Table of contents: The most important terminals ↓ Designations of cross-section and… ↓ Color coding of compact fuses ↓ Color coding of maxi fuses ↓ Designations on diagrams ↓
Note: Due to the wide range of configuration options for the vehicles in question, only the wiring diagrams for the basic equipment of models from 06.2008 are provided below.
The most important terminals
Terminal 15 - (Ignition switch "ON" position) Receives power only when the ignition is on, and in addition to the ignition/injection system, it supplies current to those electrical consumers that should receive current only during vehicle operation. The wires to terminals 15 in most cases have green insulation, sometimes with an additional colored stripe.
Terminal 30 - Receives direct current from the battery positive or from the generator when the engine is running. These wires, which are always energized, are in most cases red in color, sometimes with additional colored stripes.
Terminal 31 - ("-" battery) Leads to ground. The wires are usually black.
Terminal 49 - Refers to the system of intermittent and emergency light signals.
Terminal 53 - This supplies voltage to the windshield wipers.
Terminal 56 - Through it, voltage is supplied to the low beam lamps via the yellow and yellow-black wires, as well as to the high beam lamps via the white and white-black wires. Terminals 58 supply voltage to the parking lights and license plate lighting. The main color of the wire sheath is gray, sometimes with an additional color stripe.
Terminal 75 - Ignition switch terminal, receives voltage when the ignition key is in the "Start" position.
Terminal X - Energized when the ignition key is turned from the "LOCK" position to the "OFF" position and de-energized when the key is turned to the "START" position.
Designations of cross-section and color of wire insulation
The wire designation on the diagrams consists of three parts and has the form 1.5 bl/gn.
The first part (1.5) indicates the cross-section of the wire (mm²); the second/third parts (bl/gn) mean the main color/color of the wire insulation stripe:
- ws - white
- sw - black
- ro - red
- br - brown
- gn - green
- bl - blue
- gr - gray
- li - purple
- ge - yellow
- or - orange
- rs - pink
Color coding of compact fuses
- 3A - purple
- 5A - beige or light brown
- 7.5A - brown
- 10A - red
- 15A - blue
- 20A - yellow
- 25A - white or transparent
- Z0A - green
- 35A - green-blue
- 40A - orange
- 50A - red
Color coding of maxi fuses
- 30A - orange
- 40A - green
- 50A - red
- 60A - yellow
- 70A - brown
- 80A - white
- 100A - blue
- 125A - pink
- 150A - gray
- 200A - purple
Designations on diagrams
CAN bus wire
Numerical designations (points and connections of mass)
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).
| 35 | Ground point, under the front passenger seat |
| 43 | Mass point, at the bottom of the right A-pillar |
| 44 | Mass point, at the bottom of the left A-pillar |
| 45 | Ground point, in the center behind the instrument panel |
| 51 | Ground point, on the right side of the luggage compartment |
| 53 | Ground point, on the right side of the tailgate |
| 82 | Ground connection #1, in the front left wiring harness |
| 98 | Ground connection in the tailgate wiring harness |
| 205 | Ground connection in the front left door wiring harness |
| 206 | Ground connection in the front right door wiring harness |
| 218 | Ground connection #1, in the tailgate wiring harness |
| 219 | Ground connection #2, in the tailgate wiring harness |
| 261 | Ground connection in heated windshield washer nozzle wiring harness |
| 366-400 | Ground connection #1-#35, in the main wiring harness |
| 410 | Mass connection #1 (sensor mass), in the main wiring harness |
| 456/457 | Ground connection #1/#2, in the front bumper wiring harness |
| 608 | The mass point is in the center of the air intake chamber |
| 624 | Ground point, starter battery |
| 640 | Ground point #2, left in the engine compartment |
| 644 | Ground point, on the right side of the engine compartment |
| 658 | Ground point #2, on the left side near the rear window |
| 664 | Ground point, left under the instrument panel |
| 667 | Ground point, on the rear left side of the roof |
| 668 | Mass point #2, on the left D-pillar |
| 687 | Mass point #1 on the central tunnel |
Designations on "A-B" (battery, starter, connections)
Note: Connections B163, B165, B177 and B492 are located in the passenger compartment wiring harness. The remaining connections listed are located in the main wiring harness.
