Wiring Diagram VW JETTA 2009 - Battery - Onboard supply control unit
| A | Battery |
| C | Alternator |
| J519 | Onboard supply control unit |
| SA1 | Fuse 1 in fuse holder A |
| SB3 | Fuse 3 on fuse holder B |
| SA5 | Fuse 5 in fuse holder A |
| SB6 | Fuse 6 on fuse holder B |
| SB7 | Fuse 7 on fuse holder B |
| SB12 | Fuse 12 on fuse holder B |
| SB16 | Fuse 16 on fuse holder B |
| SB17 | Fuse 17 on fuse holder B |
| SB19 | Fuse 19 on fuse holder B |
| SB26 | Fuse 26 on fuse holder B |
| SB29 | Fuse 29 on fuse holder B |
| SB30 | Fuse 30 on fuse holder B |
| T40 | 40-pin connector |
| T52a | 52-pin connector |
| T52c | 52-pin connector |
| 507 | Threaded connection (30), on battery fuse holder |
| * | According to equipment |
Wiring Diagram VW JETTA 2009 - Airbag control unit - Onboard supply control unit - Fuel pump control unit - Terminal 50 voltage supply relay - Front passenger side airbag deactivated warning lamp - Fuse 1 on fuse holder C - Fuse 2 on fuse holder C - Fuse 3 on fuse holder C - Fuse 4 on fuse holder C - Fuse 13 on fuse holder C - Fuse 14 on fuse holder C - Fuse 15 on fuse holder C - Fuse 17 on fuse holder C - Fuse 24 on fuse holder C - Fuse 32 on fuse holder C - Fuse 42 on fuse holder C - Interior socket - 230 V - 110 V - Positive connection (15) - in dash panel wiring harness - Positive connection 4 (30a) in dash panel wiring harness - Positive connection 1 (30) - in interior wiring harness
| J234 | Airbag control unit |
| J519 | Onboard supply control unit |
| J538 | Fuel pump control unit |
| J682 | Terminal 50 voltage supply relay |
| K145 | Front passenger side airbag deactivated warning lamp |
| SC1 | Fuse 1 on fuse holder C |
| SC2 | Fuse 2 on fuse holder C |
| SC3 | Fuse 3 on fuse holder C |
| SC4 | Fuse 4 on fuse holder C |
| SC13 | Fuse 13 on fuse holder C |
| SC14 | Fuse 14 on fuse holder C |
| SC15 | Fuse 15 on fuse holder C |
| SC17 | Fuse 17 on fuse holder C |
| SC24 | Fuse 24 on fuse holder C |
| SC32 | Fuse 32 on fuse holder C |
| SC42 | Fuse 42 on fuse holder C |
| T3ba | 3-pin connector |
| T4g | 4-pin connector |
| T9b | 9-pin connector |
| T10v | 10-pin connector |
| T52b | 52-pin connector |
| T75 | 75-pin connector |
| U11 | Interior socket, 230 V, 110 V |
| 44 | Earth point, lower part of left A-pillar |
| A2 | Positive connection (15), in dash panel wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| A20 | Positive connection (15a), in dash panel wiring harness |
| A33 | Connection (75), in dash panel wiring harness |
| A168 | Positive connection 4 (30a) in dash panel wiring harness |
| A200 | Positive connection 5 (15a) in dash panel wiring harness |
| B169 | Positive connection 1 (30), in interior wiring harness |
Wiring Diagram VW JETTA 2009 - Voltage regulator - Onboard supply control unit - Left side light bulb - Front left turn signal bulb - Left headlight dipped beam bulb - Left headlight main beam bulb - Fuse 25 on fuse holder C
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| M1 | Left side light bulb |
| M3 | Right side light bulb |
| M5 | Front left turn signal bulb |
| M7 | Front right turn signal bulb |
| M29 | Left headlight dipped beam bulb |
| M30 | Left headlight main beam bulb |
| M31 | Right headlight dipped beam bulb |
| M32 | Right headlight main beam bulb |
| SC25 | Fuse 25 on fuse holder C |
| T10i | 10-pin connector |
| T10j | 10-pin connector |
| T10s | 10-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| 376 | Earth connection 11, in main wiring harness |
| 378 | Earth connection 13, in main wiring harness |
| 655 | Earth point, on left headlight |
| 656 | Earth point, on right headlight |
| A17 | Connection (61), in dash panel wiring harness |
Wiring Diagram VW JETTA 2009 - Light switch - Switch and instrument illumination regulator - Onboard supply control unit - Button illumination bulb
| E1 | Light switch |
| E20 | Switch and instrument illumination regulator |
| J519 | Onboard supply control unit |
| L9 | Light switch illumination bulb |
