VW POLO 2003 – 1.4 l/63 kW Motronic, engine code AXU . Wiring diagrams, Pin Connector, Location – Wiring diagrams for cars
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VW POLO 2003 – 1.4 l/63 kW Motronic, engine code AXU . Wiring diagrams, Pin Connector, Location
Wiring Diagram VW POLO 2003 - Onboard supply control unit - voltage regulator - battery - alternator - starter - radiator fan - radiator fan control unit https://portal-diagnostov.com/license.html
https://portal-diagnostov.com/license.html
Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO A Battery B Starter C Alternator C1 Voltage regulator D Ignition/starter switch J293 Radiator fan control unit J519 Onboard supply control unit S162 Fuse 1 (30), in fuse holder on battery S176 Fuse 4 (30), in fuse holder on battery S177 Fuse 5 (30), in fuse holder on battery S180 Fuse 8 (30), in fuse holder on battery S269 Fuse 11 (30), in fuse holder on battery SB18 Fuse 18 on fuse holder T2 2-pin connector, near starter T2v 2-pin connector T3b 3-pin connector T4t 4-pin connector T6n 6-pin connector, blue, on left of bulkhead T6w 6-pin connector, on left of bulkhead T11a 11-pin connector, withe, on left of bulkhead T11d 11-pin connector, on left of bulkhead T18a 18-pin connector, brown V7 Radiator fan 1 Earth strap, battery - body B135 Connection 1 (15a), in interior wiring harness
Wiring Diagram VW POLO 2003 - Onboard supply control unit - Motronic control unit - ignition coil 1 - 2 and 3 - engine speed sender D Ignition/starter switch G28 Engine speed sender J220 Motronic control unit J519 Onboard supply control unit N70 Ignition coil 1 with output stage N127 Ignition coil 2 with output stage N291 Ignition coil 3 with output stage P Spark plug connector Q Spark plugs SB16 Fuse 16 on fuse holder SB17 Fuse 17 on fuse holder SB37 Fuse 37 on fuse holder T3e 3-pin connector T4b 4-pin connector, black T4l 4-pin connector, black T4m 4-pin connector, black T6r 6-pin connector, brown, on left of bulkhead T11b 11-pin connector, red, on left of bulkhead T14 14-pin connector, in left engine compartment T121 121-pin connector 8 Earth strap, cylinder head cover - ignition coil 281 Earth connection 1, in engine wiring harness A15 Positive connection (15), in instrument panel wiring harness A104 Positive connection 2 (15), in dash panel wiring harness E14 Connection 1, in Motronic wiring harness F1 Positive connection (15), in fully electronic ignition wiring harness
Wiring Diagram VW POLO 2003 - Motronic control unit - throttle valve module - pedal value sender - brake light switch - brake pedal switch - ignition coil 4 F Brake light switch F47 Cruise control system brake pedal switch G79 Accelerator position sender G185 Accelerator position sender -2- G186 Throttle valve drive (electric power control) G187 Throttle valve drive angle sender 1 (electric power control) G188 Throttle valve drive angle sender 2 (electric power control) J220 Motronic control unit J338 Throttle valve module J519 Onboard supply control unit N292 Ignition coil 4 with output stage P Spark plug connector Q Spark plugs SB4 Fuse 4 on fuse holder SB26 Fuse 26 on fuse holder SB26 Fuse 26 on fuse holder T4d 4-pin connector T4p 4-pin connector T6a 6-pin connector, black T6b 6-pin connector, on pedal value sender T10 10-pin connector, white T10s 10-pin connector, grey T11c 11-pin connector, blue, on left of bulkhead T121 121-pin connector 8 Earth strap, cylinder head cover - ignition coil 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 F1 Positive connection (15), in fully electronic ignition wiring harness
