - heated rear screen switch | L39 | 165, (dash) 26,29 |
| Bulb - heated seat switches | L44 | 7 |
| Bulb - heater control | L21 | 5 |
| Bulb - left parking light | M1 | 119 |
| Bulb - light switch | L9 | 80 |
| Bulb - left brake light | M9 | 128, 2 |
| Bulb - left rear light | M4 | 126 |
| Bulb - left reversing light | M16 | 123 |
| Bulb - right brake light | M10 | 127 |
| Bulb - right rear light | M2 | 125 |
| Bulb - right reversing light | M17 | 124 |
| Bulb - right parking light | M3 | 121 |
| Cigarette lighter | U1 | 181 |
| Coil | N | 45-46 |
| Cold start valve | N17 | 19 |
| Computer reset button | E92 | 28 |
| coolant level warning switch | F66 | 206, (dash) 24 |
| Coolant temperature gauge | G3 | (dash) 39,40 |
| Coolant temperature sender | G62 | 24 |
| Coolant temperature sender | G2 | (dash) 40 |
| Cruise control brake pedal switch | F47 | 1 |
| Cruise control clutch pedal switch | F36 | 7 |
| Cruise control control unit | E46 | 6-9 |
| Cruise control switch | E45 | 1-6 |
| Differential lock controller | J187 | 193-195, 8 |
| Differential lock warning switch | F100 | 186, 24 |
| Differential lock warning switch (note) | F99 | 25 |
| Digital Dashboard (orange) with computer | J128 | 28-36 |
| Distance (speed) sender (note) | G22(G54) | 34,44 50 (c/c) 10 (dash) 44-46 |
| Distributor | O | 43-47 |
| Electric mirror control switch | E43 | 2-5 |
| Electric mirror control crossover switch | E48 | 11-12 |
| Electric mirror magnetic clutch - left | N35 | 5 |
| Electric mirror magnetic clutch - right | N42 | 9 |
| Electric mirror motor - left | V17 | 4 |
| Electric mirror motor - right | V25 | 2 |
| Electric window switch - left | E40 | 1-6 |
| Electric window switch - right | E41 | 8-12 |
| Electronic control unit (ECU) | J88 | 19-40, (a/c) 19-41 (dash) 3, 38 |
| Electronic thermoswitch | F76 | 202-204 (a/c) 18-21 (dash) 23 |
| Fog light - left | L22 | 145 |
| Fog light - right | L23 | 145 |
| Fog light (rear) | L20 | 139 |
| Fog light switch | E7 | 145, 23 |
| Fresh air blower | V2 | 174, (a/c) 4 |
| Fresh air blower relay (a/c) | J13 | 5-7 |
| Fuel economy display adjustment | E89 | (dash) 27 |
| Fuel consumption sender | G58 | 208-210, (dash) 18-20 |
| Fuel frequency valve | N7 | 19 |
| Fuel gauge | G1 | 45,46 |
| Fuel gauge adjustment | E89 | 47 |
| Fuel gauge sensor | G | 57(dash) 45 |
| Fuel pump | G6 | 56, 38 |
| Fuel pump relay | J17 | 25-30, (a/c) 39-41 (dash) 1-3 |
| Full load (WOT) switch | F81 | 39 |
| Fuse 1 - fog lights, air conditioning | S1 - 15A | 145,21 |
| Fuse 2 - hazard flashers | S2 - 15A | 116 |
| Fuse 3 - Brake lights, ABS | S3 - 25A | 128, 3 |
| Fuse 4 - Radio, trip computer, cigarette lighter, interior light | S4 - 15A | 5, (dash) 33 |
| Fuse 5 - Unused | S5 | 67 |
| Fuse 6 - right sidelight | S6 - 5A | 121 |
| Fuse 7 - left sidelight | S7 - 5A | 119 |
| Fuse 8 - right headlight main beam main beam warning light | S8 - 10A | 131, (dash) 23 |
