Wiring Diagram VW POLO 2009 - Battery - starter - alternator

| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| S162 | Fuse 1 (30), in battery fuse holder |
| S163 | Fuse 2 (30), in battery fuse holder |
| S178 | Fuse 6 (30), in battery fuse holder |
| T2 | 2-pin connector, near starter |
| T3a | 3-pin connector, grey, on right of bulkhead |
| T6n | 6-pin connector, blue, on right of bulkhead |
| T11a | 11-pin connector, white, on right of bulkhead |
| T12a | 12-pin connector, white, on right of bulkhead |
| T18a | 18-pin connector, brown |
| 11 | Earth point, in battery box |
| B170 | Positive connection 2 (30), in interior wiring harness |
Wiring Diagram VW POLO 2009 - Ignition/starter switch - low heat output relay - high heat output relay - auxiliary air heater element
| D | Ignition/starter switch |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| J519 | Onboard supply control unit |
| S276 | Heater element fuse 1 |
| S277 | Heater element fuse 2 |
| S278 | Heater element fuse 3 |
| T3n | 3-pin connector, behind dash panel |
| T6n | 6-pin connector, blue, on right of bulkhead |
| T18a | 18-pin connector, brown |
| Z35 | Auxiliary air heater element |
| 606 | Earth point, under the centre console near gear stick |
| A2 | Positive connection (15), in dash panel wiring harness |
| A15 | Positive connection (15), in instrument wiring harness |
| A32 | Positive connection (30), in dash panel wiring harness |
| A40 | Positive connection 1 (30), in dash panel wiring harness |
| A52 | Positive connection 2 (30), in dash panel wiring harness |
| A104 | Positive connection 2 (15), in dash panel wiring harness |
| A176 | Connection (auxiliary heater), in dash panel wiring harness |
| B169 | Positive connection 1 (30), in interior wiring harness |
| B170 | Positive connection 2 (30), in interior wiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - fuel pump relay - terminal 30 voltage supply relay - fuses
| J17 | Fuel pump relay |
| J317 | Terminal 30 voltage supply relay |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| SB4 | Fuse 4 on fuse holder B |
| SB14 | Fuse 14 on fuse holder B |
| SB25 | Fuse 25 on fuse holder B |
| SB40 | Fuse 40 on fuse holder B |
| T3a | 3-pin connector, grey, on right of bulkhead |
| T6r | 6-pin connector, brown, on right of bulkhead |
| T11b | 11-pin connector, red, on right of bulkhead |
| T94 | 94-pin connector |
| A101 | Connection 3 (87) in dash panel wiring harness |
| D102 | Connection 2, in engine compartment wiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - brake light switch - clutch pedal switch - accelerator position sender
| F | Brake light switch |
| F8 | Kickdown switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| F60 | Idling speed switch |
| F268 | Auxiliary heating heater element contact switch |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| SB5 | Fuse 5 on fuse holder B |
| T6n | 6-pin connector, blue, on right of bulkhead |
| T10c | 10-pin connector, behind dash panel |
| T11c | 11-pin connector, blue, on right of bulkhead |
| T16c | 16-pin connector |
| T94 | 94-pin connector |
| A89 | Connection 2 (54) in dash panel wiring harness |
| A100 | Connection 2 (87) in dash panel wiring harness |
| D73 | Positive connection (54), in engine compartment wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - coolant temperature sender - fuel temperature sender - temperature sender after particulate filter - hall sender
| E45 | Cruise control system switch |
| G40 | Hall sender |
| G62 | Coolant temperature sender |
| G81 | Fuel temperature sender |
| G527 | Temperature sender after particulate filter |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| T6y | 6-pin connector, brown |
| T11a | 11-pin connector, white, on right of bulkhead |
| T14 | 14-pin connector, on left in engine compartment |
| T41 | 41-pin connector |
| T60 | 60-pin connector |
| T94 | 94-pin connector |
| 316 | Earth connection (sender earth 2) in engine wiring harness |
| A130 | Connection (CCS), in dash panel wiring harness |
| * | Only models with CCS |
Wiring Diagram VW POLO 2009 - Engine control unit - engine speed sender - exhaust gas recirculation valve - intake manifold flap motor
| G28 | Engine speed sender |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| N18 | Exhaust gas recirculation valve |
| T60 | 60-pin connector |
| V157 | Intake manifold flap motor |
| 250 | Earth connection, in diesel engine prewiring harness |
| D141 | Connection (5V) in engine prewiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - data bus diagnostic interface - charge pressure control solenoid valve - heater element for crankcase breather
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| J623 | Engine control unit |
| N75 | Charge pressure control solenoid valve |
| N79 | Heater element for crankcase breather |
| T6n | 6-pin connector, blue, on right of bulkhead |
| T14 | 14-pin connector, on left in engine compartment |
| T16a | 16-pin connector, black |
| T16b | 16-pin connector, diagnostic connector |
| T18a | 18-pin connector, brown |
| T60 | 60-pin connector |
| T94 | 94-pin connector |
| 29 | Earth point, on left in engine compartment, behind battery |
| 131 | Earth connection 2, in engine compartment wiring harness |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - air mass meter - intake manifold pressure sender - intake manifold temperature sender
| G70 | Air mass meter |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| SB17 | Fuse 17 on fuse holder B |
| T5l | 5-pin connector |
| T11b | 11-pin connector, red, on right of bulkhead |
| T94 | 94-pin connector |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| D195 | Connection 1 (5V) in engine compartment wiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - lambda probe - exhaust gas pressure sensor 1 - exhaust temperature sender 1 - exhaust temperature sender 2
| G39 | Lambda probe |
| G235 | Exhaust temperature sender 1 |
| G448 | Exhaust temperature sender 2 |
| G450 | Exhaust gas pressure sensor 1 |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| T6z | 6-pin connector |
| T94 | 94-pin connector |
| Z19 | Lambda probe heater |
| 220 | Earth connection (sender earth), in engine wiring harness |
Wiring Diagram VW POLO 2009 - Engine control unit - automatic glow period control unit - unit injector valve - No. 1 - 2 - 3 cyl. - engine glow plug
| J179 | Automatic glow period control unit |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| N240 | Unit injector valve, No. 1 cyl. |
| N241 | Unit injector valve, No. 2 cyl. |
| N242 | Unit injector valve, No. 3 cyl. |
| Q6 | Engine glow plug |
| T6a | 6-pin connector |
| T14 | 14-pin connector, on left in engine compartment |
| T60 | 60-pin connector |
| T94 | 94-pin connector |
| D140 | Connection (injectors), in engine prewiring harness |
Wiring Diagram VW POLO 2009 - Oil pressure switch - fuel gauge sender - fuel gauge - oil level and oil temperature sender - control unit in dash panel insert
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G6 | Fuel system pressurisation pump |
| G266 | Oil level and oil temperature sender |
| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K29 | Glow period warning lamp |
| K105 | Reserve fuel warning lamp |
| K231 | Diesel particulate filter warning lamp |
| SB7 | Fuse 7 on fuse holder B |
| SB41 | Fuse 41 on fuse holder B |
| T6v | 6-pin connector, green, on right of bulkhead |
| T11b | 11-pin connector, red, on right of bulkhead |
| T14 | 14-pin connector, on left in engine compartment |
| T32a | 32-pin connector, black |
| 81 | Earth connection 1, in dash panel wiring harness |
| 199 | Earth connection 3, in dash panel wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 606 | Earth point, under the centre console near gear stick |
| D103 | Connection 3, in engine compartment wiring harness |
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