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Wiring Diagram VW POLO 2013 - Fresh air blower switch - Air conditioning system control unit - Fresh air blower series resistor with overheating fuse - Fresh air blower - Fresh air and air recirculation flap control motor
| E9 | Fresh air blower switch |
| G56 | Dash panel temperature sensor |
| J301 | Air conditioning system control unit |
| N24 | Fresh air blower series resistor with overheating fuse |
| SB22 | Fuse 22 on fuse holder B |
| SB40 | Fuse 40 on fuse holder B |
| T2ek | 2-pin connector |
| T4ah | 4-pin connector |
| T5l | 5-pin connector |
| T6ae | 6-pin connector |
| T10c | 10-pin connector |
| T16h | 16-pin connector |
| T18 | 18-pin connector |
| V2 | Fresh air blower |
| V42 | Temperature sensor blower |
| V154 | Fresh air and air recirculation flap control motor |
| B150 | Positive connection 2 (30a), in interior wiring harness |
| L66 | Connection, in heater blower wiring harness |
| * | From August 2011 |
Wiring Diagram VW POLO 2013 - Evaporator output temperature sender - Air conditioning system relay - Air conditioning system control unit
| E30 | Air conditioning system switch |
| E50 | Defroster operation switch |
| E159 | Fresh air and air recirculation flap switch |
| G263 | Evaporator output temperature sender |
| G267 | Potentiometer for temperature selection rotary knob |
| J32 | Air conditioning system relay |
| J301 | Air conditioning system control unit |
| K84 | Air conditioning system warning lamp |
| K114 | Fresh air and air recirculation warning lamp |
| L16 | Fresh air regulator illumination bulb |
| SB25 | Fuse 25 on fuse holder B |
| T2em | 2-pin connector |
| T9l | 9-pin connector |
| T16h | 16-pin connector |
| T18 | 18-pin connector |
| 80 | Earth connection 1, in dash panel wiring harness |
| 81 | Earth connection 1, in dash panel wiring harness |
| 199 | Earth connection 3, in dash panel wiring harness |
| A20 | Positive connection (15a), in dash panel wiring harness |
Wiring Diagram VW POLO 2013 - High-pressure sender - Air conditioning system control unit - Engine control unit
| G65 | High-pressure sender |
| J301 | Air conditioning system control unit |
| J623 | Engine control unit |
| T3ag | 3-pin connector |
| T16h | 16-pin connector |
| T80 | 80-pin connector |
| T94 | 94-pin connector |
| T121 | 121-pin connector |
| 97 | Earth connection 1, in air conditioning system wiring harness |
| 110 | Earth connection 2, in dash panel wiring harness |
| 439 | Earth connection 3, in dash panel wiring harness |
| 605 | Earth point, on top end of steering column |
| D155 | Connection 1 (air conditioning system pressure switch), in engine compartment wiring harness |
| * | see applicable current flow diagram for engine |
| *2 | From August 2011 |
Wiring Diagram VW POLO 2013 - Air conditioning system control unit - Onboard supply control unit - Engine control unit
| J301 | Air conditioning system control unit |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| T16b | 16-pin connector |
| T16h | 16-pin connector |
| T73b | 73-pin connector |
| T80 | 80-pin connector |
| T94 | 94-pin connector |
| T121 | 121-pin connector |
| U31 | Diagnostic connection |
| A19 | Connection (58d), in dash panel wiring harness |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| * | According to equipment |
| *2 | Only models with diesel engine |
| *3 | gradual introduction |
| *4 | Up to November 2010 |
| *5 | Gradually discontinued |
| *6 | see applicable current flow diagram for engine |
| *7 | From August 2011 |
Wiring Diagram VW POLO 2013 - Radiator fan control unit - Air conditioner compressor regulating valve - Connection (87a) - in engine compartment wiring harness
