SEAT LEON 2002 – Radio-navigation-telephone system . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2002 - Control unit with display for radio and navigation - control unit with display in dash panel insert

D	Ignition/starter switch
G106	Ambient temperature indicator
J...	Engine control units
J285	Control unit with display in dash panel insert
J503	Control unit with display for radio and navigation
S5	Fuses in fuse box/relay plate
S10	Fuse in fuse box/relay plate
S237	Fuse in fuse box
T8b	8-pin connector, on radio
T10	10-pin connector, orange, in protective housing for connectors, in plenum chamber, left
T16	16-pin connector, self-diagnosis
T20	20-pin connector, on radio
T26	26-pin connector
T32	32-pin connector, blue, on dash panel insert
A20	Connection (15a), 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
*	Only models up to October 2001
**	Only models up to November 2001

Wiring Diagram SEAT LEON 2002 - Control unit with display for radio and navigation - headphone connection - CD changer

F4	Reversing light switch
J104	ABS with EDL control unit
J226	Starter inhibitor and reversing light relay
J503	Control unit with display for radio and navigation
R13	Headphone connection
R41	CD changer
T3h	3-pin connector
T10	10-pin connector, orange, in protective housing for connectors, on left in plenum chamber
T12a	12-pin connector, in glove box
A87	Connection (RL), in dash panel wiring harness
A133	Connection (ABS impulses, left), in dash panel wiring harness
A134	Connection (ABS impulse right), in dash panel wiring harness
V14	Connection (screening), in CD changer wiring harness
*	Only models with manual gearbox
**	Only models with automatic gearbox

Wiring Diagram SEAT LEON 2002 - Control unit with display for radio and navigation - treble loudspeaker - rear left - bass loudspeaker - rear left - treble loudspeaker - front left - treble loudspeaker - front left

J503	Control unit with display for radio and navigation
R14	Treble loudspeaker, rear left
R15	Bass loudspeaker, rear left
R20	Treble loudspeaker, front left
R21	Bass loudspeaker, front left
R22	Treble loudspeaker, front right
R23	Bass loudspeaker, front right
R50	Navigation aerial (GPS)
R51	Radio/telephone aerial
T1	Single connector, driver's door
T1a	Single connector, driver's door
T1b	Single pin connector, in glove box
T8b	8-pin connector, on radio
T8d	8-pin connector, on radio
T10i	10-pin connector, black, coupling station left A-pillar
T10k	10-pin connector, black, coupling station right A-pillar
T10l	10-pin connector, black, coupling station left B-pillar

Wiring Diagram SEAT LEON 2002 - Control unit with display for radio and navigation - treble loudspeaker - rear right - bass loudspeaker - rear right

E20	Lighting regulator-switches and instruments
J503	Control unit with display for radio and navigation
R16	Treble loudspeaker, rear right
R17	Bass loudspeaker, rear right
T8b	8-pin connector, on radio
T8d	8-pin connector, on radio
T10m	10-pin connector, black, connector point, right B pillar
T20	20-pin connector, on radio
255	Earth connection -1-, in radio wiring harness
A11	Positive (+) connection (58b), in dash panel wiring harness
V22	Positive (+) connection (30a), in navigation wiring harness

Wiring Diagram SEAT LEON 2002 - Mobile phone operating electronics control unit - telephone microphone - mobile phone

D	Ignition and starter switch
J412	Mobile phone operating electronics control unit
R38	Telephone microphone
R54	Mobile telephone
S8	Fuse in fuse holder/relay plate
S12	Fuse in fuse holder/relay plate
S242	Fuse in fuse holder
T2o	2-way connector
T18c	18-way connector, central console
501	Bolted joint -2- (30), on the relay plate
A2	Positive connection (15), instrument panel wiring harness
B111	Positive connection -1- (30a), interior wiring harness
V34	Connection (mute), telephone wiring harness

SEAT LEON 2002 Overview of fuses

Overview of fuses    

1 -

q	Position of fuses

2 -

3 -	Fuse on fuse holder -S162-, -S163-, -S164-, -S176-, -S177-, -S178-, -S179-, -S180-, next to battery

q	Location, up to August 2000:

q	Location, from September 2000:

Fuse in fuse holder, dash panel

Fuse colours

30 A -

green

25 A -

white

20 A -

yellow

15 A -

blue

10 A -

red

7,5 A -

brown

5 A -

beige

3 A -

purple

The fuse electrical connections are shown in the respective current flow diagrams. The fuses for options not mentioned are also shown in the respective Current flow diagrams.

