| 1 | - | T6o/50 | | 2 | - | T6o/15 | | 3 | - | T6o/30 | | 4 | - | T6o/86s | | 5 | - | T6o/30 | | 6 | - | T6o/75 |
| At the steering column -arrow-. | | |
|
| A | - | Left steering column switch -EX19- / Right steering column switch -EX20- / Coil -F350- | | B | - | 41-pin connector, at wiring harness - T41a |
| At the right dash panel, -arrow B-. | | |
| | A | - | Headlight range control adjuster -E102- | | B | - | 8-pin connector, at wiring harness - T8b |
| At the right dash panel, -arrow A-. | | |
| | A | - | Light switch -E1- | | B | - | 17-pin connector, at wiring harness - T17a |
| Control unit in dash panel insert -J285- / Immobilizer control unit -J362- |
| A | - | Control unit in dash panel insert -J285- / Immobilizer control unit -J362- | | B | - | 32-pin connector, at wiring harness - T32a |
| 32-pin connector -T32a- : | | 1 | - | Fuel gauge sender -G- | | 2 | - | Fuel gauge sender -G- | | 3 | - | not assigned | | 4 | - | not assigned | | 5 | - | not assigned | | 6 | - | not assigned | | 7 | - | Immobilizer reading coil -D2- | | 8 | - | Immobilizer reading coil -D2- | | 9 | - | Speed signal - Ouput | | 10 | - | Speedometer sender -G22- | | 11 | - | Oil level and oil temperature sender -G266- | | 12 | - | not assigned | | 13 | - | Rear fog light warning light -K13- | | 14 | - | Main beam warning light -K1- | | 15 | - | not assigned | | 16 | - | Terminal 31 - Input | | 17 | - | Windscreen washer fluid level sender -G33- | | 18 | - | Coolant shortage indicator sender -G32- | | 19 | - | Ambient temperature sensor -G17- | | 20 | - | Terminal 31 (sender mass) - Output | | 21 | - | Multi-function display -J119- | | | - | Function selection switch -E91- | | 22 | - | Multi-function display -J119- | | | - | Function selection switch -E91- | | 23 | - | Multi-function display -J119- | | | - | Reset button -E92- | | 24 | - | not assigned | | 25 | - | Handbrake warning switch -F9- | | 26 | - | Brake fluid level warning contact -F34- | | 27 | - | Oil pressure switch -F1- | | 28 | - | Drive train CAN bus, high | | 29 | - | Drive train CAN bus, low | | 30 | - | Fog light warning light -K17- | | 31 | - | Terminal 15 - Input | | 32 | - | Terminal 30 - Input |
| Warning light control in dash panel insert - K, as of August 2011 | | Warning light | Signal source | | Main beam warning light -K1- | T32a/14 | | Alternator warning light -K2- | CAN bus Onboard control unit -J519- | | Oil pressure warning light -K3- | T32a/27 | | Brake system warning light -K118- | T32a/26, CAN bus ABS control unit -J104- | | Handbrake warning light -K14- | T32a/25 | | Rear fog light warning light -K13- | T32a/13 | | Fog light warning light -K17- | T32a/30 | | Seat belt warning light -K19- | CAN bus Airbag control unit -J234- | | Coolant temperature and coolant shortage indicator warning light -K28- | T32a/18, CAN bus engine control unit -J623- | | Glow period warning light -K29- | CAN bus Engine control unit -J623- | | Oil level warning light -K38- | T32a/11 | | ABS warning light -K47- | CAN bus ABS control unit -J104- | | Dipped beam and rear lights warning light -K60- | CAN bus Onboard control unit -J519- | | CCS warning light -K31- | CAN bus Onboard control unit -J519- | | Left turn signal warning light -K65- | CAN bus Onboard control unit -J519- | | Airbag warning light -K75- | CAN bus Airbag control unit -J234- | | Exhaust emissions warning lamp -K83- | CAN bus Engine control unit -J623- | | Electro/mechanical power steering warning light -K161- | CAN bus Onboard control unit -J519- | | Right turn signal warning light -K94- | CAN bus Onboard control unit -J519- | | Fuel reserve warning light -K105- | T32a/1, T32a/2 | | Washer fluid low warning light -K106- | T32a/17 | | Rear lid open warning light -K116- | CAN bus Onboard control unit -J519- | | Electronic power control fault lamp -K132- | CAN bus Engine control unit -J623- | | Door open warning light -K166- | CAN bus Onboard control unit -J519- | | Selector lever lock warning light -K169- | CAN bus Automatic gearbox control unit -J217- , Double clutch gearbox mechatronics -J743- | | Bonnet open warning light -K171- | CAN bus Onboard control unit -J519- | | Warning light for tyre pressure display -K220- | CAN bus ABS control unit -J104- | | Diesel particle filter warning light -K231- | CAN bus Engine control unit -J623- | | Bulb failure warning light -K170- | CAN bus Onboard control unit -J519- | | Warning light for engine cold -K249- | CAN bus Engine control unit -J623- |
