VW POLO 2004 — Radio systems, alpha, beta, beta with CD-changer, Gamma, Gamma with CD-changer . Wiring diagrams, Pin Connector, Location

Wiring Diagram VW POLO 2004 - Radio - dash panel insert

D	Ignition/starter switch
E	Light switch
J285	Control unit with display in dash panel insert
J519	Onboard supply control unit
R	Radio
SB10	Fuse -10- in fuse holder
SB51	Fuse -51- in fuse box
T8	8-pin connector
T16b	16-pin connector, diagnostic socket
T17	17-pin connector
T18a	18-pin connector
T32a	32-pin connector, blue
TV2	Terminal 30 wiring junction, near relay plate
76	Earth point, near selector mechanism
255	Earth connection -1-, in radio wiring harness
A19	Connection (58d), in dash panel wiring harness
A21	Connection (86s), in dash panel wiring harness
A27	Connection (speed signal), in dash panel wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
V28	Connection -1-, in radio wiring harness
*	Up to May 2002

Wiring Diagram VW POLO 2004 - Vehicle voltage control unit - radio - aerial - front loudspeakers - aerial amplifier

J519	Vehicle voltage control unit
R	Radio
R11	Aerial
R21	Bass loudspeaker, front left
R23	Bass loudspeaker, front right
R24	Aerial amplifier
R26	Middle-high tone loudspeaker, front left
R27	Middle-high tone loudspeaker, front right
T1	Single connector, near sunroof aerial
T2n	2-pin connector
T2m	2-pin connector
T4r	4-pin connector
T4t	4-pin connector
T4u	4-pin connector
T4v	4-pin connector
T8n	8-pin connector
B189	Connection (positive, front right loudspeaker), in interior wiring harness
B190	Connection (negative, FR loudspeaker), in interior wiring harness
B191	Connection (positive, front left loudspeaker), in interior wiring harness
B192	Connection (negative, front right loudspeaker), in interior wiring harness

Wiring Diagram VW POLO 2004 - Vehicle voltage control unit - radio - rear loudspeakers

J519	Vehicle voltage control unit
R	Radio
R15	Bass loudspeaker, rear left
R17	Bass loudspeaker, rear right
R105	Middle tone loudspeaker, rear left
R106	Middle tone loudspeaker, rear right
T2o	2-pin connector
T2s	2-pin connector
T2t	2-pin connector
T2w	2-pin connector
T4o	4-pin connector*
T4p	4-pin connector*
T4x	4-pin connector
T4y	4-pin connector
T4z	4-pin connector
T4w	4-pin connector
T8n	8-pin connector
*	Only applies to four door

Wiring Diagram VW POLO 2004 - Vehicle voltage control unit - radio - CD changer

J519	Vehicle voltage control unit
R	Radio
R41	CD changer
T1	Single connector
T2	2-pin connector
T12e	12-pin connector
T12f	12-pin connector
T18c	18-pin connector, VDA-connector
T20	20-pin connector
V14	Connection (screening), in CD changer wiring harness

VW POLO 2004 Overview of control units

Overview of control units    

1 -	Convenience system central control unit -J393-

q	Fitting location → Page 804/5

q	Connectors → Page 804/6

2 -	Control unit in dash panel insert -J285-

q	Connector T32a → Page 804/7

q	Connector T8c → Page 804/9

3 -	Rear right door control unit -J389-

q	To November 2007, Fitting Locations → Page 804/10

q	From November 2007, Fitting Locations → Page 804/11

4 -	Sliding sunroof adjustment control unit -J245-

q	⇒ Workshop manual; Body; General body repairs, exterior; Repair group 60

5 -	Parking aid control unit -J446-

q	Fitting location → Page 804/12

q	Connectors → Page 804/13

6 -	Fuel pump control unit -J538-

q	Fitting location → Page 804/14

Polo	Fitting Locations	No.  804 / 2

7 -	Rear left door control unit -J388-

q	To November 2007, Fitting Locations → Page 804/15

q	From November 2007, Fitting Locations → Page 804/16

8 -	Driver door control unit -J386-

q	To November 2007, Fitting Locations → Page 804/15

q	From November 2007, Fitting Locations → Page 804/16

9 -	Heated driver seat control unit -J131- or heated front seats control unit -J774-

q	Heated driver seat control unit -J131-

q	Fitting location → Page 804/17

q	Heated front seats control unit -J774-

q	Fitting location → Page 804/17

10 -	Folding exterior mirror control unit -J351-

q	⇒ Fitting locations; Relay assignment; Relay carrier (15 slot) page 803/2 position -1-2-

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

12 -	Onboard supply control unit -J519-

q	Fitting location → Page 804/18

q	Connectors → Page 804/19

13 -	Climatronic control unit -J255-

q	⇒ Workshop manual; Heating; Air conditioning System; Heating, air conditioning system; Repair group 87

