| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J59 | X-contact relief relay |
| S162 | Fuse 1 (30) in fuse holder on battery |
| S163 | Fuse 2 (30) in fuse holder on battery |
| S176 | Fuse 4 (30) in fuse holder on battery |
| S177 | Fuse 5 (30) in fuse holder on battery |
| T1a | Single pin connector, on starter |
| T2x | 2-pin connector, on alternator |
| T4 | 4-pin connector, near starter |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T10w | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| 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 |
| 503 | Screw connection (75x), on relay plate |
| 507 | Screw connection (30), on fuse holder on battery |
| J220 | Motronic control unit |
| S11 | Fuse in relay plate fuse holder |
| S11 | Fuse for direct shift gearbox mechatronic unit |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T10 | 10-pin connector, orange, in connector protective housing, on left in plenum chamber |
| T10w | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| A2 | Positive connection (15), in dash panel wiring harness |
| A98 | Positive connection 4 (30), in dash panel wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| J220 | Motronic control unit |
| N70 | Ignition coil 1 with output stage |
| N127 | Ignition coil 2 with output stage |
| N291 | Ignition coil 3 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T4o | 4-pin connector, on ignition coil 1 with output stage |
| T4p | 4-pin connector, on ignition coil 2 with output stage |
| T4q | 4-pin connector, on ignition coil 3 with output stage |
| T40 | 80-pin connector, Motronic control unit |
| 15 | Earth point, on cylinder head |
| 281 | Earth connection 1, in engine prewiring harness |
| J220 | Motronic control unit |
| N292 | Ignition coil 4 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T4r | 4-pin connector, on ignition coil 4 with output stage |
| T10 | 10-pin connector, orange, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, near battery |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 40-pin connector, on Motronic control unit |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 608 | Earth point, in centre of plenum chamber |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| J299 | Secondary air pump relay |
| T2c | 2-pin connector, on secondary air pump motor |
| T4k | 4-pin connector, on secondary air pump relay |
| T5b | 5-pin connector, on Motronic current supply relay |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T81 | 81-pin connector, on Motronic control unit |
| V101 | Secondary air pump motor |
| 609 | Earth point, on right in plenum chamber |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D103 | Connection 3, in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| G2 | Coolant temperature display sender |
| G40 | Hall sender |
| G62 | Coolant temperature sender |
| J220 | Motronic control unit |
| N112 | Secondary air inlet valve |
| T2be | 2-pin connector, on secondary air inlet valve |
| T3g | 3-pin connector, on Hall sender |
| T4i | 4-pin connector, on coolant temperature sender |
| T14a | 14-pin connector, near battery |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| 220 | Earth connection (sender earth), in engine wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| G18 | Temperature sensor |
| G61 | Knock sensor 1 |
| G66 | Knock sensor 2 |
| J220 | Motronic control unit |
| T2av | 2-pin connector, on knock sensor 2 |
| T2az | 2-pin connector, on knock sensor 1 |
| T2bg | 2-pin connector, on temperature sensor |
| T10 | 10-pin connector, orange, in connector protective housing, on left in plenum chamber |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| 139 | Earth connection (sender earth), in Motronic wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| G28 | Engine speed sender |
| G31 | Charge air pressure sender |
| G79 | Accelerator position sender |
| G185 | Gearbox output speed sender |
| J220 | Motronic control unit |
| T3 | 3-pin connector, on engine speed sender |
| T4b | 4-pin connector, on charge air pressure sender |
| T6b | 6-pin connector, on accelerator position sender |
| T10 | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T10h | 10-pin connector, blue, in connector protective housing, on left in plenum chamber |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| D101 | Connection 1, in engine compartment wiring harness |
| G108 | Lambda probe 2 |
| G186 | Throttle valve drive for electric throttle (EPC) |
| G187 | Throttle valve drive angle sender 1 for electric throttle (EPC) |
