Wiring Diagram VW JETTA NF 2017 - Battery - Alternator - Voltage regulator - Onboard supply control unit - Fuse 1 in fuse holder A - Fuse 2 in fuse holder A - Fuse 5 in fuse holder A
| A | Battery |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| SA | Fuse holder A |
| SA1 | Fuse 1 in fuse holder A |
| SA2 | Fuse 2 in fuse holder A |
| SA5 | Fuse 5 in fuse holder A |
| T2ay | 2-pin connector |
| T4 | 4-pin connector |
| T73b | 73-pin connector |
| 12 | Earth point, on left in engine compartment |
| 652 | Earth point, engine and gearbox earth |
| 714 | Earth point on right of engine |
| * | Only models with "High" equipment (AW1) |
Wiring Diagram VW JETTA NF 2017 - Starter - Onboard supply control unit - Terminal 50 voltage supply relay
| B | Starter |
| J519 | Onboard supply control unit |
| J682 | Terminal 50 voltage supply relay |
| T73a | 73-pin connector |
| T73b | 73-pin connector |
| 44 | Earth point, lower part of left A-pillar |
| 366 | Earth connection 1, in main wiring harness |
| 367 | Earth connection 2, in main wiring harness |
| 605 | Earth point, on top end of steering column |
| B170 | Positive connection 2 (30), in interior wiring harness |
| B239 | Positive connection 1 (50), in interior wiring harness |
| B240 | Positive connection 2 (50), in interior wiring harness |
| * | Only models with automatic gearbox |
| *2 | Only models with "High" equipment (AW1) |
Wiring Diagram VW JETTA NF 2017 - Ignition/starter switch - Terminal 30 voltage supply relay - Onboard supply control unit
| D | Ignition/starter switch |
| J317 | Terminal 30 voltage supply relay |
| J519 | Onboard supply control unit |
| T7 | 7-pin connector |
| T73b | 73-pin connector |
| A33 | Connection (75), in dash panel wiring harness |
| B165 | Positive connection 2 (15), in interior wiring harness |
| B169 | Positive connection 1 (30), in interior wiring harness |
| B170 | Positive connection 2 (30), in interior wiring harness |
| B171 | Positive connection 3 (30), in interior wiring harness |
| B188 | Positive connection 5 (30), in interior wiring harness |
Wiring Diagram VW JETTA NF 2017 - Cruise control system switch - Onboard supply control unit
| E45 | Cruise control system switch |
| J519 | Onboard supply control unit |
| T16x | 16-pin connector |
| T73a | 73-pin connector |
| T73b | 73-pin connector |
| A16 | Connection (CCS), in dash panel wiring harness |
| * | Only models with "High" equipment (AW1) |
Wiring Diagram VW JETTA NF 2017 - Fuse holder C - Fuse 30 on fuse holder C - Fuse 32 on fuse holder C - Fuse 33 on fuse holder C
| SC | Fuse holder C |
| SC28 | Fuse 28 on fuse holder C |
| SC30 | Fuse 30 on fuse holder C |
| SC31 | Fuse 31 on fuse holder C |
| SC32 | Fuse 32 on fuse holder C |
| SC33 | Fuse 33 on fuse holder C |
| SC41 | Fuse 41 on fuse holder C |
| B146 | Positive connection 1 (87), in interior wiring harness |
| * | Cross section depends on equipment |
| *2 | Only models with "High" equipment (AW1) |
Wiring Diagram VW JETTA NF 2017 - Fuse holder C - Fuse 3 on fuse holder C - Fuse 20 on fuse holder C - Fuse 27 on fuse holder C - Diagnostic connection
| F138 | Airbag coil connector and return ring with slip ring |
| SC | Fuse holder C |
| SC3 | Fuse 3 on fuse holder C |
| SC20 | Fuse 20 on fuse holder C |
| SC27 | Fuse 27 on fuse holder C |
| T16 | 16-pin connector |
| T16y | 16-pin connector |
| U31 | Diagnostic connection |
| A167 | Positive connection 3 (30a) in dash panel wiring harness |
| B172 | Positive connection 4 (30), in interior wiring harness |
| B218 | Positive connection 6 (30), in interior wiring harness |
| * | According to equipment |
Wiring Diagram VW JETTA NF 2017 - Engine control unit - Fuse holder C - Fuse 4 on fuse holder C - Fuse 6 on fuse holder C - Fuse 24 on fuse holder C
| J623 | Engine control unit |
| SC | Fuse holder C |
| SC4 | Fuse 4 on fuse holder C |
| SC6 | Fuse 6 on fuse holder C |
| SC24 | Fuse 24 on fuse holder C |
