Wiring Diagram VW JETTA 2007 - Battery - Starter - Alternator - Ignition/starter switch

| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| T2 | 2-pin connector |
| T4 | 4-pin connector |
| T10d | 10-pin connector |
| 501 | Threaded connection 2 (30), on relay plate |
| 671 | Earth point 1, on front of left longitudinal member |
| 672 | Earth point 2, on front of left longitudinal member |
| B169 | Positive connection 1 (30), in interior wiring harness |
| B239 | Positive connection 1 (50), in interior wiring harness |
| * | From August 2008 |
Wiring Diagram VW JETTA 2007 - Fuse holder A
| SA | Fuse holder A |
| SA1 | Fuse 1 in fuse holder A |
| SA2 | Fuse 2 in fuse holder A |
| SA3 | Fuse 3 in fuse holder A |
| SA4 | Fuse 4 in fuse holder A |
| SC5 | Fuse 5 on fuse holder C |
| SA5 | Fuse 5 in fuse holder A |
| SA6 | Fuse 6 in fuse holder A |
| SC15 | Fuse 15 on fuse holder C |
| SC19 | Fuse 19 on fuse holder C |
| SC37 | Fuse 37 on fuse holder C |
| SC38 | Fuse 38 on fuse holder C |
| SC40 | Fuse 40 on fuse holder C |
| SC41 | Fuse 41 on fuse holder C |
| SC42 | Fuse 42 on fuse holder C |
| SC46 | Fuse 46 on fuse holder C |
| SC51 | Fuse 51 on fuse holder C |
| 500 | Threaded connection 1 (30), on relay plate |
| B149 | Positive connection 2 (15a), in interior wiring harness |
| B156 | Positive connection (30a), in interior wiring harness |
| B170 | Positive connection 2 (30), in interior wiring harness |
| * | From March 2010 |
| *2 | From August 2008 |
Wiring Diagram VW JETTA 2007 - Simos control unit
| J17 | Fuel pump relay |
| J361 | Simos control unit |
| T10b | 10-pin connector |
| T80 | 80-pin connector |
| 607 | Earth point, on left in plenum chamber |
| * | According to equipment |
Wiring Diagram VW JETTA 2007 - Main relay - Simos control unit - Ignition transformer - Spark plug connector
| J271 | Main relay |
| J361 | Simos control unit |
| N79 | Heater element for crankcase breather |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Spark plugs |
| T4a | 4-pin connector |
| T10a | 10-pin connector |
| T10f | 10-pin connector |
| T80 | 80-pin connector |
| 343 | Earth connection (ignition coil), in injection system wiring harness |
| B611 | Connection 7, in interior wiring harness |
Wiring Diagram VW JETTA 2007 - Simos control unit
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| 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 |
| J338 | Throttle valve module |
| J361 | Simos control unit |
| T6h | 6-pin connector |
| T6x | 6-pin connector |
| T80 | 80-pin connector |
Wiring Diagram VW JETTA 2007 - Hall sender - Intake air temperature sender - Intake manifold pressure sender - Simos control unit
| G40 | Hall sender |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| J361 | Simos control unit |
| T3a | 3-pin connector |
| T4g | 4-pin connector |
| T80 | 80-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
| E46 | Positive connection 1 (5 Volt) in injection system wiring harness |
Wiring Diagram VW JETTA 2007 - Coolant temperature display sender - Engine speed sender - Knock sensor 1 - Coolant temperature sender - Simos control unit
| G2 | Coolant temperature display sender |
| G28 | Engine speed sender |
| G61 | Knock sensor 1 |
| G62 | Coolant temperature sender |
| J361 | Simos control unit |
| T3i | 3-pin connector |
| T4y | 4-pin connector |
| T10f | 10-pin connector |
| T80 | 80-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
Wiring Diagram VW JETTA 2007 - Ambient temperature switch - Simos control unit - Injector - cylinder 1 - Injector - cylinder 2 - Injector - cylinder 3 - Injector - cylinder 4 - Activated charcoal filter solenoid valve 1
| E35 | Selector lever for retarder brake |