Wiring Diagram VW POLO 2003 - Motronic control unit - onboard supply control unit - Hall sender - coolant temperature sender - injectors G40 Hall sender G62 Coolant temperature sender J220 Motronic control unit J519 Onboard supply control unit N30 Injector, cylinder 1 N31 Injector, cylinder 2 N32 Injector, cylinder 3 N33 Injector, cylinder 4 T3 3-pin connector, on left of cylinder head T11a 11-pin connector, withe, on left of bulkhead T16a 16-pin connector T121 121-pin connector 283 Earth connection 2, in engine wiring harness D95 Connection (injectors), in engine compartment wiring harness D137 Connection 2 (injectors), 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 2003 - Active charcoal filter system solenoid valve - intake air temperature sender - exhaust gas recirculation potentiometer - exhaust gas recirculation valve - clutch pedal switch - current supply relay Wiring Diagram VW POLO 2003 - Motronic control unit - NOx sensor control unit - NOx sender - intake manifold pressure sender - intake air temperature sender G42 Intake air temperature sender G71 Intake manifold pressure sender G295 NOx sender J220 Motronic control unit J519 Onboard supply control unit J583 NOx sensor control unit SB40 Fuse 40 on fuse holder T3a 3-pin connector, on left of bulkhead T10 10-pin connector, black T10y 10-pin connector T14x 14-pin connector, black, next to NOx sensor control unit T121 121-pin connector 283 Earth connection 2, in engine wiring harness D102 Connection 2, in engine compartment wiring harness D169 Connection (NOx), in engine compartment wiring harness D170 Connection (NOx +), in engine compartment wiring harness D171 Connection (NOx -), in engine compartment wiring harness E7 Connection (87a), in Motronic wiring harness * Wire is composed of 12 single wires ** Wire is composed of 6 single wires
Wiring Diagram VW POLO 2003 - Motronic control unit - onboard supply control unit - radiator outlet coolant temperature sender - exhaust gas temperature sender - fuel pressure regulating valve - low fuel level sender - low pressure Wiring Diagram VW POLO 2003 - Motronic control unit - fuel pressure sender - intake manifold flap potentiometer - intake manifold flap valve - lambda probe - lambda probe heater Wiring Diagram VW POLO 2003 - Onboard supply control unit - Motronic control unit - knock sensor - data bus diagnostic interface - fuel pump (pre-supply pump) - fuel gauge sender - cruise control system switch E45 Cruise control system switch G Fuel gauge sender G6 Fuel pump (pre-supply pump) G61 Knock sensor I J220 Motronic control unit J519 Onboard supply control unit J533 Data bus diagnostic interface J538 Fuel pump control unit, under rear seat bench T2 2-pin connector, black T4j 4-pin connector T6n 6-pin connector, blue, on left of bulkhead T6r 6-pin connector, brown, on left of bulkhead T10a 10-pin connector T11a 6-pin connector, withe, on left of bulkhead T16a 16-pin connector, black T16b 16-pin connector, diagnosis connection T18a 18-pin connector, brown T121 121-pin connector 81 Earth connection 1, in dash panel wiring harness 269 Earth connection (sender earth) 1, in dash panel wiring harness A76 Connection (diagnosis wire K), in dash panel wiring harness * up May 2002 ** models with cruise control system only
Wiring Diagram VW POLO 2003 - Onboard supply control unit - control unit with display in dash panel insert - oil pressure switch - oil pressure warning lamp - speedometer - fuel gauge - fuses Wiring Diagram VW POLO 2003 - Speedometer sender - warning lamps - oil level and oil temperature sender - dash panel insert - onboard supply control unit VW POLO 2003 Overview of all control units 6 - Engine control units -J248-
ABS control unit -J104-
On right of bulkhead in engine compartment ⇒ -1-
Polo Fitting Locations No. 805 / 3
Connectors for ABS control unit -J104-
Polo Fitting Locations No. 805 / 4
Connectors for ABS control unit -J104-
VW POLO 2003 front left in engine compartment
VW POLO 2003 Automatic gearbox control unit -J217- in engine compartment before battery
Polo Fitting Locations No. 805 / 7
Connectors for automatic gearbox control unit -J217-
A - Automatic gearbox control unit -J217-
VW POLO 2003 Power steering control unit -J500- In engine compartment, on front of left longitudinal member
3 - Connector, depends on equipment -T3s- or -T4s-
VW POLO 2003 Radiator fan control unit -J293- Front left in engine compartment ⇒ -arrow A-
VW POLO 2003 NOx sensor control unit -J583- Under vehicle, near catalytic converter ⇒ -arrow-
A - 10-pin connector, black (T10)
B - 14-pin connector, black (T14x)
VW POLO 2003 Engine control unit - J... On left of bulkhead ⇒ -arrow-
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
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
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.