| Display control in dash panel insert K | | Display | Signal source | | Fuel gauge -G1- | T32a/1, T32a/2 | | Coolant temperature gauge -G3- | CAN bus Engine control unit -J623- | | Rev. counter -G5- | CAN bus Engine control unit -J623- | | Speedometer -G21- | T32a/10, CAN bus ABS control unit -J104- | | Buzzer and gong -H3- | CAN bus Control unit in dash panel insert -J285- | | Digital clock -Y2- | CAN bus Control unit in dash panel insert -J285- | | Odometer display -Y4- | CAN bus Control unit in dash panel insert -J285- | | Multi-function display -J119- | T32a/19, 21, 22, 23, CAN bus Engine control unit -J623- , Control unit in dash panel insert -J285- | | Selector lever position indicator -Y6- | CAN bus Automatic gearbox control unit -J217- , Double clutch gearbox mechatronics -J743- |
| Onboard control unit - J519 | | | |
| A | - | 73-pin connector (black) - T73a | | B | - | 73-pin connector (white) - T73b |
| 73-pin connector -T73a- (black): | | 1 | - | not assigned | | 2 | - | not assigned | | 3 | - | not assigned | | 4 | - | Output for Interior light (31) | | 5 | - | not assigned | | 6 | - | not assigned | | 7 | - | Input of light switch -E1- (fog lights) | | 8 | - | not assigned | | 9 | - | not assigned | | 10 | - | Output for central locking motor in rear lid -V53- | | 11 | - | Output for central locking motor in driver door -V56- , central locking motor in front passenger door -V57- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215- | | | | 12 | - | Output for central locking motor in driver door -V56- , motor for SAFE function of central locking in driver door -V161- | | 13 | - | Output for motor for SAFE function of central locking in driver door -V161- , motor for SAFE function of central locking in front passenger door -V162- , motor for SAFE function of central locking in rear left door -V163- , motor for SAFE function of central locking in rear right door -V164- | | 14 | - | Input (31) - for central locking | | 15 | - | Output for central locking motor in front passenger door -V57- , motor for SAFE function of central locking in front passenger door -V162- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215- | | 16 | - | Input (30) - for central locking | | 17 | - | Input of central locking lock unit, rear left -F222- | | 18 | - | Input of central locking lock unit, rear right -F223- | | 19 | - | Input of door contact switch, driver side -F2- (31) | | 20 | - | Input of door contact switch, front passenger side -F3- (31) | | 21 | - | Input of central locking lock unit, front passenger side -F221- | | 22 | - | Input of central locking lock unit, driver side -F220- | | 23 | - | Input of rear lid remote release button -E233- , rear lid handle release button -E234- (31) (on vehicles without central locking) | | 24 | - | Input of central locking lock unit, driver side -F220- , central locking lock unit, front passenger side -F221- | | 25 | - | Input of interior locking switch, driver side -E150- | | 26 | - | Input of door contact switch, rear right -F11- | | 27 | - | Input of bonnet contact switch -F266- (31) | | 28 | - | Input of hazard warning light button -E229- (31) | | 29 | - | Input of horn activation -H- (31) | | 30 | - | Input of rear lid lock unit -F256- (31) | | 31 | - | not assigned | | 32 | - | Input of turn signal switch -E2- (right turn signal) (31) | | 33 | - | Input of turn signal switch -E2- (left turn signal) (31) | | 34 | - | Input of door contact switch, rear left -F10- | | 35 | - | not