A | Battery |
B | Starter |
C | Alternator |
C1 | Voltage regulator |
SA1 | Fuse -1- (30), in the E box |
T2t | 2-pin connector, in engine compartment, front left (on vehicles with heating) |
T4n | 4-pin connector, in engine compartment, front left (on vehicles with Climatic / Climatronic) |
T8a | 8-pin connector, on the onboard power supply control unit (black) |
1 | Earth strap, battery body |
12 | Earth point, on left in engine compartment (at longitudinal member) |
14 | Earth point, on gearbox |
* | on vehicles with alternator 90A / 110A |
** | on vehicles with alternator 140A |
SC13 | Fuse -13-, in fuse holder |
SC27 | Fuse -27-, in fuse holder |
SC29 | Fuse -29-, in fuse holder |
SC30 | Fuse -30-, in fuse holder |
SC31 | Fuse -31-, in fuse holder |
A20 | Positive connection -1- (15a), in dash panel wiring harness |
B281 | Positive connection -5- (15a), in interior wiring harness |
B315 | Positive connection -1- (30a), in interior wiring harness |
J682 | Terminal 50 voltage supply relay, at additional relay holder below dash panel |
SC1 | Fuse -1-, in fuse holder |
SC4 | Fuse -4-, in fuse holder |
T8a | 8-pin connector, on the onboard power supply control unit (black) |
T11a | 11-pin connector, on the onboard power supply control unit (black) |
374 | Earth connection -9-, in interior wiring harness |
A20 | Positive connection -1- (15a), in dash panel wiring harness |
B239 | Positive connection -1- (50), in interior wiring harness |
B279 | Positive connection -3- (15a), in interior wiring harness |
B280 | Positive connection -4- (15a), in interior wiring harness |
* | only on vehicles with extended servicing intervals (ESI) |
G31 | Charge air pressure sender |
G42 | Intake air temperature sender |
G79 | Accelerator pedal position sender |
G185 | Accelerator pedal position sender -2- |
J248 | Diesel direct injection system control unit |
T4o | 4-pin connector, at charge air pressure sender and intake air temperature sender |
T6l | 6-pin connector, at accelerator pedal position sender |
T14a | 14-pin connector, on front left in engine compartment (black) |
T94a | 94-pin connector, at engine control unit |
G28 | Engine speed sender |
G40 | Camshaft position sender |
G62 | Coolant temperature sender |
G83 | Coolant temperature sender at radiator outlet |
J248 | Diesel direct injection system control unit |
J293 | Radiator fan control unit |
T3l | 3-pin connector, at engine speed sender |
T3m | 3-pin connector, at camshaft position sender |
T4p | 4-pin connector, in the holder on the left radiator |
T60a | 60-pin connector, at engine control unit |
T94a | 94-pin connector, at engine control unit |
G81 | Fuel temperature sender |
J248 | Diesel direct injection system control unit |
N240 | Unit injector valve, cylinder 1 |
N241 | Unit injector valve, cylinder 2 |
N242 | Unit injector valve, cylinder 3 |
N243 | Unit injector valve, cylinder 4 |
T10n | 10-pin connector, at cylinder head |
T60a | 60-pin connector, at engine control unit |
F25 | Connection (earth), in engine wiring harness |
F26 | Connection (earth), in cylinder head wiring harness |
G70 | Air mass meter |
J248 | Diesel direct injection system control unit |
N18 | Exhaust gas recirculation valve |
N75 | Charge pressure control solenoid valve |
N345 | Exhaust gas recirculation cooler change-over valve |
T5h | 5-pin connector, at air mass meter |
T6m | 6-pin connector, at valve block |
T14b | 14-pin connector, on left wheel housing in engine compartment (black) |
T60a | 60-pin connector, at engine control unit |
T94a | 94-pin connector, at engine control unit |
D102 | Connection (87a), in engine compartment wiring harness |
J248 | Diesel direct injection system control unit |
N79 | Heating resistor for crankcase ventilation |
T4x | 4-pin connector, at intake manifold flap motor |
T14a | 14-pin connector, on front left in engine compartment (black) |
T60a | 60-pin connector, at engine control unit |
V157 | Intake manifold flap motor |
281 | Earth connection -1-, in engine wiring harness |
673 | Earth point -3-, on left in engine compartment (at longitudinal member) |
* | only on vehicles with optional equipment |
F | Brake light switch |
F47 | Brake pedal switch |
G476 | Clutch position sender |
J248 | Diesel direct injection system control unit |
J527 | Steering column electronics control unit |
T4c | 4-pin connector, at brake pedal switch |
T5j | 5-pin connector, at clutch position sender |
T16a | 16-pin connector, on the onboard power supply control unit (black) |
T20a | 20-pin connector, at steering column electronics control unit |
T94a | 94-pin connector, at engine control unit |
372 | Earth connection -7-, in interior wiring harness |
374 | Earth connection -9-, in interior wiring harness |
A18 | Connection (54), in dash panel wiring harness |
B317 | Positive connection -3- (30a), in interior wiring harness |
B350 | Positive connection -1- (87a), in interior wiring harness |
* | not valid for vehicles with automatic gearbox Gearbox |
G3 | Coolant temperature gauge |
J248 | Diesel direct injection system control unit |
J285 | Control unit in dash panel insert |
J533 | Data bus diagnostic interface, below dash panel, centre |
K | Dash panel insert |
K28 | Coolant temperature and coolant shortage indicator warning lamp |
T16b | 16-pin connector, for diagnostic connection, below dash panel, left |
T20c | 20-pin connector, at data bus diagnostic interface |
T36a | 36-pin connector, at dash panel insert |
T94a | 94-pin connector, at engine control unit |
A76 | Connection (diagnosis wire K), in dash panel wiring harness |
B383 | Connection -1- (CAN H, drive), in interior wiring harness |
B390 | Connection -1- (CAN L, drive), in interior wiring harness |
F1 | Oil pressure switch |
G1 | Fuel gauge |
G5 | Rev. Counter |
G21 | Speedometer |
G266 | Oil level/oil temperature sender |
J285 | Control unit in dash panel insert |
K | Dash panel insert |
K3 | Oil pressure warning lamp |
K29 | Glow period warning lamp |
K38 | Oil level warning lamp |
K83 | Exhaust emissions warning lamp |
K105 | Fuel reserve warning lamp |
T6j | 6-pin connector, on front left in engine compartment (black) |
T14a | 14-pin connector, on front left in engine compartment (black) |
T36a | 36-pin connector, at dash panel insert |
269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
374 | Earth connection -9-, in interior wiring harness |
* | only on vehicles with extended servicing intervals (ESI) |