| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X-contact relief relay |
| S237 | Fuse 37 in fuse holder |
| T1 | 1-pin connector, on right on engine block |
| 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 |
| T10e | 10-pin connector, orange, on protective housing for control units on left in engine compartment |
| 1 | Earth strap, battery body |
| 2 | Earth strap, gearbox - body |
| 500 | Screw connection 1 (30), on relay plate |
| 502 | Screw connection 1 (30a), on relay plate |
| A17 | Connection (61), in dash panel wiring harness |
| A52 | Positive connection 2 (30), in dash panel wiring harness |
| N | Ignition coil 1, on left of cylinder head |
| N122 | Output stage for ignition coils, on left of cylinder head |
| N128 | Ignition coil 2, on left of cylinder head |
| N158 | Ignition coil 3, on left of cylinder head |
| N163 | Ignition coil 4, on left of cylinder head |
| N164 | Ignition coil 5, on left of cylinder head |
| P | Spark plug connector |
| Q | Spark plug |
| T6 | 6-pin connector, brown, on output stage for ignition coils |
| T6a | 6-pin connector, black, on output stage for ignition coils |
| T6b | 6-pin connector, black, on ignition coil |
| T10e | 10-pin connector, orange, on protective housing for control units on left in engine compartment |
| A20 | Connection (15a), in dash panel wiring harness |
| D52 | Positive connection (15a) in engine compartment wiring harness |
| D | Ignition/starter switch |
| G70 | Air mass meter |
| J207 | Starter inhibitor relay |
| J220 | Motronic control unit, in protective housing for control units on left in engine compartment |
| S231 | Fuse 31 in fuse holder |
| S232 | Fuse 32 in fuse holder |
| T9 | 9-pin connector, on starter inhibitor relay |
| T10h | 10-pin connector, blue, on protective housing for control units on left in engine compartment |
| T80 | 80-pin connector, on Motronic control unit |
| 12 | Earth point, on left in engine compartment |
| 124 | Earth connection, in right side engine compartment wiring harness |
| A2 | Positive connection (15), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| --- | Only models with automatic gearbox |
| * | Only models with manual gearbox |
| G2 | Coolant temperature sender |
| G40 | Hall sender |
| G62 | Coolant temperature sender |
| J220 | Motronic control unit, in 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 |
| T10h | 10-pin connector, blue, on protective housing for control units on left in engine compartment |
| T10i | 10-pin connector, blue, right A-pillar |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment, from August 1998 |
| T80 | 80-pin connector, on Motronic control unit |
| 220 | Earth connection (sender earth), in engine wiring harness |
| --- | Only models with automatic gearbox |
| E15 | Heated rear window switch |
| F60 | Idling speed switch |
| G61 | Knock sensor 1 |
| G69 | Throttle valve potentiometer |
| G72 | Intake manifold temperature sender |
| G88 | Throttle valve positioner potentiometer |
| J220 | Motronic control unit, in protective housing for control units on left in engine compartment |
| J255 | Climatronic control unit |
| J338 | Throttle valve module |
| T3a | 3-pin connector, green, on left on bulkhead |
| T6h | 6-pin connector, black, on heated rear window switch |
| T8h | 8-pin connector, black |
| T10b | 10-pin connector, black, 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 units |
| T80 | 80-pin connector, on Motronic control unit |
| V60 | Throttle valve positioner |
| 15 | Earth point, on cylinder head |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 501 | Screw connection 2 (30), on relay plate |
| A64 | Connection (30, speed boost), in dash panel wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| F | Brake light switch |
| F47 | Cruise control system brake pedal switch |
| G28 | Engine speed sender |
| G66 | Knock sensor 2 |
| J220 | Motronic control unit, in protective housing for control units on left in engine compartment |
| S7 | Fuse 7 in fuse holder |
| S13 | Fuse 13 in fuse holder |
| T3b | 3-pin connector, grey, on left on bulkhead |
| T3c | 3-pin connector, blue, on left on bulkhead |
| T15a | 15-pin connector, white, on protective housing for control units on left in engine compartment |
| T80 | 80-pin connector, on Motronic control unit |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A89 | Connection (brake light switch), in dash panel wiring harness |
| A104 | Positive connection 2 (15), in dash panel wiring harness |
| A154 | Connection (brake pedal), in dash panel wiring harness |
| --- | Only models with automatic gearbox |
| *** | Only models with manual 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 |
| F36 | Clutch pedal switch, only with CCS |
| J220 | Motronic control unit |
| T10 | 10-pin connector, black, on right next to steering column |
| T15a | 15-pin connector, white, on protective housing for control units on left in engine compartment |
| T15m | 15-pin connector, brown, left A-pillar coupling station |
| T80 | 80-pin connector, on Motronic control unit |
| A130 | Connection (CCS), in dash panel wiring harness |
| A154 | Connection (brake pedal switch), in dash panel wiring harness |
| * | Only models with manual gearbox |
| ---- | Only models with automatic gearbox |
| J17 | Fuel pump relay (372) |
| J220 | Motronic control unit, in protective housing for control units 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 |
| S234 | Fuse 34 in fuse holder |
| 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 |
| T10f | 10-pin connector |
| T80 | 80-pin connector, on Motronic control unit |
| 504 | Screw connection 1 (87F), on relay plate |
| E7 | Positive connection (87a), in Motronic wiring harness |
| G39 | Lambda probe |
| J220 | Motronic control unit, in protective housing for control units on left in engine compartment |
| J255 | Climatronic control unit |
| J299 | Secondary air pump relay (373), in protective housing for control units on left in engine compartment |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N112 | Secondary air inlet valve |
| N156 | Variable intake manifold changeover valve |
| S130 | Secondary air pump fuse, in protective housing for control units on left in engine compartment |
| S229 | Fuse 29 in fuse holder |
| T4 | 4-pin connector, brown |
| 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 |
| T16b | 16-pin connector, on Climatronic control unit |
| T80 | 80-pin connector, on Motronic control unit |
| V101 | Secondary air pump motor |
| A45 | Connection (RPM signal), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| J220 | Motronic control unit, in protective housing for control units on left in engine compartment |
| J155 | Coolant pump control unit, in protective housing for control units on left in engine compartment |
| S78 | Coolant pump fuse, in protective housing for control units on left in engine compartment |
| T8g | 8-pin connector, on coolant pump control unit |
| T10d | 10-pin connector, brown, 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 |
| T80 | 80-pin connector, on Motronic control unit |
| V50 | Coolant circulation pump |
| 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 |
| E7 | Positive connection (87a), in Motronic wiring harness |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| G22 | Speedometer sender, inductive sender on left in gearbox |
| G32 | Coolant shortage indicator sender |
| S228 | Fuse in fuse holder |
| T3d | 3-pin connector, black |
| 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 |
| 75 | Earth point, rear right 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 |
| F120 | Anti-theft alarm system contact switch, on engine compartment lock |
| G266 | Oil level and oil temperature sender |
| J285 | Display control unit, in dash panel insert |
| J393 | Convenience system central control unit, in front left footwell |
| K38 | Oil level warning lamp |
| S5 | Fuse 5 on fuse holder |
| 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 |
| T32a | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, green, on dash panel insert |
| 44 | Earth point, lower part of left A-pillar |
| 86 | Earth connection 1, in rear wiring harness |
| A74 | Connection (15, fuse 5), in dash panel wiring harness |
| W37 | Connection (ATA), in floor wiring harness |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| H11 | Oil pressure warning buzzer |
| J285 | Display control unit, in dash panel insert |
| L75 | Digital display illumination bulb |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| K31 | Cruise control system warning lamp |
| 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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