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Wiring Diagram VW JETTA 2009 - Starter - Alternator
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X-contact relief relay |
| J207 | Starter inhibitor relay |
| J226 | Starter inhibitor and reversing light relay |
| S162 | Fuse 1 (30), in battery fuse holder |
| 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 |
| T4 | 4-pin connector |
| T8b | 8-pin connector |
| 500 | Threaded connection 1 (30), on relay plate |
| 502 | Threaded connection 1 (30a) on relay plate |
| * | Only models with no air conditioning system |
| *2 | Only models with manual gearbox |
| *3 | Up to June 2008 |
| *4 | From July 2008 |
Wiring Diagram VW JETTA 2009 - Main relay
| D | Ignition/starter switch |
| J271 | Main relay |
| S229 | Fuse 29 in fuse holder |
| S237 | Fuse 37 in fuse holder |
| T8 | 8-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 |
| A52 | Positive connection 2 (30), in dash panel wiring harness |
| A192 | Positive connection 3 (15a) in dash panel wiring harness |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D104 | Positive connection 2 (30a), in engine compartment wiring harness |
Wiring Diagram VW JETTA 2009 - Motronic control unit - Ignition coil 1 with output stage - Ignition coil 2 with output stage - Ignition coil 3 with output stage - Ignition coil 4 with output stage - Spark plug connector - Spark plugs
| 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 |
| T2 | 2-pin connector |
| T6g | 6-pin connector |
| T121 | 121-pin connector |
| 85 | Earth connection 1, in engine compartment wiring harness |
| A192 | Positive connection 3 (15a) in dash panel wiring harness |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D104 | Positive connection 2 (30a), in engine compartment wiring harness |
Wiring Diagram VW JETTA 2009 - Motronic control unit
| J104 | ABS control unit |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| T14a | 14-pin connector |
| T47a | 47-pin connector |
| T52 | 52-pin connector |
| T121 | 121-pin connector |
| 85 | Earth connection 1, in engine compartment wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
Wiring Diagram VW JETTA 2009 - Hall sender - Accelerator position sender - Accelerator position sender 2 - Motronic control unit
| G40 | Hall sender |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| J220 | Motronic control unit |
| T6b | 6-pin connector |
| T121 | 121-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
Wiring Diagram VW JETTA 2009 - Coolant temperature display sender - Coolant temperature sender - Motronic control unit - Throttle valve module - Fuel system diagnostic pump
| G2 | Coolant temperature display sender |
| G62 | Coolant temperature sender |
| G186 | Throttle valve drive for electric throttle |
| G187 | Throttle valve drive angle sender 1 for electric throttle |
| G188 | Throttle valve drive angle sender 2 for electric throttle |
| J220 | Motronic control unit |
| J338 | Throttle valve module |
| T6h | 6-pin connector |
| T14a | 14-pin connector |
| T121 | 121-pin connector |
| V144 | Fuel system diagnostic pump |
| 220 | Earth connection (sender earth), in engine wiring harness |
Wiring Diagram VW JETTA 2009 - Engine speed sender - Knock sensor 1 - Knock sensor 2 - Motronic control unit
| E35 | Selector lever for retarder brake |
| G28 | Engine speed sender |
| G61 | Knock sensor 1 |
| G66 | Knock sensor 2 |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| T3f | 3-pin connector |
| T8b | 8-pin connector |
| T14 | 14-pin connector |
| T121 | 121-pin connector |
| 139 | Earth connection (sender earth), in Motronic wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| L9 | Connection 1, in air conditioning system wiring harness |
Wiring Diagram VW JETTA 2009 - Motronic control unit - Injector - cylinder 1 - Injector - cylinder 2 - Injector - cylinder 3 - Injector - cylinder 4 - Heater element for crankcase breather
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N79 | Heater element for crankcase breather |
| S232 | Fuse 32 in fuse holder |
| T14a | 14-pin connector |
| T121 | 121-pin connector |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 608 | Earth point, central in plenum chamber |
| D95 | Connection (injectors), in engine compartment wiring harness |
