VW GOLF 2012 — Air conditioning system, CFEA . Wiring diagrams, Pin Connector, Location

Wiring Diagram VW GOLF 2012 - Battery - Starter - Alternator - Voltage regulator

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
J623	Engine control unit
S164	Fuse 3 (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
T1a	Single connector
T2o	2-pin connector
T3r	3-pin connector
T4w	4-pin connector, near starter
1	Earth strap, battery - body
2	Earth strap, gearbox - body
500	Threaded connection 1 (30), on relay plate
507	Threaded connection (30), on battery fuse holder
B465	Connection 1, in main wiring harness

Wiring Diagram VW GOLF 2012 - Ignition/starter switch - X-contact relief relay

D	Ignition/starter switch
J17	Fuel pump relay
J59	X-contact relief relay
T8c	8-pin connector
501	Threaded connection 2 (30), on relay plate
503	Threaded connection (75x), on relay plate
B272	Positive connection (30), in main wiring harness
B298	Positive connection 2 (30), in main wiring harness
B474	Connection 10, in main wiring harness

Wiring Diagram VW GOLF 2012 - Ambient temperature switch - Radiator fan control unit - Air conditioning system magnetic clutch

F38	Ambient temperature switch
J293	Radiator fan control unit
J623	Engine control unit
N25	Air conditioning system magnetic clutch
T2bq	2-pin connector
T2br	2-pin connector
T4w	4-pin connector, near starter
T10af	10-pin connector, behind dash panel, centre
T14b	14-pin connector
B467	Connection 3, in main wiring harness
B470	Connection 6, in main wiring harness
B696	Connection 1 (air conditioning) in main wiring harness
B697	Connection 2 (air conditioning) in main wiring harness

Wiring Diagram VW GOLF 2012 - Radiator fan control unit - Radiator fan

J293	Radiator fan control unit
J623	Engine control unit
T3x	3-pin connector
T4ag	4-pin connector
T14b	14-pin connector
V7	Radiator fan
B468	Connection 4, in main wiring harness
B469	Connection 5, in main wiring harness
B471	Connection 7, in main wiring harness

Wiring Diagram VW GOLF 2012 - High-pressure sender - Radiator fan on right of radiator

G65	High-pressure sender
T3e	3-pin connector
T3y	3-pin connector
T4w	4-pin connector, near starter
T10af	10-pin connector, behind dash panel, centre
T16a	16-pin connector
V35	Radiator fan on right of radiator
12	Earth point, on left in engine compartment
367	Earth connection 2, in main wiring harness
B278	Positive connection 2 (15a) in main wiring harness
*	Diagnostic connection

Wiring Diagram VW GOLF 2012 - Fresh air blower switch - Air conditioning system and heating button - Fresh air and air recirculation flap switch - Fresh air blower series resistor with overheating fuse - Fresh air blower - Fresh air and air recirculation flap control motor

E9	Fresh air blower switch
E85	Air conditioning system and heating button
E159	Fresh air and air recirculation flap switch
K84	Air conditioning system warning lamp
K114	Fresh air and air recirculation warning lamp
L16	Fresh air regulator illumination bulb
N24	Fresh air blower series resistor with overheating fuse
T2bs	2-pin connector
T3u	3-pin connector
T4ae	4-pin connector
T6t	6-pin connector
T8l	8-pin connector
T10af	10-pin connector, behind dash panel, centre
V2	Fresh air blower
V154	Fresh air and air recirculation flap control motor
43	Earth point, lower part of right A-pillar
162	Earth connection, in blower motor wiring harness
L2	Connection in air conditioning system wiring harness
L66	Connection, in heater blower wiring harness

Wiring Diagram VW GOLF 2012 - Fuse 5 in fuse holder A - Fuse 10 in fuse holder A - Fuse 11 in fuse holder A - Fuse 16 in fuse holder A - Fuse 25 in fuse holder A - Fuse 29 in fuse holder A

J623	Engine control unit
SA5	Fuse 5 in fuse holder A
SA10	Fuse 10 in fuse holder A
SA11	Fuse 11 in fuse holder A
SA16	Fuse 16 in fuse holder A
SA25	Fuse 25 in fuse holder A
SA29	Fuse 29 in fuse holder A
B273	Positive connection (15), in main wiring harness
B277	Positive connection 1 (15a) in main wiring harness
B280	Positive connection 4 (15a) in main wiring harness

