VW POLO 2004 – 1.4 l/55 kW 4TV, engine code BKY . Wiring diagrams, Pin Connector, Location

Wiring Diagram VW POLO 2004 - Battery - starter - alternator - radiator fan thermal switch - radiator fan

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
F18	Radiator fan thermal switch
J519	Onboard supply control unit
S162	Fuse 1 (30) in fuse holder on battery
S163	Fuse 2 (30) in fuse holder on battery
S180	Fuse 8 (30) in fuse holder on battery
T2	2-pin connector, near starter
T3a	3-pin connector, grey, on left of bulkhead
T3b	3-pin connector, on radiator fan
T6n	6-pin connector, blue, on left of bulkhead
T11a	11-pin connector, withe, on left of bulkhead
T12a	12-pin connector, withe, on left of bulkhead
T18a	18-pin connector, brown
V7	Radiator fan
B170	Positive connection 2 (30), in interior wiring harness
*	for models without air conditioner/Climatronic only

Wiring Diagram VW POLO 2004 - Ignition/starter switch - fuel pump relay - fuel supply relay - fuses

D	Ignition/starter switch
J17	Fuel pump relay
J519	Onboard supply control unit
J643	Fuel supply relay
SB4	Fuse 4 on fuse holder
SB7	Fuse 7 on fuse holder
SB9	Fuse 9 on fuse holder
SB14	Fuse 14 on fuse holder
SB25	Fuse 25 on fuse holder
SB37	Fuse 37 on fuse holder
SB45	Fuse 45 on fuse holder
T6r	6-pin connector, brown, on left of bulkhead
T11b	11-pin connector, red, on left of bulkhead
T16a	16-pin connector, black
T18a	18-pin connector, brown
A2	Positive connection (15), in dash panel wiring harness
A15	Positive connection (15), in instrument panel 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
A99	Connection 1 (87), in dash panel wiring harness
A104	Positive connection 2 (15), 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 2004 - 4MV injection system control unit - fuses

J519	Onboard supply control unit
J687	4MV injection system control unit
SB5	Fuse 5 on fuse holder
SB26	Fuse 26 on fuse holder
SB41	Fuse 41 on fuse holder
T6n	6-pin connector, blue, on left of bulkhead
T14	14-pin connector, in left engine compartment
T121	121-pin connector
131	Earth connection 2, in engine compartment wiring harness
281	Earth connection 1, in engine harness
A99	Connection 1 (87), 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 2004 - 4MV injection system control unit - ignition coils with output stage - heater element for crankcase breather

J519	Onboard supply control unit
J687	4MV injection system control unit
N70	Ignition coil 1 with output stage
N79	Heater element for crankcase breather
N127	Ignition coil 2 with output stage
N291	Ignition coil 3 with output stage
N292	Ignition coil 4 with output stage
P	Spark plug connector
Q	Spark plugs
T6r	6-pin connector, brown, on left of bulkhead
T121	121-pin connector
91	Earth connection 1, in fully electronic ignition system wiring harness
281	Earth connection 1, in engine harness
D1	Positive connection (15a), in front right wiring harness
F1	Positive connection (15), in fully electronic ignition wiring harness

Wiring Diagram VW POLO 2004 - 4MV injection system control unit - engine speed sender - Hall sender - intake air temperature sender - coolant temperature sender - intake manifold pressure sender - exhaust gas recirculation valve

G28	Engine speed sender
G40	Hall sender
G42	Intake air temperature sender
G62	Coolant temperature sender
G71	Intake manifold pressure sender
G212	Exhaust gas recirculation potentiometer
J687	4MV injection system control unit
J519	Onboard supply control unit
N18	Exhaust gas recirculation valve
T121	121-pin connector
283	Earth connection 2, in engine harness
D1	Positive connection (15a), in front right wiring harness
D141	Connection (5V), in engine wiring harness

Wiring Diagram VW POLO 2004 - Clutch pedal switch - brake pedal switch - accelerator position sender - throttle valve module - 4MV injection system control unit

