| A - | Steering column electronics control unit -J527- | | B - | 14-pin connector -T14- | | | | | Electronic ignition lock -D9- |
| A - | Electronic ignition lock -D9- | | B - | 8-pin connector -T8e- | | C - | 5-pin connector -T5a- | | D - | 8-pin connector -T8d- | | E - | 8-pin connector -T8c- | Note: | T8e connector, only models without ESP | | |
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| 14-pin connector -T14e- , (H3) -A- | | 3 - | Brake pedal switch -F63- , ABS control unit -J104- , Trailer detector control unit -J345- | | 5 - | Engine control unit -J623- | | 6 - | Brake light switch -F- (up to June 2006), brake pedal switch -F63- (up to June 2006), lateral acceleration sender -G200- , longitudinal acceleration sender -G251- , ABS control unit -J104- | | 7 - | Air mass meter -G70- , Engine control unit -J623- | | 8 - | Headlight range control regulator -E102- , Left headlight range control motor -V48- , Right headlight range control motor -V49- | | 9 - | Self-diagnosis connection | | 12 - | Alternator -C- , engine control unit -J623- | | 13 - | Engine control unit -J623- | | 14 - | Engine control unit -J623- | | Single connector -T1ab- , (H2) -B- | | 1 - | Terminal 30 voltage supply | | Single connector -T1ac- , (H4) -C- | | 1 - | Terminal 30 voltage supply | | 18-pin connector -T18f- , (H1) -D- | | 2 - | Fuel system pressurisation pump -G6- | | 3 - | Windscreen wiper motor -V- | | 5 - | Main switch for stop/start system -E101- , gearbox neutral position switch -F365- , oil level and oil temperature sender -G266- , continued coolant circulation relay -J151- , automatic glow period control unit -J179- , charge pressure control solenoid valve -N75- , coolant circuit valve -N214- , fuel metering valve -N290- , exhaust gas recirculation cooler changeover valve -N345- (up to October 2007), lambda probe heater -Z19- | | 6 - | Windscreen wiper motor -V- | | 7 - | Engine control unit -J623- | | 11 - | Fuse 6 on fuse holder B -SB6- | | 12 - | Airbag control unit -J234- | | 13 - | Fuel pressure regulating valve -N276- | | 15 - | Airbag control unit -J234- | | 17 - | Relief relay 2 for terminal 15 -J817- , fuse 1 on fuse holder D -SD1- (vehicle class 3.8 t only), fuse 2 on fuse holder D -SD2- (vehicle class 3.8 t only) | | 18 - | Brake light switch -F- , brake pedal switch -F63- , ABS control unit -J104- | | 15-pin connector -T15- , (C1) -E- | | 2 - | Electronic ignition lock -D9- , ESL control unit -J764- | | 3 - | Glove compartment light switch -E26- , tail lift switch -E629- , cigarette lighter -U1- | | 4 - | Electronic ignition lock -D9- , dash panel insert -K- | | 6 - | Light switch -E1- , centre operating unit for dash panel -J819- | | 7 - | Steering column electronics control unit -J527- | | 8 - | Light switch -E1- , dash panel insert -K- | | 11 - | Heater/heat output switch -E16- | | 15 - | Dash panel insert -K- | | |
| | Onboard supply control unit -J519- |
| 12-pin connector -T12g- , (X7) -A- | | 2 - | Right fog light bulb -L23- | | 3 - | Left main beam bulb -L125- | | 4 - | Right headlight dipped beam bulb -M31- | | 5 - | Left fog light bulb -L22- | | 6 - | Right main beam bulb -L126- | | 7 - | Front passenger side window regulator motor -V148- | | 9 - | Front passenger side window regulator motor -V148- | | 10 - | Left headlight dipped beam bulb -M29- | | 11 - | Right sliding door central locking motor -V58- , left sliding door central locking motor -V95- , Rear wing door central locking motor -V96- , rear right door central locking motor -V97- (double cab only), rear left door central locking motor -V115- (double cab only) | | 12 - | Right sliding door central locking motor -V58- , left sliding door central locking motor -V95- , Rear wing door central locking motor -V96- , rear right door central locking motor -V97- (double cab), rear left door central locking motor -V115- (double cab) | | 52-pin connector -T52- , (X9) -B- | | 1 - | Heated rear window relay -J9- | | 2 - | Heated rear window relay 2 -J868- | | 3 - | Rear left door contact switch for sliding door or side door -F176- | | 4 - | Rear left central