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Wiring Diagram VW GOLF 2003 - Battery - Starter - Alternator - Voltage regulator - X-contact relief relay - Fuse 5 (30) - in battery fuse holder
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X-contact relief relay |
| J226 | Starter inhibitor and reversing light relay |
| S163 | Fuse 2 (30), in battery fuse holder |
| S176 | Fuse 4 (30), in battery fuse holder |
| S177 | Fuse 5 (30), in battery fuse holder |
| T2e | 2-pin connector |
| T6 | 6-pin connector |
| 500 | Threaded connection 1 (30), on relay plate |
| 502 | Threaded connection 1 (30a) on relay plate |
| A41 | Positive connection (50), in dash panel wiring harness |
| * | According to equipment |
| *2 | Only models with automatic gearbox |
| *3 | Only models with manual gearbox |
Wiring Diagram VW GOLF 2003 - Motronic control unit - Ignition transformer - Spark plug connector - Spark plugs
| D | Ignition/starter switch |
| J220 | Motronic control unit |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Spark plugs |
| S10 | Fuse 10 in fuse holder |
| S229 | Fuse 29 in fuse holder |
| T4a | 4-pin connector |
| T6 | 6-pin connector |
| T14a | 14-pin connector |
| T80 | 80-pin connector |
| 501 | Threaded connection 2 (30), on relay plate |
| A2 | Positive connection (15), in dash panel wiring harness |
| A32 | Positive connection (30), in dash panel wiring harness |
| A98 | Positive connection 4 (30), in dash panel wiring harness |
| A104 | Positive connection 2 (15), in dash panel wiring harness |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
Wiring Diagram VW GOLF 2003 - Coolant temperature display sender - Hall sender - Coolant temperature sender - Motronic control unit
| G2 | Coolant temperature display sender |
| G40 | Hall sender |
| G62 | Coolant temperature sender |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J226 | Starter inhibitor and reversing light relay |
| T10 | 10-pin connector |
| T10g | 10-pin connector |
| T14a | 14-pin connector |
| T68 | 68-pin connector |
| T80 | 80-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D141 | Connection (5V) in engine prewiring harness |
| * | Only models with automatic gearbox |
Wiring Diagram VW GOLF 2003 - Idling speed switch - Knock sensor 1 - Knock sensor 2 - Throttle valve potentiometer - Throttle valve module potentiometer - Motronic control unit - Throttle valve module - Throttle valve module
| F60 | Idling speed switch |
| G61 | Knock sensor 1 |
| G66 | Knock sensor 2 |
| G69 | Throttle valve potentiometer |
| G88 | Throttle valve module potentiometer |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J338 | Throttle valve module |
| T2a | 2-pin connector |
| T8 | 8-pin connector |
| T10 | 10-pin connector |
| T68 | 68-pin connector |
| T80 | 80-pin connector |
| V60 | Throttle valve module |
| 220 | Earth connection (sender earth), in engine wiring harness |
| * | Connection for air conditioner "ready" |
| *2 | Compressor switch-off |
| *3 | Only models with automatic gearbox |
Wiring Diagram VW GOLF 2003 - Engine speed sender - Motronic control unit - Injector - cylinder 1 - Injector - cylinder 2 - Injector - cylinder 3 - Injector - cylinder 4
| G28 | Engine speed sender |
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| S232 | Fuse 32 in fuse holder |
| T3 | 3-pin connector |
| T14a | 14-pin connector |
| T80 | 80-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A101 | Connection 3 (87) in dash panel wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
Wiring Diagram VW GOLF 2003 - Motronic control unit - Heater element for crankcase breather
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| N79 | Heater element for crankcase breather |
| T10w | 10-pin connector |
| T68 | 68-pin connector |
| T80 | 80-pin connector |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 608 | Earth point, central in plenum chamber |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| * | Only models with automatic gearbox |
Wiring Diagram VW GOLF 2003 - Lambda probe - Air mass meter - Fuel pump relay - Motronic control unit - Activated charcoal filter solenoid valve 1
| G39 | Lambda probe |
| G70 | Air mass meter |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| N80 | Activated charcoal filter solenoid valve 1 |
| T4b | 4-pin connector |
| T6 | 6-pin connector |
| T10 | 10-pin connector |
| T75 | 75-pin connector |
| T80 | 80-pin connector |
| T121 | 121-pin connector |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
Wiring Diagram VW GOLF 2003 - Fuel gauge sender - Fuel system pressurisation pump - Coolant shortage indicator sender
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| G32 | Coolant shortage indicator sender |
| S228 | Fuse 28 in fuse holder |
| S234 | Fuse 34 in fuse holder |
| S243 | Fuse 43 in fuse holder |
| T6 | 6-pin connector |
| T14a | 14-pin connector |
| 42 | Earth point, next to steering column |
| 49 | Earth point, near ... |
| 135 | Earth connection 2, in dash panel wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 504 | Threaded connection 1 (87), on relay plate |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A99 | Connection 1 (87) in dash panel wiring harness |
| A100 | Connection 2 (87) in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
Wiring Diagram VW GOLF 2003 - Oil pressure switch - Speedometer sender - Oil level and oil temperature sender - Control unit in dash panel insert
| F1 | Oil pressure switch |
| G22 | Speedometer sender |
| G266 | Oil level and oil temperature sender |
| J285 | Control unit in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K38 | Oil level warning lamp |
| S5 | Fuse 5 in fuse holder |
| S7 | Fuse 7 in fuse holder |
| T14a | 14-pin connector |
| T32 | 32-pin connector |
| T32a | 32-pin connector |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 608 | Earth point, central in plenum chamber |
| A20 | Positive connection (15a), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| B163 | Positive connection 1 (15), in interior wiring harness |
Wiring Diagram VW GOLF 2003 - Control unit in dash panel insert
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G21 | Speedometer |
| H3 | Buzzer and gong |
| J285 | Control unit in dash panel insert |
| K2 | Alternator warning lamp |
| K105 | Reserve fuel warning lamp |
| T12a | 12-pin connector |
| T32 | 32-pin connector |
| A13 | Connection (door contact switch), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| * | Revolution signal from engine control unit |
Wiring Diagram VW GOLF 2003 - Multifunction display call-up button - Multifunction display memory switch - Ambient temperature sensor - Control unit in dash panel insert - Data bus diagnostic interface
| E86 | Multifunction display call-up button |
| E109 | Multifunction display memory switch |
| G17 | Ambient temperature sensor |
| J119 | Multifunction indicator |
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| K31 | Cruise control system warning lamp |
| K83 | Exhaust emissions warning lamp |
| K132 | Electronic power control fault lamp |
| T6e | 6-pin connector |
| T16 | 16-pin connector |
| T32 | 32-pin connector |
| T32a | 32-pin connector |
| U31 | Diagnostic connection |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
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