Wiring Diagram VW GOLF 2012 - Rev. counter - Speedometer - Control unit in dash panel insert - Dash panel insert - Alternator warning lamp - Digital display illumination bulb

G5	Rev. counter
G21	Speedometer
J285	Control unit in dash panel insert
K	Dash panel insert
K2	Alternator warning lamp
L75	Digital display illumination bulb
T32a	32-pin connector
T32b	32-pin connector
B316	Positive connection 2 (30a) in main wiring harness
B743	Positive connection (58b), in main wiring harness

VW GOLF 2012 Engine control unit (80-pin) J623

Engine control unit (80-pin) -J623-

   

Location: –  Central under plenum chamber cover -Arrow-

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Designation of connector:

A -	Engine control unit -J623-

B/C -

80-pin connector, on engine control unit -T80a-

Engine control unit (121-pin) -J623-

Location: –  Central under plenum chamber cover -Arrow-

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Designation of connector:

A -	Engine control unit -J623-

B/C -

121-pin connector, on engine control unit -T121a-

Radiator fan control unit -J293-

Location: –  in engine compartment, bottom left -arrow-

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Designation of connector:

A -	Radiator fan control unit -J293-

B -	4-pin connector, on radiator fan control unit -T4ag-

C -	14-pin connector, on radiator fan control unit -T14b-

Automatic transmission control unit (6-speed transmission) -J217-

Location: –  in engine compartment, right -arrow-

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Designation of connector:

A -	Automatic gearbox control unit -J217-

B -	52-pin connector, on automatic transmission control unit -T52a-

Automatic transmission control unit (4-speed or 5-speed transmission) -J217-

Location: –  in engine compartment, right -arrow-

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Designation of connector:

A -	Automatic gearbox control unit -J217-

B -	68-pin connector, on automatic transmission control unit -T68b-

Driver door control unit -J386-

Location: –  behind the door trim, front left -arrow-

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Designation of connector:

A -	Driver door control unit -J386-

B -	29-pin connector, on driver door control unit -T29a-

Front passenger door control unit -J387-

Location: –  behind the door trim, front right -arrow-

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Designation of connector:

A -	Front passenger door control unit -J387-

B -	29-pin connector, on front passenger door control unit -T29b-

Rear left door control unit -J388-

Location: –  behind the door trim, rear left -arrow-

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Designation of connector:

A -	Rear left door control unit -J388-

B -	18-pin connector, on left rear door control unit -T18c-

Rear right door control unit -J389-

Location: –  behind the door trim, rear right -arrow-

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Designation of connector:

A -	Rear right door control unit -J389-

B -	18-pin connector, on left rear door control unit -T18d-

Climatronic control unit -J255-

Location: –  In centre console, under radio -arrow-

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Designation of connector:

E -	Climatronic control unit -J255-

A -	12-pin connector, on Climatronic control unit -T12b-

B -	20-pin connector, on Climatronic control unit -T20a-

C -	16-pin connector, on Climatronic control unit -T16d-

D -	16-pin connector, on Climatronic control unit -T16b-

Convenience system central control unit -J393-

Location: –  Above relay plate-arrow-

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Designation of connector:

A -	Convenience system central control unit -J393-

B -	15-pin connector, on convenience system central control unit -T15a-

C -	23-pin connector, on convenience system central control unit -T23b-

Multifunction steering wheel control unit -J453-

Location: –  on relay plate, dash panel, left -arrow-

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Designation of connector:

A -	Multifunction steering wheel control unit -J453-

B -	18-pin connector, on multi-function steering wheel control unit -T18b-

Control unit with display in dash panel insert -J285-

Location: –  on dash panel, left -arrow-

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Designation of connector:

A -	Control unit with display in dash panel insert -J285-

C -	32-pin connector, on control unit with display in dash panel insert -T32a-

1 -	Terminal 15a

2 -	Right turn signal

3 -	Speed signal

4 -	Turn signal relay

5 -	Fuel gauge sender

6 -	Terminal 31

7 -	Terminal 31, sensor earth

8 -	Coolant temperature indicator sensor

q	up to June 2007

9 -	Terminal 31

10 -	Oil pressure switch

11 -

vacant

12 -	Alternator

-	Voltage regulator

13 -

vacant

14 -	Rear fog light bulb

15 -

vacant

16 -	Rear lid release switch

17 -	Terminal 56a - high beam -

18 -	Left turn signal

19 -

vacant

20 -	Terminal 58b - tail lights -

21 -	Door contact switch

q	up to December 2007

22 -	Coolant shortage indicator sender

23 -	Terminal 30a

24 -	Terminal 31

25 -	Terminal K/W - engine diagnosis -

26 -	Terminal 58r - right parking light -

27 -	Terminal 58l - left parking light -

28 -	Speedometer sender

29 -	Brake fluid level warning contact

30 -	Terminal 86s

31 -	Front left belt switch

q	up to August 2009

32 -

vacant

B -	32-pin connector, on control unit with display in dash panel insert -T32b-

1 -

vacant

2 -	Immobilizer reader coil

3 -

vacant

4 -

vacant

5 -	Terminal K/W - engine diagnosis -

6 -	Windscreen washer fluid level sender

q	up to September 2007

7 -	Brake wear indicator

8 -	Terminal for CAN-Bus "high" - convenience -

9 -	Terminal for CAN-Bus "low" - convenience -

10 -

vacant

11 -

vacant

12 -	Radiator fan control unit

13 -	Handbrake warning switch

14 -

vacant

15 -

vacant

16 -

vacant

17 -	Immobilizer reader coil

18 -

vacant

19 -	Terminal for CAN-Bus high

20 -	Terminal for CAN-Bus low

21 -

vacant

22 -	Contact switch on bonnet / bonnet for alarm system

q	up to June 2007

23 -	Intermittent wiper regulator

24 -	Intermittent wiper regulator

25 -	Intermittent wiper regulator

26 -	Ambient temperature sensor

27 -	Terminal for CAN-Bus high

28 -	Terminal for CAN-Bus low

29 -

vacant

30 -

vacant

31 -

vacant

32 -

vacant

Airbag control unit -J234-

Location: –  under centre console -arrow-

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Designation of connector:

A -	Airbag control unit -J234-

B -	75-pin connector, on airbag control unit -T75a-

ABS control unit -J104-

Location: –  In engine compartment, left -arrow-

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Designation of connector:

A -	ABS control unit -J104-

B -	47-pin connector, on ABS control unit -T47a-

Parking aid control unit -J446-

Location: –  Behind right luggage compartment lining-arrow-

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Designation of connector:

A -	Parking aid control unit -J446-

B -	16-pin connector, on parking aid control unit -T16e-

C -	12-pin connector, on parking aid control unit -T12d-

Fresh air blower control unit -J126-

Location: –  Behind dashboard, right side, near glove compartment -arrow-

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Designation of connector:

A -	Fresh air blower control unit -J126-

B -	3-pin connector, on fresh air blower control unit -T3ad-

Control unit for interactive system -J879-

Location: –  behind the glove compartment -arrow-

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Designation of connector:

A -	Control unit for interactive system -J879-

B -	16-pin connector, on control unit for interactive system -T16f-

Control unit for lighting and wiper functions -J917-

Location: –  Above glove compartment -arrow-

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Designation of connector:

A -	Control unit for lighting and wiper functions -J917-

B -	12-pin connector, on control unit for lighting and wiper functions -T12h-

C -	16-pin connector, on control unit for lighting and wiper functions -T16g-

Heated driver seat control unit -J131-

Location: –  At centre of dashboard -arrow-

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Designation of connector:

A -	Heated driver seat control unit -J131-

B -	6-pin connector, on heated driver seat control unit -T6p-

Heated front passenger seat control unit -J132-

Location: –  At centre of dashboard -arrow-

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Designation of connector:

A -	Heated front passenger seat control unit -J132-

B -	6-pin connector, on heated front passenger seat control unit -T6q-

Sliding sunroof adjustment control unit -J245-

Location: –  near interior mirror, on roof-arrow-

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Designation of connector:

A -	Sliding sunroof adjustment control unit -J245-

B -	6-pin connector, on sliding sunroof adjustment control unit -T6m-

C -	6-pin connector, on control for sliding sunroof adjustment -T6v-

Mirror memory control unit -J267-

Location: –  on relay plate, dash panel, left -arrow-

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Designation of connector:

A -	Mirror memory control unit -J267-

B -	18-pin connector, on mirror memory control unit -T18e-

VW GOLF 2012

Earth strap, battery - body - Arrow A -

VW GOLF 2012 Earth points in the engine compartment

Earth points in the engine compartment

1	Earth strap, battery - body

q	Location: → Reference

2	Earth strap, gearbox - body

q	Location: → Reference

12	Earth point, on left in engine compartment

q	Location: → Reference

15	Earth point, on cylinder head

q	Location: → Reference

608	Earth point, in centre of plenum chamber

q	Location: → Reference

609	Earth point, on right in plenum chamber

q	Location: → Reference

671	Earth point 1, on front of left longitudinal member

q	Location: → Reference

1 Earth strap, battery - body - Arrow A -    12 earth connection in engine compartment, left -arrow C-    671 Earth point 1 at front of left longitudinal member -arrow B-

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2 Earth strap, gearbox - body- Arrow -

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15 Earth connection on cylinder head - arrow -

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608 Earth point on water deflector, centre- Arrow -

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609 Earth point on water deflector, centre - arrow -

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Earth points in passenger compartment

29	Earth point, near steering column

q	Location: → Reference

42	Earth point, next to steering column

q	Location: → Reference

43	Earth point, lower part of right A-pillar

q	Location: → Reference

44	Earth point, lower part of left A-pillar

q	Location: → Reference

605	Earth point, on top end of steering column

q	Location: → Reference

29 Earth connection near steering column -arrow-

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42 Earth point, next to steering column- arrow -

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43 Earth point, lower part of right A-pillar- Arrow -

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44 Earth point, lower part of left A-pillar -arrow-

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605 Earth point, on top end of steering column - Arrow -

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Earth points in rear part of vehicle

50	Earth points, in luggage compartment, left

q	Location: → Reference

50 Earth points in luggage compartment, left - Arrow -

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VW GOLF 2012 Relay plate, behind left dash panel

Relay plate, behind left dash panel

Relay description:

1 -

vacant

q

Colour: -

2 -	Cold start device relay -J41-

q	Colour: Black 1)

3 -	Starter inhibitor relay -J207-

q	Colour: grey

4 -	Fog light relay -J5-

q	Colour: grey

5 -	Multifunction steering wheel control unit -J453-

q	Colour: black

6 -	Multifunction steering wheel control unit -J453-

q	Colour: black

7 -	Mirror memory control unit -J267-

q	Colour: black

8 -	Mirror memory control unit -J267-

q	Colour: black

9 -

vacant

q

Colour: -

10 -	Secondary air pump relay -J299-

q	Colour: Black 2)

11 -	Starter inhibitor and reversing light relay -J226-

q	Colour: Grey 3)

q

11 -	Starter inhibitor relay 2 -J864-

q	Colour: Grey 4)

12 -	Terminal 30 voltage supply relay -J317-

q	Colour: Grey 5)

13 -	Ignition cut-off delay relay -J64-

q	Colour: Grey 6)

13 -	Electric drive main relay -J437-

q	Colour: Grey 7)

Note t  1) For vehicles with TotalFlex engines only t  2) For vehicles with 1.8l or 2.0l petrol engines only t  3) For vehicles with automatic 4-speed or 5-speed transmissions only t  4) For vehicles with automatic 6-speed transmissions only t  5) For vehicles with Diesel engines only t  6) For vehicles with 1.8l engines only t  7) For vehicles with 2.0l engines only

Relay on additional support under relay plate

Relay description:

1 -	Dual tone horn relay -J4-

q	Colour: grey

2 -	X-contact relief relay -J59-

q	Colour: black

3 -

vacant

q

Colour: -

4 -	Glow plug relay -J52-

q	Colour: Black 1)

4 -	Fuel pump relay -J17-

q	Colour: Black 2)

q	For vehicles with TotalFlex or petrol engines only

V -	Automatic intermittent wash and wipe relay -J31-

q	Colour: black

VI -	Automatic intermittent wash and wipe relay -J31-

q	Colour: black

Note t  1) For vehicles with Diesel engines only t  2) For vehicles with TotalFlex or petrol engines only