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Wiring Diagram VW POLO 2010 - Battery - starter - alternator - voltage regulator - onboard supply control unit
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| S162 | Fuse 1 (30) in fuse holder on battery |
| S163 | Fuse 2 (30) in fuse holder on battery |
| S178 | Fuse 6 (30) in fuse holder on battery |
| S179 | Fuse 7 (30) in fuse holder on battery |
| S267 | Fuse 9 (30) in fuse holder on battery |
| T1e | Single pin connector, on starter |
| T2r | 2-pin connector, near dual tone horn |
| T2s | 2-pin connector, on alternator |
| T6k | 6-pin connector, in left engine compartment |
| T11b | 11-pin connector, in left engine compartment |
| T18a | 18-pin connector, on onboard supply control unit |
| 1 | Earth strap, battery - body |
| 507 | Screw connection (30), on fuse holder on battery |
| 621 | Earth point, on onboard supply battery |
Wiring Diagram VW POLO 2010 - Ignition/starter switch - onboard supply control unit
| D | Ignition/starter switch |
| E19 | Parking light switch |
| J519 | Onboard supply control unit |
| SA10 | Fuse 10 on fuse holder A |
| T8c | 8-connector, on ignition/starter switch |
| T18a | 18-pin connector, on onboard supply control unit |
| T41a | 41-pin connector, on turn signal switch |
| B162 | Connection (75a), in interior wiring harness |
| B169 | Positive connection 1 (30), in interior wiring harness |
| B172 | Positive connection 4 (30), in interior wiring harness |
Wiring Diagram VW POLO 2010 - Front right speed sensor - front left speed sensor - ABS control unit - onboard supply control unit - front right ABS inlet valve - front right ABS outlet valve
| G45 | Front right speed sensor |
| G47 | Front left speed sensor |
| J104 | ABS control unit |
| J519 | Onboard supply control unit |
| N99 | Front right ABS inlet valve |
| N100 | Front right ABS outlet valve |
| N101 | Front left ABS inlet valve |
| N102 | Front left ABS outlet valve |
| T2bv | 2-pin connector, on front right speed sensor |
| T2bx | 2-pin connector, on front left speed sensor |
| T9a | 9-pin connector, in left engine compartment |
| T18a | 18-pin connector, on onboard supply control unit |
| T38a | 38-pin connector, on ABS control unit |
Wiring Diagram VW POLO 2010 - ABS control unit - ABS return flow pump relay - onboard supply control unit
| J104 | ABS control unit |
| J105 | ABS return flow pump relay |
| J519 | Onboard supply control unit |
| SA23 | Fuse 23 on fuse holder A |
| T9a | 9-pin connector, in left engine compartment |
| T38a | 38-pin connector, on ABS control unit |
| V39 | ABS return flow pump |
| 29 | Earth point, near ABS control unit |
| B492 | Positive connection 3 (15), in interior wiring harness |
Wiring Diagram VW POLO 2010 - ABS control unit - ABS solenoid valve relay - onboard supply control unit - rear right ABS inlet valve - rear left ABS inlet valve - rear right ABS outlet valve
| J104 | ABS control unit |
| J106 | ABS solenoid valve relay |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| N133 | Rear right ABS inlet valve |
| N134 | Rear left ABS inlet valve |
| N135 | Rear right ABS outlet valve |
| N136 | Rear left ABS outlet valve |
| T11b | 11-pin connector, in left engine compartment |
| T11c | 11-pin connector, in left engine compartment |
| T38a | 38-pin connector, on ABS control unit |
| D73 | Positive connection (54), in engine compartment wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
Wiring Diagram VW POLO 2010 - Rear right speed sensor - rear left speed sensor - onboard supply control unit
