| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J207 | Starter inhibitor relay |
| T1c | 1-pin connector, black |
| T2 | 2-pin connector, black, on right on engine block |
| T9 | 9-pin connector, on starter inhibitor relay |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T10d | 10-pin connector, brown, on protective housing for control units on left in engine compartment |
| 1 | Earth strap, battery body |
| 500 | Screw connection 1 (30), on relay plate |
| A17 | Connection (61), in dash panel wiring harness |
| A52 | Positive connection 2 (30), in dash panel wiring harness |
| --- | Only models with automatic gearbox |
| G186 | Throttle valve drive (electric power control) |
| G187 | Throttle valve drive angle sender 1 (electric power control) |
| G188 | Throttle valve drive angle sender 2 (electric power control) |
| J17 | Fuel pump relay |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| J338 | Throttle valve module |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Spark plug |
| S229 | Fuse in fuse holder |
| T5e | 5-pin connector, black, on ignition transformer |
| T6a | 6-pin connector, black, on throttle valve control module |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T10e | 10-pin connector, orange, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| 504 | Screw connection 1 (87), on relay plate |
| G42 | Intake air temperature sender |
| G61 | Knock sensor 1 |
| G66 | Knock sensor 2 |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| T3a | 3-pin connector, green, on left on bulkhead |
| T3c | 3-pin connector, blue, on left on bulkhead |
| T3s | 3-pin connector, red, on protective housing for control units on left in engine compartment |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 501 | Screw connection 2 (30), on relay plate |
| D102 | Connection 2, in engine compartment wiring harness |
| G28 | Engine speed sender |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| J569 | Brake servo relay |
| S131 | Fuse 1 |
| T3b | 3-pin connector, grey, on left on bulkhead |
| T3s | 3-pin connector, red, on protective housing for control units on left in engine compartment |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| V192 | Vacuum pump for brakes |
| 220 | Earth connection (sender earth), in engine wiring harness |
| --- | Only models with automatic gearbox |
| G2 | Coolant temperature display sender |
| G40 | Hall sender 1 |
| G62 | Coolant temperature sender |
| G163 | Hall sender 2 |
| G294 | Brake servo pressure sensor |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| T4k | 4-pin connector, black, on coolant temperature sender |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D106 | Connection 4, in engine compartment wiring harness |
| --- | Only models with automatic gearbox |
| E45 | Cruise control system switch, position 0 = OFF in detent, position 1 = OFF with button, position 2 = ON, position 3 = RES |
| E227 | Cruise control system (CCS) SET button |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch, diesel direct injection system |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| S7 | Fuse in relay plate fuse holder |
| S13 | Fuse 13 on fuse holder |
| T10 | 10-pin connector, black, next to steering column |
| T15a | 15-pin connector, white, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| A89 | Connection 2 (54), in dash panel wiring harness |
| A104 | Positive connection 2 (15), in dash panel wiring harness |
| A130 | Connection (cruise control system), in dash panel wiring harness |
| A154 | Connection (brake pedal switch), in dash panel wiring harness |
| --- | Only models with cruise control system (CCS) |
| * | Only models with manual gearbox |
| D | Ignition/starter switch |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N83 | Injector, cylinder 5 |
| N84 | Injector, cylinder 6 |
| S232 | Fuse in fuse holder |
| T10e | 10-pin connector, orange, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| A2 | Positive connection (15), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| --- | Only models with cruise control system (CCS) |
| * | Only models with automatic gearbox |
| E15 | Heated rear window switch |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| J255 | Climatronic control unit |
| J314 | Air conditioning system cut-off control unit |
| S231 | Fuse in fuse holder |
| T6b | 6-pin connector, on accelerator position sender |
| T6h | 6-pin connector, black, on heated rear window switch |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T10d | 10-pin connector, brown, on protective housing for control units on left in engine compartment |
| T15a | 15-pin connector, white, on protective housing for control units on left in engine compartment |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment |
| T16b | 16-pin connector, on Climatronic control unit |
| T121 | 121-pin connector, on Motronic control unit |
| A64 | Connection (30, speed boost), in dash panel wiring harness |
| * | Only models with front-wheel drive |
| ** | Only models with all-wheel drive |
| *** | Only models with air conditioning system |
| G70 | Air mass meter |
| J220 | Motronic control unit, in protective housing for control units |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N156 | Variable intake manifold changeover valve |
| N205 | Inlet camshaft control valve 1 |
| N208 | Inlet camshaft control valve 2 |
| T121 | 121-pin connector, on Motronic control unit |
| D101 | Connection 1, in engine wiring harness |
| D107 | Connection 5, in engine wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| G130 | Lambda probe after catalytic converter |
| G131 | Lambda probe 2 after catalytic converter |
| J104 | ABS with EDL control unit |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| T4c | 4-pin connector, brown |
| T4d | 4-pin connector, green |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| D101 | Connection 1, in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| J220 | Motronic control unit, in protective housing on left in engine compartment |
| J299 | Secondary air pump relay (373), in protective housing for control units on left in engine compartment |
| N112 | Secondary air inlet valve |
| S130 | Secondary air pump fuse, in protective housing for control units on left in engine compartment |
| S234 | Fuse in fuse holder |
| T3a | 3-pin connector, green, on left on bulkhead |
| T8 | 8-pin connector, brown |
| T10d | 10-pin connector, brown, on protective housing for control units on left in engine compartment |
| T10e | 10-pin connector, orange, on protective housing for control units on left in engine compartment |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment |
| T121 | 121-pin connector, on Motronic control unit |
| V101 | Secondary air pump motor |
| 28 | Earth point, on left on plenum chamber |
| 85 | Earth connection 1, in engine compartment wiring harness |
| A60 | Connection (speed signal), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| F1 | Oil pressure switch |
| F120 | Anti-theft alarm and vermin repellent system contact switch |
| G22 | Speedometer sender (inductive sender on gearbox) |
| G32 | Coolant shortage indicator sender |
| G266 | Oil level and oil temperature sender |
| J393 | Convenience system central control unit |
| S5 | Fuse in relay plate fuse holder |
| T1f | Single connector, black, on right on engine block |
| T3d | 3-pin connector, black |
| T10a | 10-pin connector, brown, left A-pillar coupling station |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T10d | 10-pin connector, brown, on protective housing for control units on left in engine compartment |
| T15k | 15-pin connector, grey |
| 28 | Earth point, on bulkhead |
| 44 | Earth point, lower part of left A-pillar |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 86 | Earth connection 1, in rear wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| A91 | Connection (signal for dash panel insert), in dash panel wiring harness |
| --- | Only models with automatic gearbox |
| G | Fuel gauge sender |
| G6 | Fuel pump |
| G169 | Fuel gauge sender 2 |
| G237 | Fuel gauge sender 3 |
| S228 | Fuse in fuse holder |
| J285 | Display control unit, in dash panel insert |
| K38 | Oil level warning lamp |
| K83 | Exhaust emissions warning lamp |
| T4e | 4-pin connector, near fuel pump |
| T6c | 6-pin connector, blue, left A-pillar coupling station |
| T10a | 10-pin connector, brown, left A-pillar coupling station |
| T10b | 10-pin connector, black, on protective housing for control units on left in engine compartment |
| T32a | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, green, on dash panel insert |
| 78 | Earth point, lower part of right B-pillar |
| 197 | Earth connection 4, in rear wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 316 | Earth connection (sender earth) 2, in engine wiring harness |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| H11 | Oil pressure warning buzzer |
| J285 | Display control unit, in dash panel insert |
| J533 | Data bus diagnostic interface |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| K31 | Cruise control system warning lamp |
| K132 | Electronic power control fault lamp |
| L75 | Digital display illumination bulb |
| T32a | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, green, on dash panel insert |
| Y4 | Odometer display |
| A60 | Connection (speed signal), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
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