| A | Battery |
| IN | Starter |
| B108/B109 | Compound 1 (additional CAN bus high/low) |
| B163/B165 | Positive connection #1/#2 (15) |
| B177 | Connection(61) |
| B272/B273 | Positive connection (30/15) |
| B277-B283 | Positive connection No. 1-No. 7 (15a) |
| B298-B309 | Positive connection 2-13 (30) |
| B315-B327 | Positive connection No. 1-No. 13 (30a) |
| B335-B337 | Compound 1-3 (54) |
| B340-B342 | Compound 1-3 (58s) |
| B346 | Compound 1 (75) |
| B350-B353 | Connection 1-4 (87a) |
| B397-B401 | Connection No. 1-No. 5 (cAN-C bus, high) |
| B406-B410 | Connection No. 1-No. 5 (cAN-C bus, low) |
| B427/B428 | Connection No. 1/No. 2 (mirror signal) |
| B444 | Compound 1 (diagnostics) |
| B465-B490 | Connection No. 1-No. 26 |
| B492 | Positive connection #3 (15) |
| B520 | RL connection |
Designations "C" - "E" (generator, interference filter, coils, switches, connections)
| WITH | Generator |
| C18 | Glass antenna interference suppression filter |
| C24 | Noise suppression filter |
| C53 | Positive connection (x) in the washer fluid nozzle heater wiring harness |
| C56 | Connection (87) in the front left wiring harness |
| C65/C66 | Positive connection #1/#2 of the parking light |
| D50 | Positive connection (30), in the engine compartment wiring harness |
| D51 | Positive connection 1 (15), in the engine compartment wiring harness |
| E1 | External lighting and instrument lighting control switch |
| E2 | Turn signal switch |
| E5 | High beam headlight switch |
| E6 | Rear interior light switch |
| E7 | Fog light switch |
| E18 | Rear fog light switch |
| E22 | Windscreen wiper interval control |
| E26 | Glove compartment light switch |
| E45 | Tempostat control switch |
| E102 | Headlight leveling adjuster |
| E139 | Sunroof control switch |
| E167 | Steering column adjustment switch |
| E229 | Hazard warning switch |
| E256 | ESP/TCS switch |
| E266 | Parking assistance switch |
| E316 | Glove compartment button |
| E326 | Front interior light switch |
| E380 | Entertainment system control unit |
| E408/E415 | Keyless entry switch/keypad |
| E453 | Rear left interior light switch |
| E457/E458 | Left/Right Front Reading Light Switch |
| E461 | Control unit in the front overhead console |
| E493 | Instrument cluster control keys |
| E506 | Display key |
Designations with "F" (sensors, sensor switches)
| F | D/W brake lights |
| F1 | Engine oil pressure sensor |
| F4 | D/W reversing lights |
| F34 | Low brake fluid level warning light |
| F36 | Clutch pedal position sensor |
| F47 | Brake pedal position sensor |
| F125 | Multifunctional switch |
| F147/F148 | Driver/Passenger Vanity Mirror Light Switch |
| F266 | Hood contact switch |
| F305 | Selector lever position sensor "P" |
| F321 | D/V of the armed parking brake |
| F350 | Coil connector |
Designations with "G" and "H" (sensors, fuel pump, sound signals)
| G | Fuel gauge sensor |
| G1 | Fuel gauge |
| G6 | Fuel supply system filling pump |
| G17 | Outside air temperature sensor |
| G23 | Fuel pump |
| G32 | Low coolant level warning light |
| G33 | Low washer fluid level warning light |
| G34/G35 | Front left/right brake pad wear sensor |
| G36/G37 | Rear left/right brake pad wear sensor |
| G85 | Steering wheel angle sensor |
| G106 | Outside air temperature gauge |
| G169 | Fuel gauge sensor #2 |
| G266 | Engine oil level and temperature sensor |
| G397 | Rain and light sensor |
| G525/G256 | Sensor No. 1/No. 2 of the closed position of the tailgate |
| N | Horn plate |
| H2 | High frequency horn |
| H7 | Low frequency horn |
Designations with "J" (electronic control units, relays)
| J4 | 2-tone horn relay |
| J9 | Rear window heating relay |
| J39 | Headlight washer relay |
| J53 | Starter relay |
| J104 | ABS control unit |
| J217 | AT transmission control unit |
| J234 | SRS control unit |
| J245 | Control unit for the upper hatch cover drive |
| J271 | Motronic ECM Power Relay (main relay) |
| J285 | Control unit in the instrument cluster |
| J329 | Power supply relay terminal 15 |
| J367 | Battery Monitoring Control Unit |
| J386/J387 | Driver/Front Passenger Door Control Unit |
| J393 | Central control unit for comfort systems |
| J400 | Windshield wiper motor control unit |
| J428 | Adaptive Cruise Control Unit (ACC) |
| J446 | Parking assistance system control unit |
| J489 | Radio time signal receiver |
| J508 | Brake light prohibition relay |
| J518 | Keyless entry control unit |
| J519 | On-board power supply control unit |
| J520 | Control unit No. 2 for on-board power supply |
| J523 | Front display control unit and information system control panel |