| G44 | Rear right speed sensor |
| G46 | Rear left speed sensor |
| J519 | Onboard supply control unit |
| SA26 | Fuse 26 on fuse holder A |
| SA27 | Fuse 27 on fuse holder A |
| SA29 | Fuse 29 on fuse holder A |
| T2bj | 2-pin connector, on rear left speed sensor |
| T2bk | 2-pin connector, on rear right speed sensor |
| T3c | 3-pin connector, in left engine compartment |
| T16e | 16-pin connector, near relay station, self-diagnosis connection |
| B188 | Positive connection 5 (30), in interior wiring harness |
| B231 | Positive connection 5 (30a), in interior wiring harness |
| B510 | Connection 1 (rear right speed sensor), in interior wiring harness |
| B511 | Connection 2 (rear right speed sensor), in interior wiring harness |
| B512 | Connection 1 (rear left speed sensor), in interior wiring harness |
| B513 | Connection 2 (rear left speed sensor), in interior wiring harness |
Wiring Diagram VW POLO 2010 - Brake light switch - brake pedal switch - onboard supply control unit
| F | Brake light switch |
| F47 | Brake pedal switch |
| J111 | Brake light relay |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| SA4 | Fuse 4 on fuse holder A |
| SA16 | Fuse 16 on fuse holder A |
| SA20 | Fuse 20 on fuse holder A |
| SA32 | Fuse 32 on fuse holder A |
| T4b | 4-pin connector, on brake light switch |
| T10f | 10-pin connector, on brake light relay |
| T11c | 11-pin connector, in left engine compartment |
| B131 | Connection (54), in interior wiring harness |
| B149 | Positive connection 2 (15a), in interior wiring harness |
| B157 | Positive connection 3 (15a), in interior wiring harness |
| B163 | Positive connection 1 (15), in interior wiring harness |
| B165 | Positive connection 2 (15), in interior wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
Wiring Diagram VW POLO 2010 - Handbrake warning switch - control unit in dash panel insert - ABS warning lamp - tyre pressure monitor warning lamp
| F9 | Handbrake warning switch |
| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| K | Dash panel insert |
| K47 | ABS warning lamp |
| K220 | Tyre pressure monitor warning lamp |
| T2b | 2-pin connector, on handbrake warning switch |
| T8a | 8-connector, on dash panel insert |
| T16b | 16-pin connector, on onboard supply control unit |
| T32a | 32-pin connector, on dash panel insert |
| B229 | Connection (high bus), in interior wiring harness |
| B230 | Connection (low bus), in interior wiring harness |
Wiring Diagram VW POLO 2010 - X-contact relief relay - onboard supply control unit
| E1 | Light switch |
| J59 | X-contact relief relay |
| J519 | Onboard supply control unit |
| T5d | 5-pin connector, on onboard supply control unit |
| T6o | 6-pin connector, on X-contact relief relay |
| T16b | 16-pin connector, on onboard supply control unit |
| T16e | 16-pin connector, near relay station, self-diagnosis connection |
| T17a | 17-pin connector, on light switch |
| T18a | 18-pin connector, on onboard supply control unit |
| 42 | Earth point, next to steering column |
| 238 | Earth connection 1, in interior wiring harness |
| 249 | Earth connection 2, in interior wiring harness |
| 278 | Earth connection 4, in interior wiring harness |
| 279 | Earth connection 5, in interior wiring harness |
| 284 | Earth connection 6, in interior wiring harness |
| 285 | Earth connection 7, in interior wiring harness |
| 606 | Earth point, under the centre console near selector lever |
| B159 | Connection (diagnosis), in interior wiring harness |