| F38 | Ambient temperature switch |
| J361 | Simos control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N80 | Activated charcoal filter solenoid valve 1 |
| T10c | 10-pin connector |
| T10d | 10-pin connector |
| T10f | 10-pin connector |
| T17a | 17-pin connector |
| T80 | 80-pin connector |
| E48 | Connection (injectors), in injection system wiring harness |
Wiring Diagram VW JETTA 2007 - Radiator fan thermal switch - Simos control unit - Radiator fan
| F18 | Radiator fan thermal switch |
| J361 | Simos control unit |
| T3b | 3-pin connector |
| T3c | 3-pin connector |
| T10f | 10-pin connector |
| T80 | 80-pin connector |
| V7 | Radiator fan |
| 376 | Earth connection 11, in main wiring harness |
| 673 | Earth point 3, on front of left longitudinal member |
| D161 | Connection (radiator fan run-on), in engine compartment wiring harness |
Wiring Diagram VW JETTA 2007 - Lambda probe - Lambda probe after catalytic converter - Simos control unit
| G39 | Lambda probe |
| G130 | Lambda probe after catalytic converter |
| J361 | Simos control unit |
| T4c | 4-pin connector |
| T4d | 4-pin connector |
| T10c | 10-pin connector |
| T80 | 80-pin connector |
| E30 | Connection (87a), in engine wiring harness |
| * | According to equipment |
Wiring Diagram VW JETTA 2007 - High-pressure sender - Radiator fan control unit - Simos control unit - Activated charcoal filter solenoid valve 1
| G65 | High-pressure sender |
| J293 | Radiator fan control unit |
| J361 | Simos control unit |
| N80 | Activated charcoal filter solenoid valve 1 |
| T3e | 3-pin connector |
| T4z | 4-pin connector |
| T10b | 10-pin connector |
| T10c | 10-pin connector |
| T10f | 10-pin connector |
| T10w | 10-pin connector |
| T80 | 80-pin connector |
| K20 | Positive connection 1 (30), in radiator fan wiring harness |
| L43 | Connection (radiator fan), in air conditioning system/radiator fan wiring harness |
| * | From March 2010 |
| *2 | Only models with diesel engine |
Wiring Diagram VW JETTA 2007 - Brake light switch - Clutch pedal switch - Brake pedal switch - Simos control unit
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| J361 | Simos control unit |
| T4f | 4-pin connector |
| T4h | 4-pin connector |
| T10a | 10-pin connector |
| T80 | 80-pin connector |
| A20 | Positive connection (15a), in dash panel wiring harness |
| B432 | Connection (foot operated parking brake), in main wiring harness |
Wiring Diagram VW JETTA 2007 - Simos control unit
| J361 | Simos control unit |
| T10b | 10-pin connector |
| T10c | 10-pin connector |
| T10d | 10-pin connector |
| T16 | 16-pin connector |
| T80 | 80-pin connector |
| U31 | Diagnostic connection |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), in main wiring harness |
Wiring Diagram VW JETTA 2007 - Fuel gauge sender - Control unit in dash panel insert
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| G22 | Speedometer sender |
| J285 | Control unit in dash panel insert |
| T3m | 3-pin connector |
| T4i | 4-pin connector |
| T10b | 10-pin connector |
| T10c | 10-pin connector |
| T10d | 10-pin connector |
| T10f | 10-pin connector |
| T32 | 32-pin connector |
| 50 | Earth point, on left in luggage compartment |
| 277 | Earth connection 3, in interior wiring harness |
| 639 | Earth point, left A-pillar |
| * | From March 2010 |
| *2 | From August 2008 |
Wiring Diagram VW JETTA 2007 - Control unit in dash panel insert
| J285 | Control unit in dash panel insert |
| T32 | 32-pin connector |
| * | From March 2010 |
| *2 | According to equipment |
| *3 | From August 2008 |
| *4 | Only models with diesel engine |
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