locking lock unit -F222- | | 5 - | Turn signal relay for roof mounted turn signals -J436- | | 6 - | Brake pad wear sender | | 9 - | Right side light bulb -M3- | | 12 - | Driver side turn signal repeater bulb in exterior mirror -L131- | | 13 - | Front left turn signal bulb -M5- | | 14 - | Front right window regulator switch -E41- | | 15 - | Brake fluid level warning contact -F34- | | 18 - | Brake fluid level warning contact -F34- | | 19 - | Front right window regulator switch -E41- | | 20 - | Ambient temperature sensor -G17- | | 21 - | Coolant shortage indicator sender -G32- | | 23 - | Left side light bulb -M1- | | 24 - | Front right turn signal bulb -M7- | | 25 - | Front passenger side turn signal repeater bulb in exterior mirror -L132- | | 26 - | Rear window washer pump -V13- | | 27 - | Washer fluid warning contact -F77- | | 28 - | Coolant shortage indicator sender -G32- | | 29 - | Heated windscreen relay -J47- | | 31 - | Windscreen wiper motor -V- | | 32 - | Handbrake warning switch -F9- | | 33 - | Ambient temperature sensor -G17- | | 34 - | Fuel gauge sender -G- | | 36 - | Washer fluid warning contact -F77- | | 38 - | Fuel gauge sender -G- | | 39 - | Headlight washer system relay -J39- | | 40 - | Brake pad wear sender | | 41 - | Rear right door contact switch -F11- (double cab only), rear right central locking lock unit -F223- (panel van / kombi only) | | 42 - | Rear right door contact switch for sliding door or side door -F7- | | 43 - | Front passenger door contact switch -F3- | | 46 - | Alarm system relay 1 -J460- | | 47 - | Battery isolation relay -J7- , relay for special constructions, terminal 61 -J822- | | 48 - | Front passenger seat central locking motor -V57- | | 49 - | Front passenger door contact switch -F3- | | 51 - | Convenience CAN, high | | 52 - | Convenience CAN, low | | 6-pin connector -T6ap- , (X2) -C- | | 1 - | Front left side marker bulb -M33- | | 2 - | Centre left side marker bulb -M39- | | 3 - | Rear left side marker bulb -M37- | | 4 - | Front right side marker bulb -M34- | | 5 - | Centre right side marker bulb -M40- | | 6 - | Rear right side marker bulb -M38- | | 20-pin connector -T20d- , (X3) -D- | | 1 - | Left tail light bulb -M4- | | 2 - | Left brake light bulb -M9- | | 3 - | Rear fog light bulb -L20- | | 4 - | High-level brake light bulb -M25- | | 5 - | Rear right door contact switch -F226- | | 6 - | Rear right central locking switch -F347- | | 8 - | Right end-outline marker lamp bulb -M79- (platform and double cab only) | | 9 - | Left vent window motor -V83- | | 10 - | Left vent window motor -V83- | | 11 - | Right brake light bulb -M10- | | 12 - | Right tail light bulb -M2- | | 13 - | Left end-outline marker lamp bulb -M78- (platform and double cab only), number plate light -X- (panel van / kombi) | | 14 - | Reversing camera system control unit -J772- , left reversing light bulb -M16- , right reversing light bulb -M17- | | 15 - | Rear left turn signal bulb -M6- | | 16 - | Rear right turn signal bulb -M8- | | 17 - | Rear right wing door window wiper motor -V93- | | 18 - | Rear left wing door window wiper motor -V92- | | 19 - | Right vent window motor -V84- | | 20 - | Right vent window motor -V84- | | 18-pin connector -T18g- , (X6) -E- | | 1 - | Roof electronics control unit -J528- , (front interior light) -W1- | | 4 - | Roof electronics control unit -J528- | | 5 - | Elevated side light, front left -M90- | | 6 - | Elevated side light, front right -M91- | | 7 - | Heated rear window in left wing door -Z26- | | 8 - | Interior light relay -J602- | | 11 - | Roof electronics control unit -J528- | | 13 - | Roof electronics control unit -J528- | | 17 - | Heated rear window in right wing door -Z27- | | 24-pin connector -T24- , (X1) -F- | | 2 - | Switch illumination terminal 58d | | 5 - | Electronic ignition lock -D9- | | 6 - | Electronic ignition lock -D9- | | 8 - | Interior illumination switch -E599- , Interior light with switch-off delay -W15- | | 12 - | Interior illumination switch -E599- , Interior light with switch-off delay -W15- | | 13 - | Fog light switch -E7- | | 22 - | Reversing light switch -F4- | | |