| T94 | 94-pin connector |
| B278 | Positive connection 2 (15a) in main wiring harness |
| B302 | Positive connection 6 (30), in main wiring harness |
| D180 | Connection (87a), in engine compartment wiring harness |
Wiring Diagram VW JETTA NF 2017 - Engine control unit - Vacuum pump for brakes
| J623 | Engine control unit |
| T6l | 6-pin connector |
| T94 | 94-pin connector |
| V192 | Vacuum pump for brakes |
| 368 | Earth connection 3, in main wiring harness |
| 641 | Earth point 3, left in engine compartment |
Wiring Diagram VW JETTA NF 2017 - Accelerator position sender - Accelerator position sender 2 - Engine control unit
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| J623 | Engine control unit |
| T6q | 6-pin connector |
| T94 | 94-pin connector |
| B156 | Positive connection (30a), in interior wiring harness |
Wiring Diagram VW JETTA NF 2017 - Fuel gauge sender - Fuel system pressurisation pump - Fuel pump control unit - Engine control unit
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| J538 | Fuel pump control unit |
| J623 | Engine control unit |
| T5 | 5-pin connector |
| T10n | 10-pin connector |
| T94 | 94-pin connector |
| 43 | Earth point, lower part of right A-pillar |
| 199 | Earth connection 3, in dash panel wiring harness |
| 371 | Earth connection 6, in main wiring harness |
| B277 | Positive connection 1 (15a) in main wiring harness |
Wiring Diagram VW JETTA NF 2017 - Lambda probe - Lambda probe after catalytic converter - Engine control unit
| G39 | Lambda probe |
| G130 | Lambda probe after catalytic converter |
| J623 | Engine control unit |
| T4a | 4-pin connector |
| T4b | 4-pin connector |
| T94 | 94-pin connector |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe 1 heater after catalytic converter |
| D189 | Connection (87a) in engine prewiring harness |
Wiring Diagram VW JETTA NF 2017 - Brake light switch - Brake pedal switch - Brake servo pressure sensor - Engine control unit
| F | Brake light switch |
| F47 | Brake pedal switch |
| G294 | Brake servo pressure sensor |
| J623 | Engine control unit |
| T4f | 4-pin connector |
| T4g | 4-pin connector |
| T94 | 94-pin connector |
| 417 | Earth connection 9, in engine compartment wiring harness |
| B350 | Positive connection 1 (87a) in main wiring harness |
| B633 | Connection (brake pedal switch), in main wiring harness |
| * | Cross section depends on equipment |
Wiring Diagram VW JETTA NF 2017 - Hall sender - Coolant temperature sender - Engine control unit - Charge pressure control solenoid valve
| G40 | Hall sender |
| G62 | Coolant temperature sender |
| J623 | Engine control unit |
| N75 | Charge pressure control solenoid valve |
| T2ay | 2-pin connector |
| T2cr | 2-pin connector |
| T3b | 3-pin connector |
| T60 | 60-pin connector |
| 283 | Earth point 2, engine prewiring harness |
Wiring Diagram VW JETTA NF 2017 - Intake manifold sender - Fuel pressure sender - Engine control unit
| GX9 | Intake manifold sender |
| G71 | Intake manifold pressure sender |
| G247 | Fuel pressure sender |
| G299 | Intake air temperature sender 2 |
| G300 | Hall sender 3 |
| J623 | Engine control unit |
| T3aa | 3-pin connector |
| T3bw | 3-pin connector |
| T4bf | 4-pin connector |
| T60 | 60-pin connector |
| 15 | Earth point, on cylinder head |
| 281 | Earth point 1, engine prewiring harness |
| D190 | Connection 3 (5V) in engine prewiring harness |
Wiring Diagram VW JETTA NF 2017 - Throttle valve module - Charge pressure sender - Engine speed sender - Engine control unit
| GX3 | Throttle valve module |
| GX26 | Charge pressure sender |
| G28 | Engine speed sender |
| G31 | Charge pressure sender |
| G42 | Intake air 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 |
| J338 | Throttle valve module |
| J623 | Engine control unit |
| T3v | 3-pin connector |
| T4ah | 4-pin connector |
| T6x | 6-pin connector |
| T60 | 60-pin connector |
| 281 | Earth point 1, engine prewiring harness |