| Fuse 9 - left headlight main beam | S9 - 10A | 131 |
| Fuse 10 - right headlight dipped beam | S10 - 10A | 133 |
| Fuse 11 - left headlight dipped beam | S11 - 10A | 134 |
Fuse 12 - Intermittent and trivial current users:
| S12 - 15A | 60 (a/c) 19 |
| Fuse 13 - fuel and turbo cooling pumps | S13 - 15A | 55 |
| Fuse 14 - number plate lights | S14 - 5A | 137 |
| Fuse 15 - radiator fan relays, rear washer | S15 - 25A | 68, 4 |
| Fuse 16 - heated rear screen, digital dashboard | S16 - 30A | 164, (dash) 37 |
| Fuse 17 - Fresh air fan, air conditioning | S17 - 30A | 174, (a/c) 3 |
| Fuse 18 - Rear wiper | S18 - 30A | 3 |
| Fuse 19 - central locking | S19 - 10A | 2 |
| Fuse 20 - electric mirrors, heated seats | S20 - 30A | 3, 12 |
| Fuse 21 | S21 | 95 |
| Fuse 22 | S22 | 32 |
| Fuse 24 (ECU) | S24 | 45 |
| Fuse 28 - fuel frequency valve | S28 | 29 |
| Fuse 43 - electric window thermal cutout | S43 | 1 |
| Fuse - unnumbered - ABS pump and controller | On relay | ABS 22 |
| Gearbox switch for differential lock | F100 | 186 |
| Glovebox light | W6 | 177, (a/c) 4,5 |
| Hall sender | G40 | 36-38 |
| Handbrake warning switch | F9 | 59, (dash) 9 |
| Hazard flasher relay | J2 | 108-116, (dash) 30 |
| Hazard flasher switch | E3 | 108-116 (c/c)8 (a/c) 21 (dash) 14 21, 26 |
| Headlamp bulb, auxiliary, left | L13 | 131, (dash) 25 |
| Headlamp bulb, auxiliary, right | L14 | 136, (dash) 22 |
| Headlamp bulb, left | L1 | 132-133, (dash) 24 |
| Headlamp bulb, right | L2 | 134-135, (dash) 23 |
| Heated mirror - left | Z4 | 7 |
| Heated mirror - right | Z5 | 10 |
| Heated rear screen | Z1 | 164, 7 |
| Heated rear screen switch | E15 | 164, (elec mirrors) 7 (dash) 17, 38 |
| Heated seat element - left squab | Z6 | 3 |
| Heated seat element - left back | Z7 | 2 |
| Heated seat element - right squab | Z8 | 12 |
| Heated seat control - right back | Z9 | 13 |
| Heated seat control - left | E94 | 5,6 |
| Heated seat control - right | E95 | 8,9 |
| Heated seat temperature sender - left | G59 | 4 |
| Heated seat temperature sender - right | G60 | 10 |
| Horn | H2 | 148-150 |
| Horn pad | H | 151 |
| Horn relay | J4 | 150-151 |
| Hydraulic fluid level switch | F75 | 60, (dash) 10 |
| Idle stabilisation controller | J142 | 49-54, (a/c) 8,16 (dash) 37, 41 |
| Idle stabilisation valve | N66 | 50 |
| Idle switch | F60 | 38 |
| Ignition switch | D | 78-82, (dash) 13 |
| Ignition switch load reduction relay | J59 | 142 |
| Ignition timing sender (black connector) | G4 | 25-27 |
| Ignition power output stage | N70 | 41-43 |
| Indicator switch | E2 | 108-110 (dash) 14, 21 |
| Injector cooling fan | V38 | 35 |
| Injector cooling fan relay | J97 | 32-33, (a/c) 41 |
| Inlet air temperature sender | G42 | 34, 35 |
| Instrument panel dimmer | E20 | 95, 96, (dash) 40,41 |
| Interior light | N39 | 169-171 |
| Knock sender (red connector) | G61 | 31-33 |
| Light switch | E1 | 83-93, (dash) 11 |
