Numerical designations (points and mass connections)
Note: The number in the rectangle at the end of the wire indicates the coordinate of the continuation of this wire (within the same scheme).
| 1 | Ground wire between battery and body |
| 12 | Mass point, in the engine compartment, on the left |
| 14 | Ground point, on manual/DSG |
| 15 | Mass point on cylinder head |
| 78 | Ground point, lower right B-pillar |
| 281 | Earth connection No. 1, in the wiring harness of the engine compartment |
| 283 | Earth connection No. 2, in the wiring harness of the engine compartment |
| 306 | Mass connection (ignition coils), in the wiring harness of the engine compartment |
| 327 | Mass connection (sensor mass), in the wiring harness of the engine compartment |
| 366-389 | Ground connection #1-#24, in the main wiring harness |
| 410 | Ground connection #1 (sensor mass), in the main wiring harness |
| 458 | Mass point No. 3, in the wiring harness of the engine compartment |
| 474 | Mass connection (sensor mass), in the wiring harness of the engine compartment |
| 607 | Mass point, in air intake chamber on the left |
| 671 | Weight point #1 front on the left side member |
Designations on "A"And"IN" (battery, starter, connections)
Note: All connections listed are in the main wiring harness.
| A | Battery |
| IN | Starter |
| B273 | positive connection (15) |
| B276 | positive connection (50) |
| B277-B282 | Positive connection #1-#6 (15a) |
| B315-B327 | Positive connection #1-#13 (30a) |
| B335 | Compound 1 (54) |
| B344 | Compound 1 (61) |
| B350-B354 | Compound 1-5 (87a) |
| B383-B385 | Connection #1-#3 (CAN-P high bus) |
| B390-B392 | Connection #1-#3 (CAN-P low) |
| B708 | Compound #1 (instrument cluster CAN bus, high) |
| B709 | Compound #1 (instrument cluster CAN bus, Low) |
Designations on "WITH" - "E" (generator, connections, switches)
Note: All connections shown are in the engine compartment wiring harness.
| SH1 | Generator with voltage regulator |
| D141 | Compound (5V) |
| D174 | Compound 2 (5V) |
| D189 | Compound (87a) |
| D196 | Compound 2 (87a) |
| E221 | Control panel on the multifunction steering wheel |
Designations on "F" (sensors, sensors-switches)
| F | D/B brake lights |
| F22 | Engine oil pressure sensor |
| F47 | Brake Pedal Position Sensor |
| F378 | D/V low pressure engine oil |
Designations on "G" (sensors)
| G | Fuel gauge sensor |
| G1 | Fuel gauge |
| G3 | coolant temperature gauge |
| G5 | Tachometer |
| G6 | Filling pump for fuel supply system |
| G21 | Speedometer |
| G28 | crankshaft speed sensor |
| G31 | Turbo boost pressure sensor |
| G39 | Lambda probe |
| G40 | CMP sensor |
| G42 | IAT sensor |
| G61 | Knock sensor #1 |
| G62 | coolant temperature sensor |
| G70 | Mass air flow sensor |
| G79 | Gas pedal position sensor |
| G83 | Coolant temperature sensor at the outlet of the radiator |
| G85 | Steering angle sensor |
| G130 | Post catalytic lambda probe |
| G169 | Sensor No. 2 of the fuel gauge |
| G185 | Gas pedal position sensor No. 2 |
| G186 | Throttle Actuator |
| G187/G188 | Throttle Angle Sensor #1/#2 |
| G247 | Fuel pressure sensor |
| G266 | Engine oil level and temperature sensor |
| G273 | Anti-theft alarm interior volume sensor |
| G299 | Intake air temperature sensor No. 2 |
| G336 | Intake manifold flap potentiometer |
| G384 | Vehicle tilt sensor |
| G397 | Rain and light sensor |
| G419 | ESP sensor block |
| G476 | clutch position sensor |
Designations on "H" (sound signals)
| H12 | Alarm siren |
Designations on "J" (electronic control units, relays)
| J104 | ABS/ESP control unit |
| J151 | Relay for continuous coolant circulation |
| J217 | DSG transmission control unit |
| J234 | SRS control unit |
| J255 | Climatronic climate control unit |
| J271 | Power Relay ECM Motronic (main relay) |
| J285 | Control unit in instrument cluster |
| J293 | Radiator fan control unit |
| J301 | Climatic control unit |
| J338 | Throttle module |
| J345 | Trailer recognition unit |
| J362 | Immobilizer control unit |
| J364 | Additional heater control unit |
| J386/J387 | Driver/front passenger door control unit |
| J388/J389 | Rear left/right door control unit |
| J400 | Control unit e / motor windshield wipers |
| J412 | Mobile phone control electronics control unit |
| J446 | Parking assistance control unit |
| J492 | All-wheel drive control unit |
| J500 | Power steering control unit |
| J503 | Control block (with display) audio/navigation system |
| J519 | Onboard power supply control unit |
| J527 | Steering column electronics control unit |
| J533 | Data bus diagnostic interface |
| J538 | Fuel pump control unit |
| J543 | Control unit for adjusting the position of the driver's seat and exterior rear-view mirrors |
| J583 | NOx sensor control unit |
| J587 | DSG selector lever sensor control unit |
| J623 | ECM |
| J650 | multimedia system control unit |
| J667/J668 | Left/right headlight power supply |
| J682 | Terminal 50 power supply relay |
| J745 | Control unit for cornering light and headlight range control |
| J757 | Power relay for engine compartment components |
| J791 | Parking pilot control unit |
Designations on "TO" (K/L, indicators)
| TO | instrument cluster | |
| KZ | K/L low pressure motor | oils |
| K28 | K / L overheating and low coolant level | |
| K38 | K/L low engine oil level | |
| K83 | K/L MIL | |
| K105 | Low fuel indicator | |
| K132 | K / L malfunctions of electronic power control |
Designations on "N" - "Q" (e/m valves, injectors, actuators, spark plugs)
| N30-N33 | Cylinder injectors No. 1-4 |
| N70 | Ignition coil #1 with output stage |
| N75 | E/m the valve of regulation of pressure of a turbocharging |
| N80 | E/m valve No. 1 of a purge of an adsorber EVAP |
| N127 | Ignition coil #2 with output stage |
| N205 | Valve No. 1 adjustment of the intake camshaft |
| N249 | Turbocharger Air Recirculation Valve |
| N276 | Fuel pressure control valve |
| N291/N292 | Ignition coil #3/#4 with output stage |
| N316 | Intake manifold damper valve |
| N428 | E/m the valve of regulation of pressure of motive oil |
| R | spark plug connector |
| Q | Spark plug |
Designations on "R" (components of multimedia, navigation and communication systems)
| R12 | Audio system amplifier |
| R78 | TV receiver |
Designations on "S" - "T" (fuses, connectors, pumps)
| SA | Fuse holder A (see above) |
| SAx | Fuses No. x in holder SA (see above) |
| SB | Fuse holder B (see above) |
| SBx | Fuses No. x in holder SB (see above) |
| SC | Fuse holder C (see above) |
| SCx | Fuses No. x in holder SC (see above) |
| T1... | 1-pin connector |
| T2... | 2-pin connector, etc. |
| T16 | 16-pin diagnostic connector |
| V51 | Coolant priming pump after engine shutdown |