F	Brake light switch
F36	Clutch pedal switch
F47	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 for electric throttle
G188	Throttle valve drive angle sender 2 for electric throttle
J338	Throttle valve module
J519	Onboard supply control unit
J687	4MV injection system control unit
T6n	6-pin connector, blue, on left of bulkhead
T11c	11-pin connector, blue, on left of bulkhead
T121	121-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 2004 - Lambda probes - 4MV injection system control unit - active charcoal filter system solenoid valve 1

G39	Lambda probe
G130	Lambda probe after catalytic converter
J519	Onboard supply control unit
J687	4MV injection system control unit
N80	Activated charcoal filter system solenoid valve 1
T4z	4-pin connector, near lambda probe after catalytic converter
T6z	6-pin connector, near lambda probe
T11a	11-pin connector, withe, on left of bulkhead
T16a	16-pin connector, black
T121	121-pin connector
Z19	Lambda probe heater
Z29	Lambda probe 1 heater after catalytic converter
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
E29	Connection, in engine compartment wiring harness
E30	Connection (87a), in engine wiring harness

Wiring Diagram VW POLO 2004 - Cruise control system switch - knock sensor 1 - 4MV injection system control unit - injectors for cylinders

E45	Cruise control system switch
G61	Knock sensor 1
J519	Onboard supply control unit
J533	Data bus diagnostic interface
J687	4MV injection system control unit
N30	Injector, cylinder 1
N31	Injector, cylinder 2
N32	Injector, cylinder 3
N33	Injector, cylinder 4
T6n	6-pin connector, blue, on left of bulkhead
T6y	6-pin connector, brown
T11a	11-pin connector, withe, on left of bulkhead
T14	14-pin connector, in left engine compartment
T16b	16-pin connector, diagnosis connection
T18a	18-pin connector, brown
T41	41-pin connector, on steering column switch
T121	121-pin connector
200	Earth connection (screening) in engine compartment wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
A130	Connection (cruise control system), in dash panel wiring harness
D140	Connection (injectors), in engine wiring harness
*	for models with CCS only

Wiring Diagram VW POLO 2004 - Oil pressure switch - fuel gauge - speedometer sender - oil level and oil temperature sender - dash panel insert

F1	Oil pressure switch
G	Fuel gauge sender
G1	Fuel gauge
G6	Fuel system pressurisation pump
G22	Speedometer sender
G266	Oil level and oil temperature sender
J285	Control unit in dash panel insert
J361	Simos control unit
J519	Onboard supply control unit
K3	Oil pressure warning lamp
K83	Exhaust emissions warning lamp
K105	Reserve fuel warning lamp
K132	Electric power control fault lamp
T6v	6-pin connector, green, on left of bulkhead
T11a	11-pin connector, withe, on left of bulkhead
T11b	11-pin connector, red, on left of bulkhead
T14	14-pin connector, in left engine compartment
T32a	32-pin connector
T121	121-pin connector
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
A27	Connection (speed signal), in dash panel wiring harness
*	is dropped in vehicles with ABS

VW POLO 2004 Overview of control units

Overview of control units    

q	Connectors

q	Connector T8c

q	From November 2007, Fitting Locations

5 -	Parking aid control unit -J446-

q	Fitting location

q	Connectors

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	Fitting location

q	Heated front seats control unit -J774-

q	Fitting location

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

q	Connectors

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

q	Connectors

Polo Fitting Locations No.  804 / 4 https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO Obtenez l'accès à tous les schémas de câblage de la voiture q   From November 2007, Fitting Locations q   Discontinued from November 2005 Polo Fitting Locations No.  804 / 5 Convenience system central control unit -J393- Fitting location: Under dash panel ⇒ Position 2   https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO Obtenez l'accès à tous les schémas de câblage de la voiture Connectors convenience system central control unit -J393- https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO Obtenez l'accès à tous les schémas de câblage de la voiture A -  Convenience system central control unit Multi-pin connections: B -  Connector -T12i- q   Brown C -  Connector -T23- D -  Connector -T12c- q   Black VW POLO 2004 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  -  21 - Handbrake warning  -  22 - Brake fluid level warning contact  -  23 - Oil pressure switch  -  24 - Wake-up  -  25 - Vacant  -  26 - Vacant  -  27 - Multifunction display  -  28 - Vacant  -  29 - Vacant  -  30 - Windscreen washer fluid level sender  -  31 - Ambient temperature sensor  -  32 - Terminal 31 for sender-output   https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO Obtenez l'accès à tous les schémas de câblage de la voiture VW POLO 2004 8-pin connector, T8c, on dash panel insert -J285-