| J527 | Steering column electronic control unit |
| J533 | Diagnostic interface of data transmission buses |
| J587 | Control unit for the sensors of the AT mode selector lever |
| J623 | ECM |
| J694 | Power supply relay terminal 75x |
| J695 | Starter relay No. 2 |
| J723 | Keyless entry system reader unit |
| J773 | Central control unit No. 2 for comfort systems |
Designations starting with "K" (K/L and indicators)
| KZ | Low pressure engine oil control valve |
| K4 | Parking light indicator |
| KB | Emergency signaling key |
| K13 | Rear fog light indicator |
| K17 | Fog light indicator |
| K28 | K/L overheating and low coolant level |
| K32 | Brake pad wear indicator |
| K118 | K/L brake system |
| K136 | Parking assistance system indicator |
| K139 | Parking brake control |
| K145 | Front passenger airbag deactivation key |
Designations on "LM" (lamps)
| L9 | Light switch illumination lamp |
| L15 | Ashtray light |
| L22/L23 | Left/right fog light bulb |
| L28 | Cigarette lighter illumination lamp |
| L42 | Socket illumination lamp |
| L46/L47 | Left/Right Rear Fog Light Bulb |
| L65 | Sunroof control switch illumination lamp |
| L121 | Cup holder light |
| L131/L132 | Left/right outside mirror turn signal repeater lamp |
| L156 | Switch illumination lamp |
| L174/L175 | Left/right DRL lamp |
| M1 | Left front parking light bulb |
| M2 | Right rear side light bulb |
| M3 | Right front parking light bulb |
| M4 | Left rear side light bulb |
| M5/M6 | Front/Rear Left Turn Signal Lamp |
| M7/M8 | Front/Rear Right Turn Signal Lamp |
| M9/M10 | Left/right brake light bulb |
| M16/M17 | Left/right reverse light bulb |
| M18/M19 | Left/right turn signal repeater lamp |
| M25 | High level brake light lamp |
| M29/M30 | Left headlight low/high beam lamp |
| M31/M32 | Right headlight low/high beam lamp |
| M33/M34 | Left/right front side light bulb |
| M37/M38 | Left/right rear side light bulb |
Designations with "N" - "S" (electromagnetic valves, squibs, connections)
| N119 | Power steering solenoid valve "Servotronic" |
| N253 | Battery emergency shut-off pyropatron |
| Q22 | Connection #1 in the tailgate wiring harness |
| R113 | Antenna amplifier #4 |
Designations with "S" - "U" (fuses, connectors, sockets)
| S30 | Rear window wiper fuse |
| S41 | Rear window defroster fuse |
| S51 | Fuse |
| S123 | ABS control unit fuse #1 |
| S131-S133 | Fuse No. 1-No. 3 |
| SB | Fuse holder B (behind the left end panel of the instrument panel) |
| SBx | Fuses No. x in holder SB |
| SC | Fuse holder C (behind the right end panel of the instrument panel) |
| SCx | Fuses No. x in holder SC |
| SD | Relay and fuse holder D (under the driver's seat) |
| SDx | Fuses No. x in SD holder |
| SF | Fuse holder F (behind the right trim panel of the luggage compartment) |
| SFx | Fuses No. x in the SF holder |
| T1... | 1-pin connector; |
| T2... | 2-pin connector; etc. |
| T16 | 16-pin diagnostic connector |
| TV22 | Twisting No. 2 wires of terminal 30 |
| U1 | Cigarette lighter |
| U6 | 12 volt socket |
| U18-U19 | 12 V socket No. 2-No. 4 |
| U26 | 12V socket No. 5 |
Designations with "V" (electric motors, pumps)
| V | Windshield wiper motor |
| V11 | Headlight washer fluid supply pump |
| V12 | Rear window wiper motor |
| V48/V49 | Left/right headlight tilt adjustment electric motor |
| V59 | Windshield and rear window washer fluid supply pump |
| V1 55 | Fuel tank filler neck locking motor |
| V327 | Glove compartment release actuator |
Designations on "W" and "X" (lamps)
| W6 | Lamp in the glove compartment |
| W9/W10 | Left/right footwell lighting |
| W13 | Reading lamp for front passenger |
| W14 | Front passenger vanity mirror light |
| W16/W17 | Left/right interior light |
| W18 | Light in the luggage compartment, left |
| W19 | Reading lamp for the driver |
| W20 | Driver's vanity mirror light |
| W35 | Right light in the luggage compartment |
| W43 | Rear interior light |
| W45/W46 | Rear left/right footwell lighting |
| W47/W48 | Rear left/right interior light, on the ceiling |
| W49/W50 | Rear left/right vanity mirror illumination |
| W51 | Light in the trunk lid |
| X | License plate light |
Designations for "Y" and "Z" (clock, mirror, display, heating elements)
| Y7 | Auto-dimming rearview mirror |
| Y8 | Radio-set clock |
| Y24 | Display in the instrument panel |
| Z1 | Rear window heating |
| Z5 | Connection in the heated glass wiring harness |
| Z6 | Positive connection (x) in the heated glass wiring harness |
| Z7 | Connection #2 in the heated glass wiring harness |
| Z20/Z21 | Heated left/right windshield washer nozzle |