Wiring Diagram VW POLO 2007 - Radiator fan control unit - alternator - voltage regulator - starter - radiator fan - radiator fan thermal switch

| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| F18 | Radiator fan thermal switch |
| J293 | Radiator fan control unit |
| J519 | Onboard supply control unit |
| S162 | Fuse -1- (30), in battery fuse holder |
| S176 | Fuse -4- (30), in battery fuse holder |
| S177 | Fuse -5- (30), in battery fuse holder |
| S180 | Fuse -8- (30), in battery fuse holder |
| T2 | 2-pin connector, near starter |
| T2v | 2-pin connector |
| T3j | 3-pin connector |
| T4t | 4-pin connector |
| T6n | 6-pin connector, blue, on bulkhead |
| T6v | 6-pin connector |
| T11a | 11-pin connector, white, on left of bulkhead |
| T18a | 18-pin connector, brown |
| V7 | Radiator fan |
| 1 | Earth strap, battery - body |
| 12 | Earth point, on left in engine compartment |
| 108 | Earth connection -2-, in front left wiring harness |
| D167 | Connection (radiator fan 1st speed), in engine compartment wiring harness |
| D168 | Connection (radiator fan 2nd speed), in engine compartment wiring harness |
| * | Does not apply to models with an air conditioning system ⇒ respective air conditioning system current flow diagram |
Wiring Diagram VW POLO 2007 - Onboard power supply control unit - diesel direct injection system control unit - radiator fan control unit - radiator fan - right - glow plug relay - glow plug (engine)
| J52 | Glow plug relay |
| J248 | Diesel direct injection system control unit |
| J293 | Radiator fan control unit |
| J519 | Vehicle voltage control unit |
| T2g | 2-pin connector |
| T3u | 3-pin connector |
| T4t | 4-pin connector |
| T6w | 6-pin connector, grey, left on end wall |
| T11a | 11-pin connector, white, on left end wall |
| T121 | 121-pin connector |
| Q6 | Glow plugs (engine) |
| V35 | Radiator fan, right |
| 108 | Earth connection -2-, in front left wiring harness |
| A56 | Positive (+) connection -2- (30), in instruments wiring harness |
| A152 | Connection -5- (87), in dash panel wiring harness |
| D78 | Positive (+) connection -1- (30a), in engine compartment wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
| D167 | Connection (radiator fan stage I), in engine compartment wiring harness |
| D168 | Connection (radiator fan stage II), in engine compartment wiring harness |
| * | Does not apply to models with air conditioner |
Wiring Diagram VW POLO 2007 - Diesel direct injection system control unit - kick-down switch - clutch pedal switch - brake pedal switch - idling switch - coolant temperature sender - accelerator pedal position sender - fuel temperature sender
| F | Brake light switch |
| F8 | Kick-down switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch |
| F60 | Idling switch |
| G62 | Coolant temperature sender |
| G79 | Accelerator pedal position sender |
| G81 | Fuel temperature sender |
| J248 | Diesel direct injection system control unit |
| J519 | Onboard supply control unit |
| SB26 | Fuse -26- on fuse holder |
| T4d | 4-pin connector |
| T4h | 4-pin connector |
| T6c | 6-pin connector, blue, on left of bulkhead |
| T6n | 6-pin connector |
| T11b | 11-pin connector, red, on left of bulkhead |
| T11c | 11-pin connector, blue, on left of bulkhead |
| T121 | 121-pin connector |
| A89 | Positive connection -4-(30), 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 |
| * | Only models up to May 2002 |
| ** | Only models from May 2002 |
Wiring Diagram VW POLO 2007 - Hall sender - intake manifold pressure sender - intake manifold temperature sender - exhaust gas recirculation valve - charge pressure control solenoid valve - intake manifold flap motor
Wiring Diagram VW POLO 2007 - Onboard power supply control unit - diesel direct injection system control unit - engine speed sender - air mass meter - Data bus diagnostic interface - diagnosis connection
| G28 | Engine speed sender |
| G70 | Air mass meter |
| J248 | Diesel direct injection system control unit |
| J519 | Onboard power supply control unit |
| J533 | Data bus diagnostic interface |
| SB5 | Fuse -5- on fuse box |
| SB17 | Fuse -17- on fuse box |
| T3m | 3-pin connector |
| T5l | 5-pin connector |
| T6n | 6-pin connector, blue |
| T11a | 11-pin connector, white, on end wall |
| T11b | 11-pin connector, red, on end wall |
| T14 | 14-pin connector, left in engine compartment |
| T16a | 16-pin connector, brown |
| T16b | 16-pin connector, diagnosis connection |
| T18a | 18-pin connector, brown |
| T121 | 121-pin connector |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| F27 | Connection (screening), in diesel direct injection system wiring harness |
| * | From May 2002 |
| ** | Only engine codese ATD |
Wiring Diagram VW POLO 2007 - Onboard power supply control unit - diesel direct injection system control unit - unit injector solenoid valves (cylinder 1-4)
| E45 | Cruise control system switch |
| F268 | Additional heater, heater element contact switch |
| J248 | Diesel direct injection system control unit |
| J519 | Vehicle voltage control unit |
| N240 | Unit injector solenoid valve, No. 1 cyl. |
| N241 | Unit injector solenoid valve, No. 2 cyl. |
| N242 | Unit injector solenoid valve, No. 3 cyl. |
| N243 | Unit injector solenoid valve, No. 4 cyl. |
| T8o | 8-pin connector |
| T10c | 10-pin connector, behind dash panel, right |
| T11a | 11-pin connector, white, on left end wall |
| T11c | 11-pin connector, blue, on left end wall |
| T16c | 16-pin connector |
| T41 | 41-pin connector |