| D102 | Connection 2 in engine compartment wiring harness |
| D103 | Connection 3 in engine compartment wiring harness |
| D106 | Connection 4 in engine compartment wiring harness |
| D107 | Connection 5 in engine compartment wiring harness |
Wiring Diagram VW JETTA NF 2017 - Knock sensor 1 - Engine control unit - Activated charcoal filter solenoid valve 1 - Camshaft control valve 1 - Fuel pressure regulating valve - Exhaust camshaft control valve 1 - Valve for oil pressure control
| G61 | Knock sensor 1 |
| J623 | Engine control unit |
| N80 | Activated charcoal filter solenoid valve 1 |
| N205 | Camshaft control valve 1 |
| N276 | Fuel pressure regulating valve |
| N318 | Exhaust camshaft control valve 1 |
| N428 | Valve for oil pressure control |
| T2cp | 2-pin connector |
| T2cy | 2-pin connector |
| T2cz | 2-pin connector |
| T2da | 2-pin connector |
| T2db | 2-pin connector |
| T2dc | 2-pin connector |
| T14a | 14-pin connector |
| T60 | 60-pin connector |
| D141 | Connection (5V) in engine prewiring harness |
Wiring Diagram VW JETTA NF 2017 - Oil pressure switch for reduced oil pressure - Engine control unit - Injector - cylinder 1 - Injector - cylinder 2 - Injector - cylinder 3 - Injector - cylinder 4 - Charge air cooling pump
| F378 | Oil pressure switch for reduced oil pressure |
| J623 | Engine control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| T1y | Single connector |
| T2cl | 2-pin connector |
| T2cm | 2-pin connector |
| T2cn | 2-pin connector |
| T2co | 2-pin connector |
| T3ce | 3-pin connector |
| T14a | 14-pin connector |
| T60 | 60-pin connector |
| V188 | Charge air cooling pump |
| 85 | Earth connection 1, in engine compartment wiring harness |
Wiring Diagram VW JETTA NF 2017 - Engine 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
| J623 | Engine 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 |
| Q23 | Spark plug 1 |
| Q24 | Spark plug 2 |
| Q25 | Spark plug 3 |
| Q26 | Spark plug 4 |
| T4af | 4-pin connector |
| T4ag | 4-pin connector |
| T4ah | 4-pin connector |
| T4ai | 4-pin connector |
| T14a | 14-pin connector |
| T60 | 60-pin connector |
| 85 | Earth connection 1, in engine compartment wiring harness |
| D25 | Positive connection (15), in engine prewiring harness |
Wiring Diagram VW JETTA NF 2017 - Radiator fan thermal switch - Climatronic control unit - Radiator fan control unit - Radiator fan
| F18 | Radiator fan thermal switch |
| J255 | Climatronic control unit |
| J293 | Radiator fan control unit |
| T3a | 3-pin connector |
| T10 | 10-pin connector |
| T16n | 16-pin connector |
| V7 | Radiator fan |
| 369 | Earth connection 4, in main wiring harness |
| 671 | Earth point 1, on front of left longitudinal member |
| * | Only models with Climatronic |
Wiring Diagram VW JETTA NF 2017 - Oil pressure switch - Coolant shortage indicator sender - Buzzer and gong - Control unit in dash panel insert
| F1 | Oil pressure switch |
| G32 | Coolant shortage indicator sender |
| H3 | Buzzer and gong |
| J285 | Control unit in dash panel insert |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K31 | Cruise control system warning lamp |
| K83 | Exhaust emissions warning lamp |
| T1g | Single connector |
| T2s | 2-pin connector |
| T14a | 14-pin connector |
| T32 | 32-pin connector |
| 410 | Earth connection 1 (sender earth) in main wiring harness |
Wiring Diagram VW JETTA NF 2017 - Fuel gauge - Rev. counter - Speedometer - Multifunction indicator - Control unit in dash panel insert - Trip counter
| G1 | Fuel gauge |
| G5 | Rev. counter |
| G21 | Speedometer |
| J119 | Multifunction indicator |
| J285 | Control unit in dash panel insert |
| K105 | Reserve fuel warning lamp |
| K132 | Electronic power control fault lamp |
| T32 | 32-pin connector |
| Y4 | Trip counter |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), in main wiring harness |
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