8-pin connector, T8c, on dash panel insert -J285-

-	1 - Brake pad warning lamp

-	2 - Vacant

-	3 - Vacant

-	4 - Right parking light

-	5 - Terminal 15 - input

-	6 - Left parking light

-	7 - Terminal 30 - input

-	8 - Terminal 31 - input

 

VW POLO 2004 Right door control unit, to November 2007

Right door control unit, to November 2007

Front passenger door control unit -J387-

A -	Front passenger door control unit

Multi-pin connections:

B -	Connector -T8i-

C -	Not assigned

Rear right door control unit -J389-

A -	Rear right door control unit

Multi-pin connections:

B -	Connector -T8k-

C -	Not assigned

VW POLO 2004 Right door control unit, from November 2007

Right door control unit, from November 2007

Front passenger door control unit -J387-

A -	Front passenger door control unit

Multi-pin connections:

B -	Connector -T16f-

Rear right door control unit -J389-

A -	Rear right door control unit

Multi-pin connections:

B -	Connector -T16h-

VW POLO 2004 Parking aid control unit -J446-

Parking aid control unit -J446-

Fitting location:

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

Connectors:

B -	Connector -T12n-

C -	Not assigned

D -	Connector -T16d-

VW POLO 2004 Fuel pump control unit -J538-

Fuel pump control unit -J538-

Fitting location:

Under rear bench seat ⇒ -arrow-

VW POLO 2004 Left door control unit, to November 2007

Left door control unit, to November 2007

Driver door control unit -J386-

A -	Driver door control unit

Multi-pin connections:

B -	Pin connector -T8h-

C -	Connector -T6aa-

Rear left door control unit -J388-

A -	Rear left door control unit

Multi-pin connections:

B -	Connector -T8j-

C -	Not assigned

VW POLO 2004 Left door control unit, from November 2007

Left door control unit, from November 2007

Driver door control unit -J386-

A -	Driver door control unit

Multi-pin connections:

B -	Connector -T16e-

Rear left door control unit -J388-

A -	Rear left door control unit

Multi-pin connections:

B -	Connector -T16g-

VW POLO 2004 Heated driver seat control unit -J131-

Heated driver seat control unit -J131-

Fitting location:

On driver seat frame ⇒ -arrow-

VW POLO 2004 Heated front passenger seat control unit -J132-

Heated front passenger seat control unit -J132-

Fitting location:

On seat frame, front passenger side ⇒ -arrow-

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 2004 Heated front seats control unit -J774- Heated front seats control unit -J774- Fitting location: 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-

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VW POLO 2004 Onboard supply control unit -J519-

Onboard supply control unit -J519-

Fitting location:

Under dash panel ⇒ Position 1

Connectors on onboard supply control unit -J519-

XP1 - Connector -T6o-

t

Black

XP2 - Connector -T6j-

t

Brown

XP3 - Connector -T6x-

t

White

XP4 - Connector -T5a-

t

Black

XP5 - Connector -T5c-

t

Brown

XS1 - Connector -T6c-

t

Black

XS2 - Connector -T18b-

t

Black

XS3 - Connector -T6y-

t

Brown

XS4 - Connector -T18a-

t

Brown

XS5 - Connector -T6k-

t

Red

XS6 - Connector -T16a-

t

Black

VW POLO 2004 Airbag control unit -J234-

Airbag control unit -J234-

Fitting location:

Under centre console at front ⇒ -arrow-

Earth connection via housing for vehicle earth!