Fuses from S 24 are designated with an additional characteristic o. distinctive feature "2" in the Current Flow Diagram, for example: S 40 is designated as S 240.

 

SEAT LEON 2002 Position of fuses in fuse holder, left dash panel

Position of fuses in fuse holder, left dash panel

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	-S1-	10A	-	Glove compartment light, heated washer jets
2	-	-S2-	10A	-	Turn signals
3	-	-S3-	5A	-	Side light warning lamp
4	-	-S4-	5A	-	Number plate light
5	-	-S5-	7.5A	-	Number plate light
6	-	-S6-	5A	-	Electric folding exterior mirror and window regulator (applicable up to October 2001) Convenience system central control unit (applicable from November 2001)
7	-	-S7-	10A	-	Reversing light
8	-	-S8-	5A	-	Telephone
9	-	-S9-	5A	-	ABS/ESP/HALDEX
10	-	-S10-	10A	-	Petrol engine control unit (applicable up to October 2001) Diesel engine control unit (applicable up to October 2001) - S-contact (applicable from November 2001)
11	-	-S11-	5A	-	Dash panel insert
12	-	-S12-	7.5A	-	Diagnosis voltage
13	-	-S13-	10A	-	Brake lights
14	-	-S14-	10A	-	Interior light
15	-	-S15-	5A	-	Dash panel insert, steering angle sender
16	-	-S16-	10A	-	Compressor

SEAT LEON 2002 Position of fuses in fuse holder, left dash panel

Toledo/León	Fitting Locations	No.  802 / 5

Toledo/León Fitting Locations No.  802 / 6 Toledo/León Fitting Locations No.  802 / 7 Auxiliary fuse above additional relay carrier Right-handdrive vehicles A -  Seat adjustment fuse -S45- (30 A) B -  Vacuum pump fuse (20 A) C -  Window regulator fuse -S37- (30 A) D -  Fuel charging hole fuse -S323- (10 A) E -  Alarm horn fuse -S111- (15 A)  -  Turn signal fuse -S144- (15 A) F -  Taxi fuse (15 A) G -  Vacant H -  Vacant   https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט Left-handdrive vehicles: A -  Seat adjustment fuse -S45- (30 A) B -  Vacuum pump fuse (20 A) C -  Window regulator fuse -S37- (30 A) D -  Vacant E -  Taxi fuse (15 A) F -  Alarm horn fuse 1 -S111- (15 A)  -  Turn signal fuse -S144- (15 A) G -  Fuel charging hole fuse -S323- (10 A) H -  Vacant   https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט SEAT LEON 2002 Fuse on fuse holder, next to battery (up to August 2000): Fuse on fuse holder, next to battery (up to August 2000): Fuses: S162 -  Glow plug heater 50 A S163 -  Engine control unit 50 A S164 -  Radiator fan 40 A S176 -  Passenger compartment, 110A S177 -  Alternator (90 A), 110 A  -  Alternator (120 A), 150 A S178 -  ABS (pump), 30 A S179 -  ABS, 30 A S180 -  Radiator fan 30 A

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

SEAT LEON 2002 Fuse on fuse holder, next to battery (from September 2000):

Fuse on fuse holder, next to battery (from September 2000):

A -	Red wire, 16mm²

   

Fuses: S162 -  Glow plug heater 50 A S163 -  Engine control unit 50 A S164 -  Radiator fan 40 A S176 -  Passenger compartment, 110A S177 -  Alternator (90 A), 110 A  -  Alternator (120 A), 150 A S178 -  ABS (pump), 30 A S179 -  ABS, 30 A S180 -  Radiator fan 30 A

