| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| F18 | Thermal switch for radiator fan |
| F125 | Multifunction switch |
| J207 | Starter inhibitor relay |
| S131 | Fuse 1 |
| S132 | Fuse 2 |
| S133 | Fuse 3 |
| S134 | Fuse 4 |
| S138 | Fuse 5 |
| S164 | Fuse 3 (30), in fuse holder on battery |
| T2f | 2-pin connector, cable channel, on left in engine compartment |
| T3e | 3-pin connector, black, on main fuse box/battery |
| T4b | 4-pin connector, in left engine compartment |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10b | 10-pin connector, grey, in plenum chamber |
| 1 | Earth strap, battery - body |
| 2 | Earth strap, gearbox - body |
| * | models with manual heating control |
| ** | models with air conditioning system |
| # | models with manual gearbox |
| ## | models with automatic gearbox 09G |
| C10 | Suppression filter |
| D | Ignition/starter switch |
| F | Brake light switch |
| F2 | Driver door contact switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| M9 | Left brake light bulb |
| M25 | High level brake light bulb |
| S5 | Fuse in fuse holder |
| S13 | Fuse in fuse holder |
| S231 | Fuse 31 in fuse holder |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10a | 10-pin connector, white, in plenum chamber |
| T10e | 10-pin connector, black, in plenum chamber |
| 277 | Earth connection 3, in interior wiring harness, behind centre dash panel |
| A2 | Positive connection (15), in dash panel wiring harness |
| B131 | Connection (54), in interior wiring harness |
| B135 | Connection (15a), in interior wiring harness |
| B154 | Connection 1 (DCt), in interior wiring harness |
| B185 | Connection 2 (54), in interior wiring harness |
| C22 | Interference suppression choke for airbag |
| E3 | Hazard warning light switch |
| E45 | Cruise control system switch |
| F88 | Power assisted steering pressure switch |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender -2- |
| G235 | Exhaust gas temperature sender 1 |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| J429 | Central locking control unit |
| T10a | 10-pin connector, white, in plenum chamber |
| T10e | 10-pin connector, black, in plenum chamber |
| T10g | 10-pin connector, blue, in plenum chamber |
| T10ae | 10-pin connector, on cruise control system switch |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| B135 | Connection (15a), in interior wiring harness |
| * | models with cruise control system |
| ** | only engine BAM |
| G39 | Lambda probe |
| G70 | Air mass meter |
| G130 | Lambda probe after catalytic converter |
| J220 | Motronic control unit |
| J299 | Secondary air pump relay |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N112 | Secondary air inlet valve |
| T4g | 4-pin connector, on right in engine compartment, for lambda probe after catalytic converter |
| T6m | 6-pin connector, brown, in plenum chamber |
| T6q | 6-pin connector, on right in engine compartment, for lambda probe |
| T10a | 10-pin connector, white, in plenum chamber |
| V101 | Secondary air pump motor |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe heater after catalytic converter |
| 12 | Earth point, on left in engine compartment |
| D80 | Positive connection (87a, for active charcoal filter system solenoid valve), in engine compartment wiring harness |
| * | only engine ARY, AUQ, AUM |
| ** | only engine BAM |
| J220 | Motronic control unit |
| J492 | Four-wheel drive control unit |
| J569 | Brake servo relay |
| N75 | Charge pressure control solenoid valve |
| N205 | Inlet camshaft control valve 1 |
| N249 | Turbocharger air recirculation valve |
| S237 | Fuse 37 in fuse holder |
| S279 | Hydraulic pump relay fuse |
| T6m | 6-pin connector, brown, in plenum chamber |
| T8d | 8-pin connector, on four-wheel drive control unit |
| T10a | 10-pin connector, white, in plenum chamber |
| V192 | Vacuum pump for brakes |
| 238 | Earth connection 1, in interior wiring harness, near luggage compartment light |
| 249 | Earth connection 2, in interior wiring harness |
| A98 | Positive connection 4 (30), in dash panel wiring harness |
| B156 | Positive connection 4 (30), in interior wiring harness |
| D22 | Connection (via fuse 234), in front right wiring harness |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| • | CAN bus (data wire) |
| * | engine ARY, AUM, AUQ |
| ** | engine BAM |
| *** | models with automatic gearbox |
| G28 | Engine speed sender |
| G31 | Charge air pressure sender |
| G61 | Knock sensor 1 |
| G163 | Hall sender |