| L76 | Button illumination bulb |
| T8e | 8-pin connector |
| T10h | 10-pin connector |
| T10s | 10-pin connector |
| T52a | 52-pin connector |
| T52c | 52-pin connector |
| 372 | Earth connection 7, in main wiring harness |
| A167 | Positive connection 3 (30a) in dash panel wiring harness |
Wiring Diagram VW JETTA 2009 - Light switch - Fog light switch - Onboard supply control unit - Light switch illumination bulb - Left LED module for daytime running light and side light - Rear left turn signal bulb - Left brake light bulb - High-level brake light bulb
| E1 | Light switch |
| E7 | Fog light switch |
| J519 | Onboard supply control unit |
| L9 | Light switch illumination bulb |
| L176 | Left LED module for daytime running light and side light |
| M6 | Rear left turn signal bulb |
| M9 | Left brake light bulb |
| M25 | High-level brake light bulb |
| M33 | Front left side marker bulb |
| T4a | 4-pin connector |
| T10h | 10-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| 50 | Earth point, on left in luggage compartment |
| 369 | Earth connection 4, in main wiring harness |
| 372 | Earth connection 7, in main wiring harness |
| A84 | Connection (58L), in dash panel wiring harness |
| B238 | Positive connection 2 (58b), in interior wiring harness |
Wiring Diagram VW JETTA 2009 - Reversing light switch - Onboard supply control unit - Right LED module for daytime running light and side light - Rear right turn signal bulb - Right brake light bulb - Left reversing light bulb - Right reversing light bulb - Number plate light
| F4 | Reversing light switch |
| J519 | Onboard supply control unit |
| L177 | Right LED module for daytime running light and side light |
| M8 | Rear right turn signal bulb |
| M10 | Right brake light bulb |
| M16 | Left reversing light bulb |
| M17 | Right reversing light bulb |
| M34 | Front right side marker bulb |
| T2 | 2-pin connector |
| T4b | 4-pin connector |
| T4F | 4-pin connector |
| T5a | 5-pin connector |
| T5c | 5-pin connector |
| T6 | 6-pin connector |
| T52a | 52-pin connector |
| T52c | 52-pin connector |
| X | Number plate light |
| 86 | Earth connection 1, in rear wiring harness |
| 98 | Earth connection, in rear lid wiring harness |
| 369 | Earth connection 4, in main wiring harness |
| 663 | Earth point, rear right side panel |
| A85 | Connection (58R), in dash panel wiring harness |
Wiring Diagram VW JETTA 2009 - Windscreen wiper switch - Intermittent wiper switch - Tiptronic switch - Onboard supply control unit - Steering column electronics control unit - Driver side turn signal repeater bulb - Front passenger side turn signal repeater bulb
| E | Windscreen wiper switch |
| E22 | Intermittent wiper switch |
| F189 | Tiptronic switch |
| J386 | Driver door control unit |
| J387 | Front passenger door control unit |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| L131 | Driver side turn signal repeater bulb |
| L132 | Front passenger side turn signal repeater bulb |
| T10s | 10-pin connector |
| T16a | 16-pin connector |
| T16d | 16-pin connector |
| T20a | 20-pin connector |
| T20b | 20-pin connector |
| T20d | 20-pin connector |
| T28 | 28-pin connector |
| T28a | 28-pin connector |
| T52c | 52-pin connector |
| 89 | Earth connection 1, in window regulator wiring harness |
| 107 | Earth connection, in external mirror wiring harness |
Wiring Diagram VW JETTA 2009 - Intermittent wiper switch - Intermittent wiper regulator - Cruise control system switch - Cruise control system (CCS) SET button - Steering angle sender - Onboard supply control unit - Steering column electronics control unit
| E22 | Intermittent wiper switch |
| E38 | Intermittent wiper regulator |
| E45 | Cruise control system switch |
| E227 | Cruise control system (CCS) SET button |
| G85 | Steering angle sender |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
Wiring Diagram VW JETTA 2009 - Ignition/starter switch - Turn signal switch - Headlight dipper and flasher switch - Airbag control unit - Multifunction steering wheel control unit - Onboard supply control unit - Steering column electronics control unit