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

SEAT LEON 2002 Overview of coupling station and connections for wiring harness

Overview of coupling station and connections for wiring harness    

1 -	Coupling station in protective housing, in plenum chamber

q	With connectors -T10g-, -T10d-, -T10e-, -T10-, -T6l-, -T10h-,

2 -	Coupling station, right B-pillar

q	With connector

3 -	Coupling station on left of C-pillar

q

Location

4 -	Coupling station on left of A-pillar

q	With connector

5 -	Coupling station in engine compartment, in left wiring harness

q

Location

Coupling station in protective housing, in plenum chamber

1 -	10-pin connector -T10g-, grey, automatic gearbox

2 -	10-pin connector, -T10d-, white, data bus wire, engine control unit, automatic gearbox, Motronic control unit, ABS control unit

3 -	10-pin connector -T10e-, black, cruise control system, Motronic control unit, engine control unit

4 -	10-pin connector -T10-, orange, reversing lights, engine control unit, starter, Climatronic control unit, Motronic control unit

5 -	6-pin connector -T6l-, brown, starter, fuel pump relay, engine control unit

Toledo/León	Fitting Locations	No.  803 / 3

6 -	10-pin connector -T10h-, blue, accelerator position sender, Motronic control unit, engine control unit

7 -	10-pin connector, -T10v-, green, radiator outlet coolant temperature sender, radiator fan control unit, potentiometer for temperature selection rotary knob

SEAT LEON 2002 Coupling station, right B-pillar

Coupling station, right B-pillar

1 -	10-pin connector -T10m-, black, signal loudspeakers, central locking, rear electric window regulator, rear door warning lamp

The wiring on the B-pillar, left, is installed vice versa.

 

SEAT LEON 2002 Coupling station on left of C-pillar Coupling station on left of C-pillar See connectors in fitting locations: Multi-pin connections. 1 -  Earth connection 2 -  Rear fog light, number plate light, reversing lights black 3 -  Rear window wiper and washer system (only for Leon) pink 4 -  Central locking brown

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

SEAT LEON 2002 Coupling station on left of A-pillar

Coupling station on left of A-pillar

1 -	10-pin connector -T10i-, black, central locking, electric mirror adjustment, radio with muting / electric windows

The wiring on the A-pillar, right, is installed vice versa.

 

SEAT LEON 2002 Coupling station in engine compartment, in left wiring harness Coupling station in engine compartment, in left wiring harness See connectors in fitting locations: Multi-pin connections.

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

SEAT LEON 2002 Overview of earth points in engine compartment

Overview of earth points in engine compartment    

608	Earth point, in centre of plenum chamber ⇒ -arrow-

 

10 Earth point, in plenum chamber ⇒ -arrow-

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

609	Earth point, on right in plenum chamber ⇒ -arrow-

 

1 Earth strap, battery - body ⇒ Arrow A

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

12	Earth points, on left in engine compartment ⇒ -arrow B-

 

2 Earth strap, gearbox - body ⇒ -arrow-

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

Overview of earth points in vehicle interior

Toledo/León	Fitting Locations	No.  801 / 6

43	Earth point, lower part of right A-pillar ⇒ -arrow-

 

78 Earth point on right B-pillar ⇒ -arrow-

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

77	Earth point on left B-pillar ⇒ -arrow-

 

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

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

33	Earth point behind dash panel on right ⇒ -arrow-

42	Same earth point as ⇒ -arrow-

 

32	Earth point behind dash panel on left ⇒ -arrow-

 

45 Earth point, behind dash panel

https://portal-diagnostov.com/license.html https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO קבל גישה לכל מכוניות דיאגרמות החיווט

SEAT LEON 2002 Overview of earth points in luggage compartment (Toledo)

Overview of earth points in luggage compartment (Toledo)

50	Earth point, on left in luggage compartment

  Overview of earth points in luggage compartment (León)

57	Earth point, left rear pillar