| B491 | Positive connection (75), in interior wiring harness |
| B493 | Connection (75x), in interior wiring harness |
VW POLO 2010 Engine control unit (80-pin) J623
| – | near battery -arrow- |
| Designation of connector: |
| A - | Engine control unit -J623- |
| B/C - | 80-pin connector, on engine control unit -T80a- |
|
| Designation of connector: |
| A - | Engine control unit -J623- |
| B/C - | 121-pin connector, on engine control unit -T121a- |
|
| Designation of connector: |
| A - | Radiator fan control unit -J293- |
| B - | 6-pin connector, on radiator fan control unit -T6ak- |
| C - | 4-pin connector, on radiator fan control unit -T4aa- |
|
| Designation of connector: |
| A - | Automatic gearbox control unit -J217- |
| B - | 68-pin connector, on automatic gearbox control unit -T68a- |
|
| Designation of connector: |
| A - | Automatic gearbox control unit -J217- |
| B/C - | 80-pin connector, on automatic gearbox control unit -T80b- |
|
| Designation of connector: |
| A - | Driver door control unit -J386- |
| B - | 6-pin connector, on control unit driver door -T6y- |
| C - | 8-pin connector, on control unit driver door -T8g- |
|
| Designation of connector: |
| A - | Front passenger door control unit -J387- |
| B - | 8-pin connector, on control unit front passenger door -T8i- |
|
| Designation of connector: |
| A - | Rear left door control unit -J388- |
| B - | 8-pin connector, on door control unit, rear left -T8k- |
|
| Designation of connector: |
| A - | Rear right door control unit -J389- |
| B - | 8-pin connector, on door control unit, rear left -T8l- |
|
| Designation of connector: |
| A - | Heater control unit -J162- |
| B - | 5-pin connector, on heater control unit -Vazio- |
| C - | 16-pin connector, on heater control unit -T16h- |
| D - | 18-pin connector, on heater control unit -Vazio- |
|
| Designation of connector: |
| A - | Air conditioning system control unit -J301- |
| B - | 5-pin connector, on air conditioning system control unit -T5l/T5m- |
| C - | 16-pin connector, on heater control unit -T16c- |
| D - | 2-pin connector, on heater control unit -T2bo- |
|
| Designation of connector: |
| A - | Climatronic control unit -J255- |
| B - | 20-pin connector, on Climatronic control unit -T20a- |
| C - | 12-pin connector, on Climatronic control unit -T12j- |
| D - | 16-pin connector, on Climatronic control unit -T16g- |
|
| Designation of connector: |
| A - | Convenience system central control unit -J393- |
| B - | 12-pin connector, on convenience system central control unit -T12b- |
| C - | 23-pin connector, on convenience system central control unit -T23a- |
| D - | 12-pin connector, on convenience system central control unit -T12c- |
|
| Designation of connector: |
| A - | Operating unit in multifunction steering wheel -E221- |
| B - | 6-pin connector, on multifunction steering wheel control unit -T6be- |
|
| Designation of connector: |
| A - | Control unit with display in dash panel insert -J285- |
| B - | 32-pin connector, on control unit with display in dash panel insert -T32a- |
| 1 - | Immobilizer reader coil |
| 2 - | Terminal 56al |
| 3 - | Terminal 56bl |
| 4 - | Vacant |
| 5 - | Speed signal |
| 6 - | Speedometer sender |
| 7 - | Terminal CAN-Bus low |
| 8 - | Terminal CAN-Bus high |
| 9 - | Terminal CAN-Bus high (convenience) |
| 10 - | Terminal CAN-Bus low (convenience) |
| 11 - | Parking light switch |
| - | Turn signal switch |
| - | Headlight dipper/flasher switch |
| - | Intermittent wiper switch |