| T121 | 121-pin connector |
| * | Only models with cruise control system |
Wiring Diagram VW POLO 2007 - Onboard power supply control unit - multi-function unit control unit - low heat output relay - high heat output relay - heater element fuse - additional heating heater element
Wiring Diagram VW POLO 2007 - Diesel direct injection system relay - fuel pump relay
Wiring Diagram VW POLO 2007 - Control unit with display in dash panel insert - oil pressure switch - fuel pump - fuel gauge - warning lamps - fuel gauge sender
Wiring Diagram VW POLO 2007 - Heater element (crankcase breather) - speedometer sender - oil level/oil temperature sender
| D | Ignition/starter switch |
| G22 | Speedometer sender |
| G266 | Oil level/oil temperature sender |
| J519 | Onboard supply control unit |
| N79 | Heater element (crankcase breather) |
| SB7 | Fuse -7- on fuse holder |
| T3l | 3-pin connector, on speedometer sender |
| T11a | 11-pin connector, white, on left of bulkhead |
| T11b | 11-pin connector, red, on left of bulkhead |
| T14 | 14-pin connector, on left in engine compartment |
| 3 | Earth strap, engine - body |
| 14 | Earth point, on gearbox |
| 250 | Earth connection, in diesel engine pre-wiring harness |
| A2 | Positive connection (15), in dash panel wiring harness |
| A15 | Positive connection (15), in instruments wiring harness |
| A139 | Connection -3- (15), in dash panel wiring harness |
| * | From November 2002 applies only to models not fitted with ABS |
VW POLO 2007 Overview of all control units
Overview of all control units | | |
| 1 - | ABS control unit with EDL -J104- |
| 2 - | Automatic gearbox control unit -J217- |
| 3 - | Glow plug activation control unit -J370- |
| 3 - | Automatic glow period control unit -J179- |
| 4 - | Power steering control unit -J500- |
| 5 - | Radiator fan control unit -J293- |
| 6 - | Engine control units -J248- , -J623- , -J361- , -J220- , -J687- , -J537- |
| 7 - | NOx sensor control unit -J583- |
| Polo | Fitting Locations | No. 805 / 2 |
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| On right of bulkhead in engine compartment ⇒ -1- | | |
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| Polo | Fitting Locations | No. 805 / 3 |
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| Connectors for ABS control unit -J104- |
| Polo | Fitting Locations | No. 805 / 4 |
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| Connectors for ABS control unit -J104- |
| Polo | Fitting Locations | No. 805 / 5 |
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VW POLO 2007 Glow plug activation control unit -J370- / automatic glow period control unit -J179- | | front left in engine compartment | | |
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| Polo | Fitting Locations | No. 805 / 6 |
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VW POLO 2007 Automatic gearbox control unit -J217-Automatic gearbox control unit -J217- | | in engine compartment before battery | | |
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| Polo | Fitting Locations | No. 805 / 7 |
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| Connectors for automatic gearbox control unit -J217- |
| A - | Automatic gearbox control unit -J217- |
| Polo | Fitting Locations | No. 805 / 8 |
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VW POLO 2007 Power steering control unit -J500-Power steering control unit -J500- | | In engine compartment, on front of left longitudinal member | | 3 - | Connector, depends on equipment -T3s- or -T4s- | | |
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| Polo | Fitting Locations | No. 805 / 9 |
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VW POLO 2007 Radiator fan control unit -J293-Radiator fan control unit -J293- | | Front left in engine compartment ⇒ -arrow A- | | |
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| Polo | Fitting Locations | No. 805 / 10 |
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VW POLO 2007 NOx sensor control unit -J583-NOx sensor control unit -J583- | | Under vehicle, near catalytic converter ⇒ -arrow- | | A - | 10-pin connector, black (T10) | | B - | 14-pin connector, black (T14x) | | |
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| Polo | Fitting Locations | No. 805 / 11 |
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VW POLO 2007 Engine control unit - J...Engine control unit - J... | | On left of bulkhead ⇒ -arrow- | | |
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| Polo | Fitting Locations | No. 805 / 12 |
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| Engine control unit - J... | Note: | Note: see respective current flow diagram for engine control unit. | | | |
Note:
| t | Note Connector T80 comprises a 52-pin and a 28-pin connector. |
| t | * Depending on equipment |
| t | Connector 121, see 207/12 |
| t | Connector T94 and T60, see 207/13 |
| Polo | Fitting Locations | No. 805 / 13 |
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| Engine control unit - J... | Note: | Note: see respective current flow diagram for engine control unit. | | | |
| A - | Engine control unit, 121-pin |
Note:
| Note Connector T121 comprises an 81-pin connector and a 40-pin connector. |
| Polo | Fitting Locations | No. 805 / 14 |
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| Engine control unit - J... | Note: | Note: see respective current flow diagram for engine control unit. | | | |
| A - | Engine control unit, 154-pin |
Note:
| Note Connector T154 comprises a 94-pin and a 60-pin connector. |