| G188 | Throttle valve drive angle sender 2 for electric throttle (EPC) |
| J220 | Motronic control unit |
| J338 | Throttle valve module |
| T4s | 4-pin connector, in engine compartment |
| T6a | 6-pin connector, on throttle valve drive for electric throttle (EPC) |
| T10 | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N80 | Activated charcoal filter system solenoid valve 1 |
| T2ab | 2-pin connector, on injector, cylinder 1 |
| T2ac | 2-pin connector, on injector, cylinder 2 |
| T2ad | 2-pin connector, on injector, cylinder 3 |
| T2ae | 2-pin connector, on injector, cylinder 4 |
| T2af | 2-pin connector, on active charcoal filter system solenoid valve 1 |
| T10 | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, near battery |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| A101 | Connection 3 (87), in dash panel wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| G39 | Lambda probe |
| J220 | Motronic control unit |
| N79 | Heater element for crankcase breather |
| T2da | 2-pin connector, on heater element for crankcase breather |
| T4d | 4-pin connector, on lambda probe |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T6c | 6-pin connector, in engine compartment |
| T10 | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T10w | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T81 | 81-pin connector, on Motronic control unit |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 608 | Earth point, in centre of plenum chamber |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| G70 | Air mass meter |
| G130 | Lambda probe after catalytic converter |
| J220 | Motronic control unit |
| T5c | 5-pin connector, on air mass meter |
| T6m | 6-pin connector, on lambda probe after catalytic converter |
| T10e | 10-pin connector, black, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, near battery |
| T40 | 40-pin connector, on Motronic control unit |
| T81 | 81-pin connector, on Motronic control unit |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| J220 | Motronic control unit |
| S13 | Fuse in relay plate fuse holder |
| S239 | Fuse on fuse holder |
| T4f | 4-pin connector, on brake pedal switch |
| T4u | 4-pin connector, on brake pedal switch |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T10e | 10-pin connector, black, in connector protective housing, on left in plenum chamber |
| T10w | 10-pin connector, white, in connector protective housing, on left in plenum chamber |
| T81 | 81-pin connector, on Motronic control unit |
| A18 | Connection (54), in dash panel wiring harness |
| A20 | Positive connection (15a), in dash panel wiring harness |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| J17 | Fuel pump relay |
| S228 | Fuse on fuse holder |
| S232 | Fuse on fuse holder |
| S234 | Fuse on fuse holder |
| S243 | Fuse on fuse holder |
| T4h | 4-pin connector, on fuel system pressurisation pump |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| 42 | Earth point, next to steering column |
| 49 | Earth point, near steering column |
| 135 | Earth connection 2, in dash panel wiring harness |
| 504 | Screw connection 1 (87), on relay plate |
| A99 | Connection 1 (87), in dash panel wiring harness |
| A100 | Connection 2 (87), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| G22 | Speedometer sender |
| G32 | Coolant shortage indicator sender |
| S5 | Fuse in relay plate fuse holder |
| S7 | Fuse in relay plate fuse holder |
| S229 | Fuse on fuse holder |
| T2z | 2-pin connector, on coolant shortage indicator sender |
| T3h | 3-pin connector, on speedometer sender |
| T6 | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, near battery |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| A104 | Positive connection 2 (15), in dash panel wiring harness |
| B163 | Positive connection 1 (15), in interior wiring harness |
| F1 | Oil pressure switch |
| G17 | Ambient temperature sensor |
| J285 | Control unit in dash panel insert |
| K | Dash panel insert |
| K3 | Oil pressure warning lamp |
| T1b | Single pin connector, on oil pressure switch |
| T2ag | 2-pin connector, on ambient temperature sensor |
| T14a | 14-pin connector, near battery |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| A13 | Connection (door contact switch), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| K | Dash panel insert |
| K2 | Alternator warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K105 | Reserve fuel warning lamp |
| T16 | 16-pin connector, diagnostic |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
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