SEAT LEON 2002 – Antiblocking system (ABS) with electronic antiblocking differential (EDS), traction control system (ASR), electronic stabilisation programme (ESP) and brake wear control (MARK 60) . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2002 - ABS with EDL - TCS and ESP control unit - TCS/ESP button - traction control switch illumination

A	Battery
D	Ignition/starter switch
E256	TCS/ESP button
F	Brake light switch
J104	ABS with EDL TCS and ESP control unit
L71	Traction control switch illumination
S9	Fuse in fuse box/relay plate
S178	Fuse -6- (30), in fuse box/battery
S179	Fuse -7- (30), in fuse box/battery
T3	3-pin connector, on battery
T47	47-pin connector
A2	Positive (+) connection (15), in dash panel wiring harness
A38	Positive (+) connection -2- (15a), in dash panel wiring harness
A132	Connection (TCS/ESP), in dash panel wiring harness
W1	Positive (+) connection -1- (54), in rear wiring harness
*	Only models with ESP
**	Only models with ASR

Wiring Diagram SEAT LEON 2002 - Control unit for ABS with EDS - ASR and ESP - steering angle sender - ABS inlet valve - rear right

G85	Steering angle sender
J...	Engine control units
J104	Control unit for ABS with EDS, ASR and ESP
J217	Automatic gearbox control unit
N133	ABS inlet valve, rear right
N134	ABS inlet valve, rear left
N135	ABS outlet valve, rear right
N134	ABS outlet valve, rear left
T6o	6-way connector, beside the steering column
T10d	10-way connector, green, in the connector's protective casing, plenum chamber, left
T47	47-way connector
T68	68-way connector
A121	Connection (High-Bus), instrument panel wiring harness
A122	Connection (Low-Bus), instrument panel wiring harness
*	Only vehicles with an automatic gearbox
**	Only vehicles with four wheel drive

Wiring Diagram SEAT LEON 2002 - Control unit for ABS with EDS - ASR and ESP - front right wheel revolution sensor - front left wheel revolution sensor

G45	Front right wheel revolution sensor
G47	Front left wheel revolution sensor
J104	Control unit for ABS with EDS, ASR and ESP
N99	ABS inlet valve, front right
N100	ABS outlet valve, front right
N101	ABS inlet valve, front left
N102	ABS outlet valve, front left
N227	High pressure valve -1- electronic stability programme
N228	Low pressure valve -2- electronic stability programme
T2d	2-way connector, ABS sensor, front left
T2e	2-way connector, ABS sensor, front right
T47	47-way connector
*	Only vehicles with brake pad wear

Wiring Diagram SEAT LEON 2002 - ABS with EDL TCS and ESP control unit - rear right speed sensor - rear left speed sensor

G44	Rear right speed sensor
G46	Rear left speed sensor
G200	Lateral acceleration sender
G202	Yaw rate sender
G214	Brake pressure sender -2-
J104	ABS with EDL TCS and ESP control unit
N225	Electronic stability program switch valve -1-
N226	Electronic stability program switch valve -2-
V64	ABS hydraulic pump
T2f	2-pin connector, on ABS sensor rear left
T2g	2-pin connector, on ABS sensor rear right
T47	47-pin connector
D146	Connection (rear left speed sensor +), in engine compartment wiring harness
D147	Connection (rear left speed sensor -), in engine compartment wiring harness
D148	Connection (rear right speed sensor +), in engine compartment wiring harness
149	Connection (rear right speed sensor -), in engine compartment wiring harness
J3	Connection -1-, in ABS wiring harness
J5	Connection -2-, in ABS wiring harness

Wiring Diagram SEAT LEON 2002 - Control unit for ABS with EDS - ASR and ESP - longitudinal acceleration sender

G251	Longitudinal acceleration sender
J104	Control unit for ABS with EDS, ASR and ESP
J503	Control unit with display for radio and navigation
T16	16-way connector, self-diagnosis
T26	26-way connector
T47	47-way connector
A76	Connection (diagnosis cable K), instrument panel wiring harness
133	Connection (ABS impulses, left), instrument panel wiring harness
134	Connection (ABS impulses, right), instrument panel wiring harness
*	Only on vehicles with Navigation system
**	Only vehicles with four wheel drive

Wiring Diagram SEAT LEON 2002 - Control unit with warning lamps on the instrument panel - handbrake control switch - brake fluid level switch - trailer operation warning lamp

E3	Emergency flasher switch
F9	Handbrake control switch
F34	Brake fluid level switch
J217	Automatic gearbox control unit
J285	Control unit with warning lamps on instrument panel
K18	Trailer operation warning lamp
K47	ABS warning lamp
K118	Brake system indicator light
S15	Fuses in fuse holder/relay plate
T7	7-way connector, central console
T10g	10-way connector, grey, in the connector's protective casing, plenum chamber, left
T68	68-way connector
176	Earth connection, right hand headlamp wiring harness
179	Earth connection, right hand side headlamp wiring harness
501	Bolted joint -2- (30), on the relay plate
A52	Positive connection -2- (30), in instrument panel wiring harness
A76	Connection (diagnosis cable K), instrument panel wiring harness
A115	Connection (handbrake control), instrument panel wiring harness
*	Only vehicles with an automatic gearbox

Wiring Diagram SEAT LEON 2002 - Control unit with warnig lamps on the instrument panel - brake lining/pad wear sender - front left - brake pad/lining warning lamp

G34	Brake lining/pad wear sender, front left
J...	Engine control units
J255	Climatronic control unit
J285	Control unit with warning lamps on instrument panel
K32	Brake pad/lining warning lamp
K155	Stability program warning lamp
T10	10-way connector, orange, in the connector's protective casing, plenum chamber, left
T12d	12-way connector, climatronic unit
T20a	20-way connector, climatronic unit
T32a	32-way connector, green, instrument panel
81	Earth connection -1-, instrument panel wiring harness
135	Earth connection -2-, instrument panel wiring harness
D53	Connection (brake pad wear indicator, right) engine bay wiring harness
D54	Connection (brake pad wear indicator, right) engine bay wiring harness
*	Only vehicles with brake pad wear

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 获取访问所有汽车的接线图 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 获取访问所有汽车的接线图 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

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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

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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-

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

 

1 Earth strap, battery - body ⇒ Arrow A

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

 

2 Earth strap, gearbox - body ⇒ -arrow-

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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-

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

 

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

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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

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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

 

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

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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.

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