| J104 | ABS control unit with EDL |
| J220 | Motronic control unit |
| T2am | 2-pin connector, black, in engine compartment |
| T3d | 3-pin connector, grey, in engine compartment |
| T10a | 10-pin connector, white, in plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| D141 | Connection (5V), in engine wiring harness |
| • | CAN bus (data wire) |
| G2 | Coolant temperature sender |
| G42 | Intake air temperature sender |
| G62 | Coolant temperature sender |
| G66 | Knock sensor 2 |
| 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) |
| J220 | Motronic control unit |
| J338 | Throttle valve module |
| T2an | 2-pin connector, black, in engine compartment |
| T14i | 14-pin connector, in left engine compartment |
| 12 | Earth point, on left in engine compartment |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| * | engine AUM, AUQ, ARY |
| ** | engine BAM |
| E87 | Operating and display unit for air conditioning system |
| 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 |
| N292 | Ignition coil 4 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T10x | 10-pin connector, orange, in plenum chamber |
| T17 | 17-pin connector, behind right dash panel, to air conditioner wiring harness |
| 15 | Earth point, on cylinder head |
| 281 | Earth connection 1, in engine wiring harness |
| 283 | Earth connection 2, in engine wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness, near micro-central electrics |
| D106 | Connection 4, in engine compartment wiring harness |
| * | engine AUM, AUQ, ARY |
| ** | engine BAM |
| *** | models with air conditioning system |
| G266 | Oil level and oil temperature sender, service interval |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| S11 | Fuse in fuse holder |
| T2m | 2-pin connector, cable channel, on left in engine compartment |
| T6m | 6-pin connector, brown, in plenum chamber |
| T14i | 14-pin connector, in left engine compartment |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| 283 | Earth connection 2, in engine wiring harness |
| A139 | Connection 3 (15), in dash panel wiring harness |
| B157 | Positive connection -3- (15a), in interior wiring harness |
| D140 | Connection (injectors), in engine wiring harness |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G169 | Fuel gauge sender 2 |
| S7 | Fuse in fuse holder |
| S228 | Fuse 28 in fuse holder |
| S229 | Fuse 29 in fuse holder |
| S232 | Fuse 32 in fuse holder |
| S234 | Fuse 34 in fuse holder |
| S243 | Fuse 43 in fuse holder |
| T14i | 14-pin connector, in left engine compartment |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 277 | Earth connection 3, in interior wiring harness, behind centre dash panel |
| 283 | Earth connection 2, in engine wiring harness |
| A99 | Connection 1 (87), in dash panel wiring harness |
| A100 | Connection 2 (87), in dash panel wiring harness |
| B149 | Positive connection 2 (15a), in interior wiring harness, near starter inhibitor and reversing light relay |
| * | models with front-wheel drive |
| ** | models with four-wheel drive |
| *** | wire in fuel tank |
| C10 | Suppression filter |
| D2 | Immobilizer reader coil |
| F1 | Oil pressure switch |
| F9 | Handbrake warning switch |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K83 | Exhaust emissions warning lamp |
| T14i | 14-pin connector, in left engine compartment |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 277 | Earth connection 3, in interior wiring harness, behind centre dash panel |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A115 | Connection (handbrake warning), in dash panel wiring harness |
| • | CAN bus (data wire) |
| * | engine ARY, AUM, AUQ |
| ** | engine BAM |
| # | models with front-wheel drive |
| ## | models with four-wheel drive |
| E87 | Operating and display unit for air conditioning system |
| G17 | Ambient temperature sensor |
| G106 | Ambient temperature indicator |
| J285 | Control unit with display in dash panel insert |
| T12a | 12-pin connector, behind the dash panel, right |
| T17 | 17-pin connector, behind right dash panel, to air conditioner wiring harness |
| T32a | 32-pin connector, green, on dash panel insert |
| 97 | Earth connection 1, in air conditioning system wiring harness |
| 112 | Earth connection 2, in air conditioning system wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| * | models with manual heating control |
| ** | models with air conditioning system |
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