Wiring Diagram VW JETTA 2009 - Lambda probe - Motronic control unit - Brake vacuum pump fuse
| G39 | Lambda probe |
| J220 | Motronic control unit |
| S283 | Brake vacuum pump fuse |
| T6r | 6-pin connector |
| T6w | 6-pin connector |
| T121 | 121-pin connector |
| V192 | Vacuum pump for brakes |
| E30 | Connection (87a), in engine wiring harness |
Wiring Diagram VW JETTA 2009 - Lambda probe after catalytic converter - Motronic control unit - Secondary air pump relay - Activated charcoal filter solenoid valve 1 - Secondary air pump motor
| G130 | Lambda probe after catalytic converter |
| J220 | Motronic control unit |
| J299 | Secondary air pump relay |
| N80 | Activated charcoal filter solenoid valve 1 |
| T4f | 4-pin connector |
| T121 | 121-pin connector |
| V101 | Secondary air pump motor |
| 609 | Earth point, on right in plenum chamber |
| D103 | Connection 3 in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| * | Up to June 2008 |
| *2 | From July 2008 |
Wiring Diagram VW JETTA 2009 - Brake light switch - Clutch pedal switch - Brake pedal switch - Air mass meter - Motronic control unit
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| G70 | Air mass meter |
| J220 | Motronic control unit |
| S13 | Fuse 13 in fuse holder |
| T4q | 4-pin connector |
| T121 | 121-pin connector |
| A18 | Connection (54), in dash panel wiring harness |
| A20 | Positive connection (15a), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| * | Only models with manual gearbox |
| *2 | From July 2008 |
| *3 | Up to June 2008 |
Wiring Diagram VW JETTA 2009 - Cruise control system switch - Cruise control system (CCS) SET button - Fuel pump relay - Motronic control unit
| E45 | Cruise control system switch |
| E227 | Cruise control system (CCS) SET button |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| T10s | 10-pin connector |
| T75 | 75-pin connector |
| T121 | 121-pin connector |
| A20 | Positive connection (15a), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| * | Only models with multifunction steering wheel |
| *2 | see applicable current flow diagram for multifunction steering wheel |
Wiring Diagram VW JETTA 2009 - 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 |
| T14a | 14-pin connector |
| 42 | Earth point, next to steering column |
| 49 | Earth point, near ... |
| 81 | Earth connection 1, in dash panel wiring harness |
| 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 |
| A193 | Connection (87a), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
Wiring Diagram VW JETTA 2009 - Oil pressure switch - Speedometer sender - Control unit in dash panel insert - Oil pressure warning lamp
| F1 | Oil pressure switch |
| F4 | Reversing light switch |
| G22 | Speedometer sender |
| J285 | Control unit in dash panel insert |
| K3 | Oil pressure warning lamp |
| S5 | Fuse 5 in fuse holder |
| S7 | Fuse 7 in fuse holder |
| T14a | 14-pin connector |
| T32 | 32-pin connector |
| A27 | Connection (speed signal), in dash panel wiring harness |
| B163 | Positive connection 1 (15), in interior wiring harness |
Wiring Diagram VW JETTA 2009 - Fuel gauge - Coolant temperature gauge - Rev. counter - Speedometer - Control unit in dash panel insert - Alternator warning lamp - Coolant temperature and coolant shortage warning lamp - Reserve fuel warning lamp
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G21 | Speedometer |
| H3 | Buzzer and gong |
| J31 | Automatic intermittent wash and wipe relay |
| J285 | Control unit in dash panel insert |
| J393 | Convenience system central control unit |
| K2 | Alternator warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K105 | Reserve fuel warning lamp |
| T18a | 18-pin connector |
| T24 | 24-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 |
Wiring Diagram VW JETTA 2009 - Multifunction indicator - Control unit in dash panel insert - Cruise control system warning lamp - Exhaust emissions warning lamp - Electronic power control fault lamp
| J104 | ABS control unit |
| 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 |
| T16 | 16-pin connector |
| T32 | 32-pin connector |
| T32a | 32-pin connector |
| T47a | 47-pin connector |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
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