14 -	Air conditioning system control unit -J301-

q	⇒ Workshop manual; Heating; Air conditioning System; Heating, air conditioning system; Repair group 87

15 -	Airbag control unit -J234-

q	Fitting location → Page 804/20

q	Connector, models with no side airbag → Page 804/21

q	Connector, models with side airbag → Page 804/22

16 -	Mobile telephone operating electronics control unit -J412-

q	Fitting location → Page 804/23

q	Connectors → Page 804/24

17 -	Fresh air blower control unit -J126-

q	⇒ Workshop manual; Heating; Air conditioning System; Heating, air conditioning system; Repair group 87

Polo	Fitting Locations	No.  804 / 4

18 -	Front passenger door control unit -J387-

q	To November 2007, Fitting Locations → Page 804/10

q	From November 2007, Fitting Locations → Page 804/11

19 -	Heated front passenger seat control unit -J132-

q	Fitting location → Page 804/17

q	Discontinued from November 2005

20 -	Control unit with display for radio and navigation system -J503-

q	⇒ Workshop manual; Vehicle electrics; Communication; Repair group 91

Polo	Fitting Locations	No.  804 / 5

Convenience system central control unit -J393- Fitting location: Under dash panel ⇒ Position 2

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Polo	Fitting Locations	No.  804 / 6

Connectors convenience system central control unit -J393-

A -	Convenience system central control unit

Multi-pin connections:

B -	Connector -T12i-

q

Brown

C -	Connector -T23-

D -	Connector -T12c-

q

Black

Polo	Fitting Locations	No.  804 / 7

VW POLO 2004 32-pin connector,T32a, on dash panel insert -J285- 32-pin connector,T32a, on dash panel insert -J285-  -  30  -  1 - Immobilizer reader coil  -  2 - Main beam warning lamp  -  3 - Dipped beam warning lamp  -  4 - Vacant  -  5 - Speed signal-output  -  6 - Speed signal-input  -  7 - CAN l (engine)  -  8 - CAN h (engine)  -  9 - CAN l (convenience)  -  10 - CAN h (convenience)  -  11 - Multifunction display  -  12 - Multifunction display  -  13 - Vacant  -  14 - Vacant  -  15 - Fuel gauge sender

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

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Polo	Fitting Locations	No.  804 / 9

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

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Polo	Fitting Locations	No.  804 / 10

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

Polo	Fitting Locations	No.  804 / 11

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-

Polo	Fitting Locations	No.  804 / 12

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-

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Polo	Fitting Locations	No.  804 / 13

Connectors for parking aid control unit -J446-

A -	Parking aid control unit

Connectors:

B -	Connector -T12n-

C -	Not assigned

D -	Connector -T16d-

Polo	Fitting Locations	No.  804 / 14

VW POLO 2004 Fuel pump control unit -J538-

Fuel pump control unit -J538-

Fitting location:

Under rear bench seat ⇒ -arrow-

Polo	Fitting Locations	No.  804 / 15

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

Polo	Fitting Locations	No.  804 / 16

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-

Polo	Fitting Locations	No.  804 / 17

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-   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

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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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Polo	Fitting Locations	No.  804 / 18

VW POLO 2004 Onboard supply control unit -J519-

Onboard supply control unit -J519-

Fitting location:

Under dash panel ⇒ Position 1

Polo	Fitting Locations	No.  804 / 19

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

Polo	Fitting Locations	No.  804 / 20

VW POLO 2004 Airbag control unit -J234- Airbag control unit -J234- Fitting location: Under centre console at front ⇒ -arrow-   Note: Earth connection via housing for vehicle earth!

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Polo	Fitting Locations	No.  804 / 21

Connectors on airbag control unit -J234- Models with no side airbag

A -	Airbag control unit

Pin connector:

B -	Connector -T50-

Polo	Fitting Locations	No.  804 / 22

Connectors on airbag control unit -J234- Models with no side airbag

A -	Airbag control unit

Pin connector:

B -	Connector -T75-

Polo	Fitting Locations	No.  804 / 23

VW POLO 2004 Mobile telephone operating electronics control unit -J412- Mobile telephone operating electronics control unit -J412- Fitting location: On right A-pillar

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Polo	Fitting Locations	No.  804 / 24

A -	Mobile telephone operating electronics control unit

Multi-pin connections:

B -	Connector -T18-

C -	Connector -T20a-

q	Connection for cable to mobile phone

VW POLO 2004

VW POLO 2004 Coupling station rear lid

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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Polo	Fitting Locations	No.  806 / 4

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-

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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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Polo	Fitting Locations	No.  806 / 5

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

Polo	Fitting Locations	No.  806 / 7

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

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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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