| D | Ignition/starter switch |
| E2 | Turn signal switch |
| E4 | Headlight dipper and flasher switch |
| F138 | Airbag coil connector and return ring with slip ring |
| H | Horn plate |
| J234 | Airbag control unit |
| J453 | Multifunction steering wheel control unit |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| T4k | 4-pin connector |
| T12k | 12-pin connector |
| T75 | 75-pin connector |
Wiring Diagram VW JETTA 2009 - Bonnet contact switch - Onboard supply control unit - Washer pump - Left washer jet heater element - Right washer jet heater element
| F266 | Bonnet contact switch |
| J519 | Onboard supply control unit |
| T2a | 2-pin connector |
| T2t | 2-pin connector |
| T2u | 2-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| V5 | Washer pump |
| Z20 | Left washer jet heater element |
| Z21 | Right washer jet heater element |
| 367 | Earth connection 2, in main wiring harness |
| 382 | Earth connection 17, in main wiring harness |
| 402 | Earth connection (interior light), in interior wiring harness |
| 602 | Earth point, in front left footwell |
| 605 | Earth point, on top end of steering column |
Wiring Diagram VW JETTA 2009 - Treble horn - Bass horn - Wiper motor control unit - Onboard supply control unit - Tank filler flap locking motor - Driver side windscreen wiper motor
| H2 | Treble horn |
| H7 | Bass horn |
| J4 | Dual tone horn relay |
| J400 | Wiper motor control unit |
| J519 | Onboard supply control unit |
| T2n | 2-pin connector |
| T4p | 4-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| V155 | Tank filler flap locking motor |
| V216 | Driver side windscreen wiper motor |
| A90 | Connection (dual tone horn), in dash panel wiring harness |
| B154 | Connection 1 (DCt), in interior wiring harness |
Wiring Diagram VW JETTA 2009 - Onboard supply control unit - Rear left reading light - Rear right reading light - Right centre reading light - Rear interior light
| J519 | Onboard supply control unit |
| T5y | 5-pin connector |
| T6b | 6-pin connector |
| T8d | 8-pin connector |
| T52b | 52-pin connector |
| W1 | Front interior light |
| W11 | Rear left reading light |
| W12 | Rear right reading light |
| W39 | Left centre reading light |
| W40 | Right centre reading light |
| W43 | Rear interior light |
| 347 | Earth connection, in roof wiring harness |
| 459 | Earth connection 15, in interior wiring harness |
| B150 | Positive connection 2 (30a), in interior wiring harness |
| B154 | Connection 1 (DCt), in interior wiring harness |
| B219 | Positive connection 4 (30a), in interior wiring harness |
| B250 | Positive connection, in roof wiring harness |
Wiring Diagram VW JETTA 2009 - Glove compartment light switch - Driver vanity mirror contact switch - Front passenger vanity mirror contact switch - Rear lid lock unit - Onboard supply control unit - Cigarette lighter - Luggage compartment light - Glove compartment light - Front passenger side illuminated vanity mirror - Driver side illuminated vanity mirror
| E26 | Glove compartment light switch |
| F147 | Driver vanity mirror contact switch |
| F148 | Front passenger vanity mirror contact switch |
| F256 | Rear lid lock unit |
| J519 | Onboard supply control unit |
| L28 | Cigarette lighter illumination bulb |
| T3g | 3-pin connector |
| T3r | 3-pin connector |
| T52a | 52-pin connector |
| U1 | Cigarette lighter |
| W3 | Luggage compartment light |
| W6 | Glove compartment light |
| W14 | Front passenger side illuminated vanity mirror |
| W20 | Driver side illuminated vanity mirror |
| 195 | Earth connection, in rear door switch wiring harness |
| 347 | Earth connection, in roof wiring harness |
| 374 | Earth connection 9, in main wiring harness |
| B150 | Positive connection 2 (30a), in interior wiring harness |
| B250 | Positive connection, in roof wiring harness |
| B349 | Connection 2 (75a), in main wiring harness |