VW POLO 2003 Overview of control units q From November 2007, Fitting Locations
5 - Parking aid control unit -J446-
Polo Fitting Locations No. 804 / 2
q From November 2007, Fitting Locations
q From November 2007, Fitting Locations
q Heated driver seat control unit -J131-
q Heated front seats control unit -J774-
11 - Dipped headlight control unit, on/off (Coming home system) -J665-
q ⇒ Fitting locations; Relay assignment; Relay carrier (15 slot) page 803/3 position -7-
Polo Fitting Locations No. 804 / 3
14 - Air conditioning system control unit -J301-
q ⇒ Workshop manual; Heating; Air conditioning System; Heating, air conditioning system; Repair group 87
q Connector, models with no side airbag
q Connector, models with side airbag
Polo Fitting Locations No. 804 / 4
q From November 2007, Fitting Locations
q Discontinued from November 2005
Polo Fitting Locations No. 804 / 5
Under dash panel ⇒ Position 2
Connectors convenience system central control unit -J393-
A - Convenience system central control unit
VW POLO 2003 32-pin connector,T32a, on dash panel insert -J285-
Polo Fitting Locations No. 804 / 8
- 16 - Coolant shortage indicator sender
- 17 - Immobilizer reader coil
- 18 - Rear fog light warning lamp
- 19 - Fog light warning lamp
- 20 - Belt switch warning lamp
- 22 - Brake fluid level warning contact
- 23 - Oil pressure switch
- 27 - Multifunction display
- 30 - Windscreen washer fluid level sender
- 31 - Ambient temperature sensor
- 32 - Terminal 31 for sender-output
VW POLO 2003 8-pin connector, T8c, on dash panel insert -J285-
- 1 - Brake pad warning lamp
- 4 - Right parking light
- 5 - Terminal 15 - input
- 7 - Terminal 30 - input
- 8 - Terminal 31 - input
VW POLO 2003 Right door control unit, to November 2007 Front passenger door control unit -J387-
A - Front passenger door control unit
Rear right door control unit -J389-
A - Rear right door control unit
VW POLO 2003 Right door control unit, from November 2007 Front passenger door control unit -J387-
A - Front passenger door control unit
Rear right door control unit -J389-
A - Rear right door control unit
VW POLO 2003 Parking aid control unit -J446- On right behind luggage compartment side trim
1 - Parking aid control unit -J446-
2 - Rear parking aid warning buzzer -H15-
A - 16-pin connector -T16d-
B - 12-pin connector -T12n-
C - 2-pin connector -T2aa-
Connectors for parking aid control unit -J446- A - Parking aid control unit
VW POLO 2003 Fuel pump control unit -J538- Under rear bench seat ⇒ -arrow-
VW POLO 2003 Left door control unit, to November 2007 Driver door control unit -J386-
A - Driver door control unit
Rear left door control unit -J388-
A - Rear left door control unit
VW POLO 2003 Left door control unit, from November 2007 Driver door control unit -J386-
A - Driver door control unit
Rear left door control unit -J388-
A - Rear left door control unit
VW POLO 2003 Heated driver seat control unit -J131- On driver seat frame ⇒ -arrow-
VW POLO 2003 Heated front passenger seat control unit -J132-
On seat frame, front passenger side ⇒ -arrow-
Notes:
t Illustration shows driver side. The front passenger side is similar.