| - | Multifunction display call-up button |
| 12 - | Parking light switch |
| - | Turn signal switch |
| - | Headlight dipper/flasher switch |
| - | Intermittent wiper switch |
| - | Multifunction display call-up button |
| 13 - | Vacant |
| 14 - | Vacant |
| 15 - | Fuel gauge sender |
| 16 - | Coolant shortage indicator sender |
| 17 - | Immobilizer reader coil |
| 18 - | Rear fog light |
| 19 - | Vacant |
| 20 - | Front left belt switch |
| 21 - | Handbrake warning switch |
| 22 - | Oil level warning contact |
| 23 - | Oil pressure switch |
| 24 - | Onboard supply control unit |
| 25 - | Vacant |
| 26 - | Vacant |
| 27 - | Parking light switch |
| - | Turn signal switch |
| - | Headlight dipper/flasher switch |
| - | Intermittent wiper switch |
| - | Multifunction display call-up button |
| 28 - | Vacant |
| 29 - | Vacant |
| 30 - | Windscreen washer fluid level sender |
| 31 - | Ambient temperature sensor, sensor earth |
| 32 - | Terminal 31 |
| C - | 8-pin connector, on control unit with display in dash panel insert -T8a- |
| 1 - | Brake wear indicator |
| 2 - | Vacant |
| 3 - | Vacant |
| 4 - | Terminal 58R, right parking light |
| 5 - | Terminal 15a |
| 6 - | Terminal 58L, left parking light |
| 7 - | Terminal 30a |
| 8 - | Terminal 31 |
|
| Designation of connector: |
| A - | Airbag control unit -J234- |
| B - | 50-pin connector, on airbag control unit -T50a- |
|
| Designation of connector: |
| A - | ABS control unit -J104- |
| B - | 38-pin connector, on ABS control unit -T38a- |
|
| Designation of connector: |
| A - | ABS control unit -J104- |
| B - | 42-pin connector, on ABS control unit -T42a- |
|
| Designation of connector: |
| A - | Parking aid control unit -J446- |
| B - | 12-pin connector, on parking aid control unit -T12f- |
| C - | 16-pin connector, on parking aid control unit -T16a- |
|
| Designation of connector: |
| A - | Parking aid control unit -J446- |
| B - | 12-pin connector, on parking aid control unit -T12f- |
| C - | 16-pin connector, on parking aid control unit -T16a- |
|
| Designation of connector: |
| A - | Control and regulating unit for air conditioning system -J127- |
| B - | 6-pin connector, on fresh air blower control unit -T6al- |
|
| Designation of connector: |
| A - | Control unit for interactive system -J879- |
| B - | 16-pin connector, on control unit for interactive system -T16d- |
|
| Designation of connector: |
| A - | Control unit for lighting and wiper functions -J917- |
| B - | 12-pin connector, on control unit for lighting and wiper functions -T12k- |
| C - | 16-pin connector, on control unit for lighting and wiper functions -T16i- |
|
| Designation of connector: |
| A - | Power steering control unit -J500- |
| B - | 3-pin connector, on heated driver seat control unit -Vazio- |
| C - | 2-pin connector, on heated driver seat control unit -T2ct- |
| D - | 4-pin connector, on heated driver seat control unit -T4ai- |
|
| Designation of connector: |
| A - | Sliding sunroof adjustment control unit -J245- |
| B - | 6-pin connector, on sliding sunroof adjustment control unit -T6bb- |
| C - | 6-pin connector, on sliding sunroof adjustment regulator -T6bc- |
|
| Designation of connector: |
| A - | Mirror memory control unit -J267- |
| B - | 18-pin connector, on mirror memory control unit -T18c- |
|
| Designation of connector: |
| A - | Onboard supply control unit -J519- |
| B - | 16-pin connector, on onboard supply control unit -T16b- |
| 1 - | Vacant |
| 2 - | Terminal CAN-Bus low |
| 3 - | Terminal CAN-Bus low |
| 4 - | Vacant |