Wiring Diagram VW JETTA 2009 - Hazard warning lights button - Brake light switch - Fuel system pressurisation pump - Blocking diode - ABS control unit - Onboard supply control unit - Indicator lamp for hazard warning light - 12 V socket
| E229 | Hazard warning lights button |
| F | Brake light switch |
| G6 | Fuel system pressurisation pump |
| J29 | Blocking diode |
| J104 | ABS control unit |
| J519 | Onboard supply control unit |
| K6 | Indicator lamp for hazard warning light |
| T3j | 3-pin connector |
| T4 | 4-pin connector |
| T4y | 4-pin connector |
| T5b | 5-pin connector |
| T47 | 47-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| U5 | 12 V socket |
| 47 | Earth point, in front right footwell |
| 78 | Earth point, lower part of right B-pillar |
| 374 | Earth connection 9, in main wiring harness |
| 375 | Earth connection 10, in main wiring harness |
| 383 | Earth connection 18, in main wiring harness |
| B131 | Connection (54), in interior wiring harness |
| B349 | Connection 2 (75a), in main wiring harness |
| * | Cross section depends on equipment |
Wiring Diagram VW JETTA 2009 - Tiptronic switch - High-pressure sender - Air conditioning system control unit - Onboard supply control unit - Fresh air blower series resistor with overheating fuse - Front left entry light - Front right entry light
| F189 | Tiptronic switch |
| G65 | High-pressure sender |
| J301 | Air conditioning system control unit |
| J519 | Onboard supply control unit |
| N24 | Fresh air blower series resistor with overheating fuse |
| T2i | 2-pin connector |
| T3c | 3-pin connector |
| T4r | 4-pin connector |
| T5 | 5-pin connector |
| T10k | 10-pin connector |
| T10s | 10-pin connector |
| T20c | 20-pin connector |
| T52b | 52-pin connector |
| V2 | Fresh air blower |
| W31 | Front left entry light |
| W32 | Front right entry light |
| A189 | Positive connection 5 (30a) in dash panel wiring harness |
| L6 | Connection 2, in evaporator housing unit wiring harness |
| R56 | Connection (entry light), in driver door wiring harness |
Wiring Diagram VW JETTA 2009 - Immobiliser reader coil - Handbrake warning switch - Brake fluid level warning contact - Fuel gauge - Front left brake pad wear sender - Onboard supply control unit - Dash panel insert - ABS warning lamp - Airbag warning lamp - Electronic power control fault lamp - ESP and TCS warning lamp - Selector lever lock warning lamp
| D2 | Immobiliser reader coil |
| F9 | Handbrake warning switch |
| F34 | Brake fluid level warning contact |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G34 | Front left brake pad wear sender |
| J285 | Control unit in dash panel insert |
| J362 | Immobiliser control unit |
| J519 | Onboard supply control unit |
| K | Dash panel insert |
| K47 | ABS warning lamp |
| K75 | Airbag warning lamp |
| K132 | Electronic power control fault lamp |
| K155 | ESP and TCS warning lamp |
| K169 | Selector lever lock warning lamp |
| T2v | 2-pin connector |
| T2w | 2-pin connector |
| T2x | 2-pin connector |
| T2y | 2-pin connector |
| T5b | 5-pin connector |
| T32c | 32-pin connector |
| 381 | Earth connection 16, in main wiring harness |
| A23 | Connection (30al), in dash panel wiring harness |
| A199 | Positive connection 4 (15a) in dash panel wiring harness |
Wiring Diagram VW JETTA 2009 - Oil pressure switch - Ambient temperature sensor - Coolant shortage indicator sender - Windscreen washer fluid level sender - Sliding sunroof adjustment control unit - Onboard supply control unit - Dash panel insert - Alternator warning lamp - Cruise control system warning lamp - Oil level warning lamp - Left turn signal warning lamp - Right turn signal warning lamp - Reserve fuel warning lamp - Electromechanical power steering warning lamp - Ignition coil 1 with output stage - 14-pin connector - Earth connection 1 - in engine compartment wiring harness - Earth point for electronically controlled fan
| F1 | Oil pressure switch |
| G17 | Ambient temperature sensor |
| G32 | Coolant shortage indicator sender |
| G33 | Windscreen washer fluid level sender |