assigned | | 36 | - | not assigned | | 37 | - | not assigned | | 38 | - | Output for heated exterior mirror, driver side, heated exterior mirror, front passenger side | | 39 | - | Input (31) | | 40 | - | not assigned | | 41 | - | not assigned | | 42 | - | Input of ignition starter switch -D- (86s) | | 43 | - | Input of brake light switch -F- (54) | | 44 | - | Input of ignition starter switch -D- (15) | | 45 | - | Input of light switch -E1- (58R) | | 46 | - | not assigned | | 47 | - | not assigned | | 48 | - | not assigned | | 49 | - | not assigned | | 50 | - | not assigned | | 51 | - | not assigned | | 52 | - | Output for fuel supply relay -J643- (31) | | 53 | - | not assigned | | 54 | - | not assigned | | 55 | - | not assigned | | 56 | - | Output for hazard warning light system warning light -K6- + bulb for button illumination -L76- | | 57 | - | not assigned | | 58 | - | Output for warning light for SAFE function of central locking -K133- | | 59 | - | Output for interior locking warning light, driver side -K174- | | 60 | - | Output for heated rear window warning light -K10- | | 61 | - | not assigned | | 62 | - | not assigned | | 63 | - | not assigned | | 64 | - | Input for heated exterior mirror driver's side -Z4- , heated exterior mirror front passenger's side -Z5- | | 65 | - | Output for front interior light -W1- , glove box light -W6- (30g) | | 66 | - | Input for front interior light -W1- , glove box light -W6- (30) | | 67 | - | not assigned | | 68 | - | Input for windscreen wiper motor -V- (30) | | 69 | - | Output for windscreen wiper motor -V- (1st stage) | | 70 | - | Input (31) | | 71 | - | Output for windscreen wiper motor -V- (2nd stage) | | 72 | - | Output for high tone horn -H2- , low tone horn -H7- | | 73 | - | Input (30) for high tone horn -H2- , low tone horn -H7- |
| 73-pin connector -T73b- (white): | | 1 | - | not assigned | | 2 | - | not assigned | | 3 | - | not assigned | | 4 | - | not assigned | | 5 | - | not assigned | | 6 | - | not assigned | | 7 | - | not assigned | | 8 | - | not assigned | | 9 | - | not assigned | | 10 | - | not assigned | | 11 | - | Input for reversing light bulb, left -M16- , reversing light bulb, right -M17- , static cornering light, left -M51- , static cornering light, right -M52- | | | | 12 | - | not assigned | | 13 | - | Input for turn signal (30) | | 14 | - | Output for turn signal bulb, front left -M5- , turn signal bulb, rear left -M6- , side turn signal bulb, left -M18- | | 15 | - | Output for turn signal bulb, front right -M7- , turn signal bulb, rear right -M8- , side turn signal bulb, right -M19- | | 16 | - | Output for brake light bulb, left -M9- , brake light bulb, right -M10- (54) | | 17 | - | LIN bus door control unit driver's side -J386- , door control unit front passenger's side -J387- , rear left door control unit -J388- , rear right door control unit -J389- | | 18 | - | Drive train CAN bus, low | | 19 | - | Drive train CAN bus, high | | 20 | - | Convenience CAN bus, high | | 21 | - | Convenience CAN bus, low | | 22 | - | Drive train CAN bus low (switched) | | 23 | - | Drive train CAN bus high (switched) | | 24 | - | not assigned | | 25 | - | not assigned | | 26 | - | not assigned | | 27 | - | Input of intermittent wiper switch -E22- (1st stage) | | 28 | - | not assigned | | 29 | - | not assigned | | 30 | - | not assigned | | 31 | - | Input of heated rear window button -E230- (31) | | 32 | - | Input of windscreen wiper motor -V- | | 33 | - | not assigned | | 34 | - | Input of light switch -E1- (58L) | | 35 | - | not assigned | | 36 | - | not assigned | | 37 | - | Diagnosis wire K | | 38 | - | Input (31) | | 39 | - | Input (30) | | 40 | - | not assigned | | 41 | - | not assigned | | 42 | - | not assigned | | 43 | - | not assigned | | 44 | - | not assigned | | 45 | - | not assigned | | 46 | - | not assigned | | 47 | - | not assigned | | 48 | - | Input of reversing light switch -F4- (not valid for vehicles with automatic gearbox) | | 49 | - | Input