| 5 - | Terminal CAN-Bus high |
| 6 - | Terminal CAN-Bus high |
| 7 - | Intermittent wiper switch |
| 8 - | Intermittent wiper switch |
| 9 - | Fuel supply relay |
| 10 - | Left turn signal switch |
| 11 - | Control unit with display in dash panel insert |
| 12 - | Turn signal switch |
| 13 - | Anti-theft alarm and vermin repellent system contact switch |
| 14 - | Right turn signal |
| 15 - | Terminal 30a |
| 16 - | Left turn signal |
| C - | 6-pin connector, on onboard supply control unit -T6q- |
| 1 - | Vacant |
| 2 - | Rear lid release switch |
| 3 - | Luggage compartment light switch |
| 4 - | Luggage compartment light switch |
| - | Luggage compartment light |
| 5 - | Rear lid remote release button |
| 6 - | Rear lid release switch |
| D - | 18-pin connector, on onboard supply control unit -T18a- |
| 1 - | Diagnosis |
| 2 - | Terminal 75a |
| 3 - | Rear right central locking lock unit |
| 4 - | Front passenger side central locking lock unit |
| 5 - | Terminal 30 |
| 6 - | Driver door open switch |
| 7 - | Vacant |
| 8 - | Terminal 31 |
| 9 - | Alternator |
| - | Voltage regulator |
| 10 - | Vacant |
| 11 - | terminal X |
| 12 - | Terminal 15 |
| 13 - | Rear left central locking lock unit |
| 14 - | Ignition/starter switch |
| 15 - | Terminal 53c |
| 16 - | Windscreen wiper motor |
| 17 - | Horn activation contact ring |
| 18 - | Wiper switch |
| E - | 6-pin connector, on onboard supply control unit -Vazio- |
| F - | 18-pin connector, on onboard supply control unit -T18b- |
| 1 - | Terminal 31 (Export models only) |
| - | vacant (Brazil models only) |
| 2 - | Vacant |
| 3 - | Vacant |
| 4 - | Vacant |
| 5 - | Vacant |
| 6 - | Vacant |
| 7 - | Rain sensor |
| 8 - | Rain sensor |
| 9 - | Terminal CAN-Bus low (convenience) |
| 10 - | Vacant |
| 11 - | Rain sensor |
| 12 - | Terminal CAN-Bus high (convenience) |
| 13 - | Terminal 31 (Export models only) |
| - | vacant (Brazil models only) |
| 14 - | Vacant |
| 15 - | Vacant |
| 16 - | Vacant |
| 17 - | Starter motor relay |
| 18 - | Vacant |
| G - | 6-pin connector, on onboard supply control unit -T6c- |
| 1 - | Vacant |
| 2 - | Terminal 58d |
| 3 - | Hazard warning light switch illumination |
| 4 - | Heated rear window switch |
| 5 - | Heated rear window switch illumination bulb |
| 6 - | Hazard warning lights button |
| H - | 5-pin connector, on onboard supply control unit -T5f- |
| 1 - | Terminal 31 |
| 2 - | Horn or dual tone horn |
| 3 - | Terminal 30a |
| 4 - | Heated rear window |
| 5 - | Terminal 30a |
| I - | 5-pin connector, on onboard supply control unit -T5d- |
| 1 - | Interior lights |
| 2 - | Terminal 31a |
| 3 - | Terminal 30a |
| 4 - | Windscreen wiper motor |
| 5 - | Windscreen wiper motor |
| J - | 6-pin connector, on onboard supply control unit -T6t- |
| 1 - | Mirror adjustment change-over switch |
| - | Mirror adjustment switch |
| 2 - | Driver side heated exterior mirror |
| 3 - | Vacant |
| 4 - | Front passenger side heated exterior mirror |
| 5 - | Vacant |
| 6 - | Terminal 30a |
| K - | 6-pin connector, on onboard supply control unit -T6m- |
| 1 - | Terminal 30a |
| 2 - | Vacant |
| 3 - | Vacant |
| 4 - | Terminal 30a |
| 5 - | Vacant |
| 6 - | Terminal 30 |
| L - | 6-pin connector, on onboard supply control unit -T6u- |
| 1 - | Terminal 15a |
| 2 - | Reversing light |
| 3 - | Vacant |
| 4 - | Vacant |
| 5 - | Rear lid release motor |
| 6 - | Terminal 30a |
|
| Designation of connector: |
| A - | Mirror memory control unit -J347- |
| B - | 8-pin connector, on mirror memory control unit -T8d- |