  Connectors on airbag control unit -J234-

Models with no side airbag

   

A -	Airbag control unit

Pin connector:

B -	Connector -T50-

Connectors on airbag control unit -J234-

Models with no side airbag

   

A -	Airbag control unit

Pin connector:

B -	Connector -T75-

VW POLO 2004 Mobile telephone operating electronics control unit -J412-

Mobile telephone operating electronics control unit -J412-

Fitting location:

On right A-pillar

 

Polo	Fitting Locations	No.  804 / 24

A -	Mobile telephone operating electronics control unit

VW POLO 2004 Coupling station rear lid

VW POLO 2004

Coupling station rear lid

Fitting location:

On left C-pillar

1 -	5-pin connector, vacant

2 -	5-pin connector -T5b-, brown

3 -	5-pin connector -T5e-, black

 

VW POLO 2004 coupling station heater, air conditioning system coupling station heater, air conditioning system Fitting location: Near fresh air blower 1 -  2-pin connector -T2i-, black 2 -  10-pin connector -T10c-, black 3 -  2-pin connector -T2-, black

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VW POLO 2004 Coupling station driver seat

Coupling station driver seat

Fitting location:

under seat

1 -

Vacant

2 -	Connector -T6z-

3 -	Connector -T6g-

4 -

Vacant

5 -	Connector -T3p-

6 -	Connector -T12g-

7 -	Connector -T4a-

 

VW POLO 2004 coupling station front passenger seat coupling station front passenger seat Fitting location: under seat 1 -  Vacant 2 -  Vacant 3 -  Connector -T6d- 4 -  Vacant 5 -  Connector -T3r- 6 -  Vacant 7 -  Connector -T4c-

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VW POLO 2004 Coupling station bulkhead (14-pin)

Coupling station bulkhead (14-pin)

Pin connector:

A -	Connector -T8x-

q

Orange

B -	Connector -T6n-

q

Blue

C -	Connector -T6r-

q

Brown

D -	Connector -T11a-

q

White

E -	Connector -T6v-

q

Green

F -	Connector -T3a-

q

Grey

G -	Connector -T6q-

q

Red

Polo	Fitting Locations	No.  806 / 6

H -	Not assigned

I -	Connector -T11c-

q

Blue

K -	Connector -T11b-

q

Red

L -	Connector -T11d-

q

Brown

M -	Connector -T9a-

q

Yellow

N -	Connector -T6w-

q

Orange

P -	Connector -T12a-

q

White

VW POLO 2004 Coupling station left in engine compartment

Coupling station left in engine compartment

Fitting location:

t	Near suspension tower

1 -	2-pin connector -T2g-, glow plugs (engine codes ASY, AXR AMF, ASZ)

2 -	14-pin connector -T14-, black

 

VW POLO 2004 Coupling station, on right in engine compartment Coupling station, on right in engine compartment Fitting location: t  Near suspension tower 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

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VW POLO 2004 Overview of all earth points

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

Earth point, in engine compartment

671 - Earth point 1, on front of left longitudinal member

Discontinued, from 2006

 

12 - Earth point, on left in engine compartment 14 - Earth point, on gearbox   Note: Depends on equipment

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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

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Discontinued, from 2006

 

614 - Earth point 2, on right in engine compartment 15 - Earth point, on cylinder head   Note: Depends on equipment

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VW POLO 2004 Earth points, in interior

Earth points, in interior

637 - Earth point, airbag control unit

Earth connection via housing for vehicle earth!

610 - Earth point (audio), under front of centre console

Discontinued from November 2006

606 - Earth point, under centre console near gear stick

 

VW POLO 2004 Overview of relay carrier locations

Overview of relay carrier locations    

1 -	Relay carrier (15-pin)

q	Vehicles from November 2001

q	Fitting location

q	Vehicles from May 2005

q	Fitting location

q	Vehicles from May 2008

q	Fitting​ location​

Relay carrier (15 slot), from November 2001

1 -	Driving school mode relay -746-

2 -	Not assigned

3 -	Glow plug relay -J52- (100)

3 -	Motronic current supply relay -J271- (103)

q	Only engine code AXU

4 -	Fuel pump relay -J17- (53)

q	Diesel engines

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)

q	Petrol engines

14 -

Fuses

q	Only diesel

q	S276 - 40A

q	S277 - 40A

q	S278 - 40A

15 -	Diesel direct injection system relay -J317- (109)