| Main beam and headlight flasher | E4 | 83-85, (dash) 11, 26 |
| Oil pressure sender | G10 | 198 |
| Oil pressure control unit | J114(J150) | 198-200 (dash) 5 37 |
| Oil temperature sender | G8 | 189 |
| Oil temperature gauge | G9 | 189 |
| Parking light switch | E19 | 89-91 |
| Photosensor | G73 | (dash) 5,6 |
| Radiator fan | V7 | 69, (a/c) 31 |
| Radiator fan L1 relay | J26 | 72-73, 34-35/A> |
| Radiator fan L2 relay | J101 | 68-69, (a/c) 30-31 |
| Radiator fan L2 thermoswitch | F18 | 68, 30 |
| Radiator fan L3 relay | J135 | 64-66, (a/C) 26-28 |
| Radiator fan L3 thermoswitch | F54 | 67, 29 |
| Radiator fan resistance pack | N39 | 70 |
| Radio | R | 183-185, (a/c) 5 |
| Rear screen wash/wipe motor | V12 | 1-3 |
| Rear screen wash/wipe pump | V13 | 5 |
| Rear screen wash/wipe relay | J30 | 3-4 |
| Resistive cable | N74 | 18 |
| Resistor pack for frsh air fan | N23 | 15, (a/c) 4 |
| Revolution counter | G5 | (dash) 39,40 |
| Reversing light switch | F4 | 123, 18 |
| RPM sender (white connector) | G28 | 28-30 |
| Spark plugs | Q | 43-47 |
| Spark plug caps | P | 43-47 |
| Speedometer | G5 | (dash) 41,42 |
| Starter | B | 12-16 |
| Switch - left door | F2 | 170-171 |
| Switch - right door | F3 | 172 |
| Switch for boot light | F5 | 167 |
| Switch for reduced display | E88 | 97, (dash) 42 |
| Switch for fresh air fan | E9 | 172-175, 1-4 |
| Switch for function selection | E91 | 165, (dash) 29-31 |
| Switch for interval wash/wipe | E22 | 155-159, 4-5 |
| Switch for rear differential lock | E121 | 172-175 |
| Switch for rear fog light | E18 | 139, 23 |
| Switch for reduced display | E88 | 97 |
| Thermoswitch for idle stabilisation | F74 | 52 |
| Thermoswitch for turbo cooling pump | F98 | 30 |
| Thermoswitch for V38 | F61 | 36 |
| Turbo cooling pump | V51 | 31, (a/c) 39 |
| Turbo cooling pump controller | J155 | 27-29, (a/c) 34-38 |
| Voltmeter | G14 | 188 |
| Warm-up regulator | N9 | 55, (a/c) 33 |
| Warning buzzer for lights & radio | J152 | 92-95, 39 |
| Warning light - ABS | K47 | 28, (dash) 10 |
| Warning light - Alternator | K2 | 8 |
| Warning light - differential lock | K46 | 187 |
| Warning light - differential lock | K81 | 193 |
| Warning light - differential lock(note) | K45 | 25 |
| Warning light - engine electronics | K66 | 4 |
| Warning light - fog light | K17 | 146 |
| Warning light - hand brake | K14 | 9 |
| Warning light - hazard flashers | K6 | 107 |
| Warning light - heated seat, left | K59 | 4 |
| Warning light - heated seat, right | K68 | 9,10 |
| Warning light - indicator, left | K65 | 16 |
| Warning light - indicator, right | K64 | 19 |
| Warning light - lights not on | K73 | 11 |
| Warning light - oil pressure | K3 | 5 |
| Warning light - main beam | K1 | 18 |
| Warning light - rear fog light | K13 | 10 |
| Warning light - rear screen heater | K10 | 17 |
| Wastegate frequency valve | N75 | 20 |
| Wiper interval relay | J31 | 156-159 |
| Wiper motor | V | 156 |