t Heated driver seat control unit - J131 - or Heated front passenger seat control unit - J132 - will be discontinued from November 2005 and will be replaced by Heated front seats control unit - J774
VW POLO 2003 Heated front seats control unit -J774-
On driver seat frame ⇒ -arrow-
Note:
The Heated front seats control unit -J774- will replace from November 2005 the heated driver seat control unit -J131- and the heated front passenger seat control unit -J132-
VW POLO 2003 Onboard supply control unit -J519- Under dash panel ⇒ Position 1
VW POLO 2003 Airbag control unit -J234- Under centre console at front ⇒ -arrow-
Note:
Earth connection via housing for vehicle earth!
Connectors on airbag control unit -J234- Models with no side airbag
Models with no side airbag
VW POLO 2003 Mobile telephone operating electronics control unit -J412-
Polo Fitting Locations No. 804 / 24
A - Mobile telephone operating electronics control unit
VW POLO 2003 VW POLO 2003 Coupling station rear lid
1 - 5-pin connector, vacant
2 - 5-pin connector -T5b-, brown
3 - 5-pin connector -T5e-, black
VW POLO 2003 coupling station heater, air conditioning system
1 - 2-pin connector -T2i-, black
2 - 10-pin connector -T10c-, black
3 - 2-pin connector -T2-, black
VW POLO 2003 Coupling station driver seat VW POLO 2003 coupling station front passenger seat
VW POLO 2003 Coupling station bulkhead (14-pin)
Polo Fitting Locations No. 806 / 6
VW POLO 2003 Coupling station left in engine compartment 1 - 2-pin connector -T2g-, glow plugs (engine codes ASY, AXR AMF, ASZ)
2 - 14-pin connector -T14-, black
VW POLO 2003 Coupling station, on right in engine compartment
1 - 2-pin connector, charge pressure control solenoid valve*
2 - 2-pin connector, activated charcoal filter system solenoid valve*
3 - 2-pin connector, coolant shortage indicator sender *
4 - 6-pin connector, Lambda probe before catalytic converter*
5 - 2-pin connector, temperature sensor after DPF*
6 - 2-pin connector, temperature sensor before DPF*
7 - 2-pin connector, exhaust gas temperature sensor*
* - Not with all levels of equipment
VW POLO 2003 Overview of all earth points 671 - Earth point 1, on front of left longitudinal member
12 - Earth point, on left in engine compartment
652 - Earth point, engine and gearbox earth
11 - Earth point, in battery box
640 - Earth point 2, in engine compartment
29 - Earth point, on left in engine compartment, behind battery
606 - Earth point, under centre console, near selector lever
61 - Earth point, on left C-pillar
Polo Fitting Locations No. 801 / 2
14 - Earth point, on gearbox (depends on equipment)
13 - Earth point, on right in engine compartment
15 - Earth point, on cylinder head (depends on equipment)
614 - Earth point 2, on right in engine compartment
610 - Earth point (audio), at front under centre console
637 - Earth point, airbag control unit
671 - Earth point 1, on front of left longitudinal member
Note:
12 - Earth point, on left in engine compartment
14 - Earth point, on gearbox
Note:
11 - Earth point, in battery box
640 - Earth point 2, in engine compartment
29 - Earth point, on left in engine compartment behind battery
61 - Earth point, left C-pillar
Note:
614 - Earth point 2, on right in engine compartment
15 - Earth point, on cylinder head
Note:
VW POLO 2003 Earth points, in interior 637 - Earth point, airbag control unit
Note:
Earth connection via housing for vehicle earth!