of alternator with voltage regulator -CX1- terminal L | | 50 | - | Input of ignition starter switch -D- (50) | | 51 | - | Input of ignition starter switch -D- (75) | | 52 | - | Input of light switch -E1- (for headlight washer system) | | 53 | - | Input of intermittent wiper switch -E22- (2nd stage) | | 54 | - | not assigned | | 55 | - | not assigned | | 56 | - | not assigned | | 57 | - | not assigned | | 58 | - | Input of exterior mirror heating button | | 59 | - | Input of fuse in fuse holder A on the battery (30 analogue) | | 60 | - | Input (31 analog) | | 61 | - | Input of rear wiper switch -E34- | | | - | Output for rear window wiper motor -V12- | | 62 | - | Input of intermittent wiper control -E38- | | 63 | - | Output for heated rear window -Z1- | | 64 | - | not assigned | | 65 | - | not assigned | | 66 | - | not assigned | | 67 | - | Input for heated rear window -Z1- (30) | | 68 | - | not assigned | | 69 | - | not assigned | | 70 | - | not assigned | | 71 | - | not assigned | | 72 | - | not assigned | | 73 | - | not assigned |
| At the front wall, left -arrow-. | | |
| | 52-pin + 28-pin assignment: |
| A | - | Engine control unit -J623- | | B | - | 28-pin connector, at wiring harness - T28c | | C | - | 52-pin connector, at wiring harness - T52a |
| 94-pin + 60-pin assignment: |
| A | - | Engine control unit -J623- | | B | - | 94-pin connector, at wiring harness - T94a | | C | - | 60-pin connector, at wiring harness - T60a |
| Below the right dash panel, -arrow-. | | |
| | Power output module for left headlight -J667- |
| A | - | Power output module for left headlight -J667- | | B | - | 10-pin connector, at wiring harness - T10a |
| In engine compartment, front left -arrow-. | | |
|
| A | - | Radiator fan control unit -J293- | | B | - | 10-pin connector, at wiring harness - T10g |
| At the battery cover -1-. | 
| |
| | A | - | 4-pin connector, at wiring harness - T4k |
| On the exhaust manifold -arrow-. | Note | The fitting location of the lambda probe can differ depending on the engine type. | | |
| | A | - | 4-pin connector, at wiring harness - T4j | | B | - | 6-pin connector, at wiring harness - T6aj |
| Power output module for right headlight -J668- |
| A | - | Power output module for right headlight -J668- | | B | - | 10-pin connector, at wiring harness - T10b |
| On bulkhead in engine compartment, left -arrow-. | | |
| | 1 | - | Terminal 30 | | 2 | - | not assigned | | 3 | - | not assigned | | 4 | - | not assigned | | 5 | - | not assigned | | 6 | - | Front right speed sensor -G45- | | 7 | - | Terminal 30 | | 8 | - | not assigned | | 9 | - | not assigned | | 10 | - | not assigned | | 11 | - | not assigned | | 12 | - | not assigned | | 13 | - | Earth | | 14 | - | Drive train CAN bus, low | | 15 | - | not assigned | | 16 | - | not assigned | | 17 | - | not assigned | | 18 | - | Front right speed sensor -G45- | | 19 | - | Rear right speed sensor -G44- | | 20 | - | Rear left speed sensor -G46- | | 21 | - | not assigned | | 22 | - | Front left speed sensor -G47- | | 23 | - | not assigned | | 24 | - | not assigned | | 25 | - | Terminal 30 | | 26 | - | Drive train CAN bus, high | | 27 | - | not assigned | | 28 | - | not assigned | | 29 | - | not assigned | | 30 | - | Brake light switch -F- | | 31 | - | Rear right speed sensor -G44- | | 32 | - | not assigned | | 33 | - | Rear left speed sensor -G46- | | 34 | - | Front left speed sensor -G47- | | 35 | - | Terminal 15 | | 36 | - | not assigned | | 37 | - | not assigned | | 38 | - | Earth |
| Below the front centre console -arrow-. | | |
|
| A | - | Airbag control unit -J234- | | B | - | 50-pin connector, at wiring harness - T50a |
| Pin assignment: Air conditioning system control unit -J301- |
| A | - | Air conditioning system control unit -J301- | | B | - | 18-pin connector, at wiring harness - T18c | | C | - | 16-pin connector, at wiring harness - T16e | | D | - | 5-pin connector, at wiring harness - T5h |
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