VW POLO 2004 Relay carrier (15 slot), from May 2005

Relay carrier (15 slot), from May 2005

1 -	Secondary air pump relay -J299-

q	Only engine code BJX

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)

q	Diesel engines

q	Not engine code BLT

3 -	Motronic current supply relay -J271- (100)

q	Only engine code AXU

4 -	Fuel pump relay -J17- (53)

q	Diesel engines

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)

q	Diesel engines

8 -	Coolant pump relay -J235- (53)

q	Only engine code BJX

9 -	High heat output relay -J360- (100)

q	Diesel engines

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	Petrol engines

q	Only engine codes BMD and BXU

Polo	Fitting Locations	No.  803 / 6

13 -	Fuel pump relay -J17- (167)

q	Petrol engines

q	Not engine code AXU

14 -

Fuses

q	Diesel engines

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	Diesel engines

q	Petrol engines with engine code BJX or BUD

15 -	Starter inhibitor relay -J207- (53)

q	Petrol engines

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 2004 Relay carrier (15 slot), from May 2008

Relay carrier (15 slot), from May 2008

1 -	Secondary air pump relay -J299- (100)

q	Only engine code BJX

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	Diesel engines

q	Only engine codes AXR, BNV, BNM

4 -	Fuel pump relay -J17- (53)

q	Diesel engines

q	Petrol engines ¹)

5 -	Not assigned

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)

q	Diesel engines

9 -	High heat output relay -J360- (100)

q	Diesel engines

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	Petrol engines ¹)

14 -

Fuses

q	Diesel engines

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)

q	Diesel engines

15 -	Motronic current supply relay -J271- (643)

q	Petrol engines

q	Not engine codes BUD, BTS

¹) Discontinued with gradual introduction in model year 2008

VW POLO 2004 Overview of all control units

Overview of all control units    

6 -	Engine control units -J248- , -J623- , -J361- , -J220- , -J687- , -J537-

q	Fitting location

ABS control unit -J104-

Fitting location:

On right of bulkhead in engine compartment ⇒ -1-

 

Polo	Fitting Locations	No.  805 / 3

Connectors for ABS control unit -J104-

A -	ABS control unit

Connector:

B -	Connector -T38-

Polo	Fitting Locations	No.  805 / 4

Connectors for ABS control unit -J104-

A -	ABS control unit

Connector:

B -	Connector -T47-

VW POLO 2004

Glow plug activation control unit -J370- / automatic glow period control unit -J179-

Fitting location:

front left in engine compartment

Pin assignment in relay:

1 -	Output glow plug

2 -	Output glow plug

3 -	Output glow plug

4 -	Output glow plug

5 -	Not assigned

6 -	Terminal 15

7 -	Terminal 31

8 -	Not assigned

9 -	Activation

10 -	Activation

11 -	Terminal 30

 

VW POLO 2004 Automatic gearbox control unit -J217-

Automatic gearbox control unit -J217-

Fitting location:

in engine compartment before battery

 

Polo	Fitting Locations	No.  805 / 7

Connectors for automatic gearbox control unit -J217-

A -	Automatic gearbox control unit -J217-

Connector:

B -	Connector -T68-

VW POLO 2004 Power steering control unit -J500-

Power steering control unit -J500-

Fitting location:

In engine compartment, on front of left longitudinal member

1 -	Connector -T4r-

2 -	Connector -T2a-

3 -	Connector, depends on equipment -T3s- or -T4s-

4 -	Engine pump unit

 

VW POLO 2004 Radiator fan control unit -J293-

Radiator fan control unit -J293-

Fitting location:

Front left in engine compartment ⇒ -arrow A-

 

VW POLO 2004 NOx sensor control unit -J583-

NOx sensor control unit -J583-

Fitting location:

Under vehicle, near catalytic converter ⇒ -arrow-

A -	10-pin connector, black (T10)

B -	14-pin connector, black (T14x)

 

VW POLO 2004 Engine control unit - J...

Engine control unit - J...

Fitting location:

On left of bulkhead ⇒ -arrow-

  Engine control unit - J...

Note: see respective current flow diagram for engine control unit.

   

-	80-pin connector*

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

Connectors:

B -	81-pin connector

C -	40-pin connector

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

Connectors:

B -	94-pin connector

C -	60-pin connector

Note Connector T154 comprises a 94-pin and a 60-pin connector.