| J293 | Radiator fan control unit |
| N280 | Air conditioner compressor regulating valve |
| SC2 | Fuse 2 on fuse holder C |
| SA6 | Fuse 6 in fuse holder A |
| SB33 | Fuse 33 on fuse holder B |
| SB55 | Fuse 55 on fuse holder B |
| T1 | Single connector |
| T2eo | 2-pin connector |
| T2ep | 2-pin connector |
| T4ab | 4-pin connector |
| T8 | 8-pin connector |
| V7 | Radiator fan |
| 82 | Earth connection 1, in front left wiring harness |
| 135 | Earth connection 2, in dash panel wiring harness |
| D180 | Connection (87a), in engine compartment wiring harness |
| D183 | Connection 4 (87a) in engine compartment wiring harness |
| * | Only models with diesel engine |
| *2 | Only models with petrol engine |
| *3 | According to equipment |
| *4 | Up to November 2010 |
| *5 | see applicable current flow diagram for engine |
| *6 | From November 2010 |
VW POLO 2013 Overview of control units
| 1 - | Airbag control unit -J234- |
| q | Connector assignment |
| 2 - | Onboard supply control unit -J519- |
| q | Connector assignment |
| 3 - | Control unit in dash panel insert -J285- |
| q | Connector assignment |
| 4 - | Driver door control unit -J386- |
| q | Connector assignment |
| 5 - | Rear right door control unit -J389- |
| q | Connector assignment |
| q | Connector assignment |
| 7 - | Rear left door control unit -J388- |
| q | Connector assignment |
| 8 - | Front passenger door control unit -J387- |
| q | Connector assignment |
| 9 - | Radio -R- |
| 9 - | Air conditioning system control unit -J301- |
| 11 - | Engine control unit -J623- |
| q | Connector assignment |
| 11 - | Power steering sensor -G250- |
| q | Fitting location: on left in engine compartment, behind battery |
| q | Connector assignment |
| 13 - | Power steering control unit -J500- |
| 14 - | Radiator fan control unit -J293- |
| q | Fitting location from May 2010 |
| 14 - | Automatic glow period control unit -J179- |
| Connector assignment: |
| 1 - | Airbag control unit -J234- |
| 2 - | 50-pin connector -T50- |
| Onboard supply control unit -J519- |
| Fitting location: |
| 1 - | Onboard supply control unit -J519- |
| Connector assignment: |
| A - | 73-pin connector -T73a- |
| B - | 73-pin connector -T73b- |
| Description of signal onboard supply control unit -J519- |
| Connector | Pin | Terminal |
| A | 1 | - |
| A | 2 | - |
| A | 3 | - |
| A | 4 | Interior lighting out put signal, door contact switch |
| A | 5 | - |
| A | 6 | - |
| A | 7 | - |
| A | 8 | - |
| A | 9 | - |
| A | 10 | Rear lid release motor output signal |
| A | 11 | Central locking motor "lock" output signal for all doors |
| A | 12 | Central locking motor output signal for driver's door |
| A | 13 | - |
| A | 14 | Central locking earth input signal (31) |
| A | 15 | Central locking motor output signal for front passenger door and rear doors |
| A | 16 | Central locking supply input signal (30) |
| A | 17 | Central locking lock unit input signal for rear left door |
| A | 18 | Central locking lock unit input signal for rear right door |
| A | 19 | Driver side door contact switch input signal |
| A | 20 | Front passenger side door contact switch input signal |
| A | 21 | Central locking lock unit input signal for front passenger door |
| A | 22 | Central locking lock unit input signal for driver's door |
| A | 23 | Rear lid handle release button input signal |
| A | 24 | Central locking input signal, driver door |
| A | 25 | Interior locking button input signal |
| A | 26 | Door contact switch input signal for rear right door |
| A | 27 | - |
| A | 28 | Hazard warning light button input signal |
| A | 29 | Horn plate input signal |
| A | 30 | Rear lid lock position 2 input signal |
| A | 31 | Rear lid lock position 1 input signal |
