AUTOMOTIVE ELECTRICIANS
WIRING-DIAGRAMS

SEAT LEON 2004 – Convenience system, Anti-theft alarm system, Central locking with remote control, Front window lifter, Front interior lights, Electrically adjustable and heated exterior mirrors, Sliding/tilting sunroof . Wiring diagrams, Pin Connector, Location

    HomeSEATSEAT LEONSEAT LEON 2004SEAT LEON 2004 ALL WIRING DIAGRAMS - ENGLISH
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Wiring Diagram SEAT LEON 2004 - Door control unit - driver's side - rear window lifter isolation switch - front left window lifter switch - interior locking switch - driver's side



Wiring Diagram SEAT LEON 2004 - Door control unit - driverGet access to all wiring diagrams of the carDownload PDF file
E39Rear window lifter isolation switch
E40Front left window lifter switch
E53Window lifter switch, rear left (in console)
E55Window lifter switch, rear right (in console)
E81Window lifter switch, front right (driver's door)
E150Interior locking switch, driver's side
J386Door control unit, driver's side
L76Button illumination
S37Window lifter single fuse
V147Window lifter motor, driver's side
T10i10-pin connector, black, coupling station left A-pillar
  267 Earth connection -2-, in door wiring harness - driver's side
  B110 Connection (30, window lifter), in interior wiring harness
*Only models without electric exterior mirrors
**Only models with electric exterior mirrors

Wiring Diagram SEAT LEON 2004 - Door control unit - driver's side - central locking lock unit - driver's side - central locking warning lamp -SAFE- - door warning lamp - left



Wiring Diagram SEAT LEON 2004 - Door control unit - driverGet access to all wiring diagrams of the carDownload PDF file
F220Central locking lock unit, driver's side
J386Door control unit, driver's side
K133Central locking warning lamp -SAFE-
M27Door warning lamp, left
T10i10-pin connector, black, coupling station left A-pillar
  267 Earth connection -2-, in door wiring harness - driver's side
*Dependent on vehicle

Wiring Diagram SEAT LEON 2004 - Door control unit driver's side - mirror adjustment motor - driver's side - folding mirror motor - mirror adjustment motor - driver's side



Wiring Diagram SEAT LEON 2004 - Door control unit driverGet access to all wiring diagrams of the carDownload PDF file
J386Door control unit, driver's side
V17Mirror adjustment motor, driver's side
V121Folding mirror motor, driver's side
V149Mirror adjustment motor, driver's side
Z4Heated exterior mirror, driver's side
T8f8-pin connector, in driver's door
T10i10-pin connector, black, coupling station left A-pillar

Wiring Diagram SEAT LEON 2004 - Door control unit - driver's side - mirror adjustment switch - mirror adjustment switch illumination



Wiring Diagram SEAT LEON 2004 - Door control unit - driverGet access to all wiring diagrams of the carDownload PDF file
DIgnition/starter switch
E43Mirror adjustment switch
E48Mirror adjustment change-over switch
E231Exterior mirror heating button
E263Mirror fold system switch
J386Door control unit, driver's side
L78Mirror adjustment switch illumination
T10i10-pin connector, black, coupling station left A-pillar
  A20 Connection (15a), in dash panel wiring harness
  B145 Positive (+) connection (58b), in interior wiring harness
  B229 Connection (high bus), in interior wiring harness
  B230 Connection (low bus), in interior wiring harness
*Mirror heating exterior mirror (northern countries)
**Only models with electric exterior mirrors

Wiring Diagram SEAT LEON 2004 - Door control unit - front passenger's side - window lifter switch - in front passenger's door - central locking lock unit - front passenger's side



Wiring Diagram SEAT LEON 2004 - Door control unit - front passengerGet access to all wiring diagrams of the carDownload PDF file
E107Window lifter switch, in front passenger's door
F221Central locking lock unit, front passenger's side
J387Door control unit, front passenger's side
L53Window lifter switch light bulb
V148Window lifter motor, front passenger's side
T10k10-pin connector, black, coupling station right A-pillar
  268 Earth connection -2-, in door wiring harness - front passenger's side