610 - Earth point (audio), under front of centre console
Note:
Discontinued from November 2006
606 - Earth point, under centre console near gear stick
VW POLO 2003 Overview of relay carrier locations 1 - Relay carrier (15-pin)
q Vehicles from November 2001
1 - Driving school mode relay -746-
3 - Glow plug relay -J52- (100)
3 - Motronic current supply relay -J271- (103)
4 - Fuel pump relay -J17- (53)
5 - Warning lamps relay -J560- (449)
6 - Headlight washer system -J39- (53)
7 - Starter inhibitor relay -J207- (126)
8 - Low heat output relay -J359- (53)
9 - High heat output relay -J360- (100)
Polo Fitting Locations No. 803 / 3
10 - Motronic current supply relay -J271- (100) or (429)
10 - Current supply relay -J16- (429)
10 - Current supply relay -J16- (53)
11 - X-contact relief relay -J59- (18)
12 - Fuel supply relay -J643- (404)
13 - Fuel pump relay -J17- (167)
15 - Diesel direct injection system relay -J317- (109)
VW POLO 2003 Relay carrier (15 slot), from May 2005 1 - Secondary air pump relay -J299-
1 - Folding exterior mirror control unit -J351- (361)
2 - Folding exterior mirror control unit -J351- (361)
2 - Driving school mode relay -J746-
3 - Glow plug relay -J52- (103)
3 - Motronic current supply relay -J271- (100)
4 - Fuel pump relay -J17- (53)
5 - Door warning lamps relay -J560- (449)
5 - Brake light suppression relay -J508- (489)
q November 2005 to November 2006
6 - Headlight washer system relay -J39- (53)
Polo Fitting Locations No. 803 / 5
7 - Dipped headlight control unit, on/off (coming home system) -J665- (449)
8 - Low heat output relay -J359- (53)
8 - Coolant pump relay -J235- (53)
9 - High heat output relay -J360- (100)
10 - Motronic current supply relay -J271- (429)
q Only engine codes BMD and BME
10 - Radiator fan relay -J26- (53)
q Only engine codes ASZ and BLT
11 - X-contact relief relay -J59- (100)
12 - Fuel supply relay -J643- (404)
q Only engine codes BMD and BXU
Polo Fitting Locations No. 803 / 6
13 - Fuel pump relay -J17- (167)
q S276 - Heater element fuse 1 - 40A
q S277 - Heater element fuse 2 - 40A
q S278 - Heater element fuse 3 - 40A
15 - Terminal 30 voltage supply relay -J317- (109)/(643)
q Petrol engines with engine code BJX or BUD
15 - Starter inhibitor relay -J207- (53)
q Only engine code BKY with automatic gearbox
15 - Motronic current supply relay -J271- (109)
q Only engine codes BUD and BTS
15 - Fuel pump relay -J17- (167)/(447)
q Only engine codes BMD and BME
VW POLO 2003 Relay carrier (15 slot), from May 2008 1 - Secondary air pump relay -J299- (100)
1 - Folding exterior mirror control unit -J351- (361)
2 - Folding exterior mirror control unit -J351- (361)
2 - Driving school mode relay -J746- (467)
3 - Glow plug relay -J52- (100)
q Only engine codes AXR, BNV, BNM
4 - Fuel pump relay -J17- (53)
6 - Headlight washer system relay -J39- (53)
¹) Gradual introduction in model year 2008
Polo Fitting Locations No. 803 / 8
7 - Dipped headlight control unit, on/off (coming home system) -J665- (456)
8 - Low heat output relay -J359- (53)
9 - High heat output relay -J360- (100)
10 - Motronic current supply relay -J271- (429)
q Only engine codes BBM, BZG
10 - Radiator fan relay -J26- (53)
q Only engine codes ASZ, BLT
11 - X-contact relief relay -J59- (100)
12 - Fuel supply relay -J643- (404)
q Only engine codes BTS, BUD, BZG
Polo Fitting Locations No. 803 / 9
13 - Fuel pump relay -J17- (53)
q S276 - Heater element fuse 1 - 40A
q S277 - Heater element fuse 2 - 40A
q S278 - Heater element fuse 3 - 40A
15 - Terminal 30 voltage supply relay - J317 (643)
15 - Motronic current supply relay -J271- (643)
q Not engine codes BUD, BTS
¹) Discontinued with gradual introduction in model year 2008
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