| A | 32 | Right turn signal switch input signal |
| A | 33 | Left turn signal switch input signal |
| A | 34 | Door contact switch input signal for rear left door |
| A | 35 | - |
| A | 36 | - |
| A | 37 | - |
| A | 38 | - |
| A | 39 | Earth input signal (31) |
| A | 40 | - |
| A | 41 | - |
| A | 42 | Supply input signal (86s) for ignition/starter switch |
| A | 43 | Brake pedal position sender input signal |
| A | 44 | Supply input signal (15) for ignition/starter switch |
| A | 45 | Side light switch input signal |
| A | 46 | - |
| A | 47 | - |
| A | 48 | - |
| A | 49 | - |
| A | 50 | - |
| A | 51 | - |
| A | 52 | Fuel supply relay output signal |
| A | 53 | - |
| A | 54 | - |
| A | 55 | - |
| A | 56 | Hazard warning light system warning lamp signal output |
| A | 57 | - |
| A | 58 | Central locking SAFE function warning lamp output signal |
| A | 59 | Interior locking warning lamp output signal |
| A | 60 | Heated rear window warning lamp output signal |
| A | 61 | - |
| A | 62 | - |
| A | 63 | - |
| A | 64 | - |
| A | 65 | Supply output signal (30G), interior lights |
| A | 66 | Supply input signal (30), interior lights |
| A | 67 | - |
| A | 68 | Supply input signal (30), window wiper |
| A | 69 | Window wiper position 1 output signal |
| A | 70 | Window wiper earth input signal |
| A | 71 | Window wiper position 2 output signal |
| A | 72 | Horn output signal |
| A | 73 | Horn supply input signal (30) |
| B | 1 | - |
| B | 2 | - |
| B | 3 | - |
| B | 4 | - |
| B | 5 | - |
| B | 6 | - |
| B | 7 | - |
| B | 8 | - |
| B | 9 | - |
| B | 10 | - |
| B | 11 | - |
| B | 12 | - |
| B | 13 | Turn signal and brake light supply input signal (30) |
| B | 14 | Left turn signal output signal |
| B | 15 | Right turn signal output signal |
| B | 16 | Brake lights output signal |
| B | 17 | LIN bus, door control unit and switches in steering wheel |
| B | 18 | Powertrain CAN, low |
| B | 19 | Powertrain CAN, high |
| B | 20 | Convenience CAN, high |
| B | 21 | Convenience CAN, low |
| B | 22 | Diagnosis CAN, low |
| B | 23 | Diagnosis CAN, high |
| B | 24 | - |
| B | 25 | - |
| B | 26 | - |
| B | 27 | Window wiper position 1 input signal |
| B | 28 | - |
| B | 29 | - |
| B | 30 | - |
| B | 31 | Heated rear window button input signal |
| B | 32 | Wiper limit switch input signal |
| B | 33 | - |
| B | 34 | Switch and Instrument Illumination (58d) Output Signal |
| B | 35 | - |
| B | 36 | - |
| B | 37 | Signal (K), diagnosis |
| B | 38 | Earth input signal (31) for electronics |
| B | 39 | Supply input signal (30) for electronics |
| B | 40 | - |
| B | 41 | - |
| B | 42 | - |
| B | 43 | - |
| B | 44 | - |
| B | 45 | - |
| B | 46 | - |
| B | 47 | - |
| B | 48 | Reversing light switch input signal |
| B | 49 | Signal (L) alternator |
| B | 50 | Terminal 50 input signal from ignition/starter switch |
| B | 51 | Supply input signal (75a) for ignition/starter switch |
| B | 52 | - |
| B | 53 | Window wiper position 2 input signal |
| B | 54 | - |
| B | 55 | - |
| B | 56 | - |
| B | 57 | - |
| B | 58 | - |
| B | 59 | Input signal for reference voltage (30) |
| B | 60 | Input signal for earth - reference voltage (31) |
| B | 61 | Washer pump motor and rear window wiper motor output signal |
| B | 62 | Windscreen wiper intermittent operation input signal |
| B | 63 | Heated rear window output signal |
| B | 64 | - |
| B | 65 | - |
| B | 66 | - |
| B | 67 | Heated rear window supply input signal (30) |
| B | 68 | - |
| B | 69 | - |
| B | 70 | - |
| B | 71 | - |
| B | 72 | - |
| B | 73 | - |
| Control unit in dash panel insert -J285- |
| 1 - | Control unit in dash panel insert -J285- |
| 2 - | 32-pin connector -T32- |
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