| J245 | Sliding sunroof adjustment control unit |
| J519 | Onboard supply control unit |
| K | Dash panel insert |
| K2 | Alternator warning lamp |
| K31 | Cruise control system warning lamp |
| K38 | Oil level warning lamp |
| K65 | Left turn signal warning lamp |
| K94 | Right turn signal warning lamp |
| K105 | Reserve fuel warning lamp |
| K149 | Engine electronics warning lamp |
| K161 | Electromechanical power steering warning lamp |
| N70 | Ignition coil 1 with output stage |
| T2z | 2-pin connector |
| T4af | 4-pin connector |
| T6c | 6-pin connector |
| T14a | 14-pin connector |
| T32c | 32-pin connector |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 410 | Earth connection 1 (sender earth) in main wiring harness |
| 642 | Earth point for electronically controlled fan |
Wiring Diagram VW JETTA 2009 - Onboard supply control unit - Dash panel insert - Oil pressure warning lamp - Seat belt warning system warning lamp - Coolant temperature and coolant shortage warning lamp - Glow period warning lamp - Brake pad warning lamp - Washer fluid level warning lamp - Immobiliser warning lamp - Brake system warning lamp - Door open warning lamp - Bulb failure warning lamp - Bonnet open warning lamp
| J519 | Onboard supply control unit |
| K | Dash panel insert |
| K3 | Oil pressure warning lamp |
| K19 | Seat belt warning system warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K29 | Glow period warning lamp |
| K32 | Brake pad warning lamp |
| K37 | Washer fluid level warning lamp |
| K115 | Immobiliser warning lamp |
| K118 | Brake system warning lamp |
| K166 | Door open warning lamp |
| K170 | Bulb failure warning lamp |
| K171 | Bonnet open warning lamp |
Wiring Diagram VW JETTA 2009 - Onboard supply control unit - Data bus diagnostic interface - Dash panel insert - Main beam warning lamp - Exhaust emissions warning lamp - Fuel tank flap lock warning lamp - Warning lamp for daytime running lights - Tyre Pressure Loss Indicator warning lamp
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| K | Dash panel insert |
| K1 | Main beam warning lamp |
| K83 | Exhaust emissions warning lamp |
| K201 | Fuel tank flap lock warning lamp |
| K205 | Warning lamp for daytime running lights |
| K220 | Tyre Pressure Loss Indicator warning lamp |
| T20 | 20-pin connector |
| T32c | 32-pin connector |
| T52c | 52-pin connector |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
Wiring Diagram VW JETTA 2009 - ABS control unit - Automatic gearbox control unit - Airbag control unit - Onboard supply control unit - Data bus diagnostic interface - Engine control unit
| J104 | ABS control unit |
| J217 | Automatic gearbox control unit |
| J234 | Airbag control unit |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| J623 | Engine control unit |
| T16 | 16-pin connector |
| T20 | 20-pin connector |
| T47 | 47-pin connector |
| T52 | 52-pin connector |
| T52c | 52-pin connector |
| T75 | 75-pin connector |
| T94 | 94-pin connector |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| A192 | Positive connection 3 (15a) 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 |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
Wiring Diagram VW JETTA 2009 - Onboard supply control unit - Aerial - Radio aerial 2
| J9 | Heated rear window relay |
| J519 | Onboard supply control unit |
| J681 | Terminal 15 voltage supply relay 2 |
| R11 | Aerial |
| R93 | Radio aerial 2 |
| R178 | Frequency modulation (FM) frequency filter in negative wire |
| R179 | Frequency modulation (FM) frequency filter in positive wire |
| T9i | 9-pin connector |
| T52b | 52-pin connector |
| Z1 | Heated rear window |
| 51 | Earth point, on right in luggage compartment |
| 61 | Earth point, left C-pillar |
Wiring Diagram VW JETTA 2009 - Onboard supply control unit
| J519 | Onboard supply control unit |
| J680 | Terminal 75 voltage supply relay 1 |
| T9m | 9-pin connector |
| T52b | 52-pin connector |
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