Wiring Diagram SEAT LEON 2004 - Door control unit - front passenger's side - door warning lamp - right - mirror adjustment motor - front passenger's side - folding mirror motor - front passenger's side



Wiring Diagram SEAT LEON 2004 - Door control unit - front passengerGet access to all wiring diagrams of the carDownload PDF file
J387Door control unit, front passenger's side
M28Door warning lamp, right
V25Mirror adjustment motor, front passenger's side
V122Folding mirror motor, front passenger's side
V150Mirror adjustment motor, front passenger's side
Z5Heated exterior mirror, front passenger's side
T8h8-pin connector, in front passenger's door
T10k10-pin connector, black, coupling station right A-pillar
*Dependent on vehicle

Wiring Diagram SEAT LEON 2004 - Vanity mirror contact switch - driver's side - vanity mirror contact switch - front passenger's side - front interior light



Wiring Diagram SEAT LEON 2004 - Vanity mirror contact switch - driverGet access to all wiring diagrams of the carDownload PDF file
F147Vanity mirror contact switch, driver's side
F148Vanity mirror contact switch, front passenger's side
Wfront interior light
W11Reading light, rear left
W12Reading light, rear right
W13Front passenger reading light
W14Illuminated vanity mirror, front passenger's side
W19Reading light, driver's side
W20Illuminated vanity mirror, driver's side
  128 Earth connection -1-, in interior light wiring harness
  A29 Connection (interior light), in dash panel wiring harness
  B129 Connection (interior light, 311), in interior wiring harness

Wiring Diagram SEAT LEON 2004 - Convenience system central control unit



Wiring Diagram SEAT LEON 2004 - Convenience system central control unitGet access to all wiring diagrams of the carDownload PDF file
DIgnition/starter switch
E204Tank filler flap remote release switch
J...Engine control units
J234Airbag control unit
J285Control unit with display in dash panel insert
J393Convenience system central control unit
S10Fuse in fuse box/relay plate
T1010-pin connector, orange, in protective housing for connectors, on left in plenum chamber
  81 Earth connection -1-, in dash panel wiring harness
  135 Earth connection -2-, in dash panel wiring harness
  A4 Positive (+) connection (58b), in dash panel wiring harness
  A21 Connection (86s), in dash panel wiring harness
  A27 Connection (speed signal), in dash panel wiring harness
  A29 Connection (interior light), in dash panel wiring harness
  A125 Connection (crash signal), in dash panel wiring harness
  B129 Connection (interior light, 311), in interior wiring harness

Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - central locking lock unit - rear left - central locking lock unit - rear right



Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - central locking lock unit - rear left - central locking lock unit - rear rightGet access to all wiring diagrams of the carDownload PDF file
F222Central locking lock unit, rear left
F223Central locking lock unit, rear right
J393Convenience system central control unit
T10l10-pin connector, black, coupling station left B-pillar
T10m10-pin connector, black, coupling station right B-pillar

Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - contact switch in lock cylinder for tailgate/boot lid anti-theft alarm system/central locking system - central locking motor - tailgate/boot lid



Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - contact switch in lock cylinder for tailgate/boot lid anti-theft alarm system/central locking system - central locking motor - tailgate/boot lidGet access to all wiring diagrams of the carDownload PDF file
E15Heated rear window switch
E165Tailgate/boot lid release switch
F5Luggage compartment light switch
F124Contact switch in lock cylinder for tailgate/boot lid anti-theft alarm system/central locking system
J393Convenience system central control unit
V53Central locking motor, tailgate/boot lid
W3Luggage compartment light
T5a5-pin connector
T5i5-pin connector, brown, in luggage compartment
T5j5-pin connector, brown, in bootlid
T5t5-pin connector
T10i10-pin connector, black, coupling station left A-pillar
  98 Earth connection, in tailgate/boot lid wiring harness
  W8 Connection(15a), in rear wiring harness
*Mirror heating exterior mirror (northern countries)
**Only Toledo
---Only León

Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - sliding sunroof adjustment control unit - sliding sunroof adjustment regulator - sliding sunroof motor



Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - sliding sunroof adjustment control unit - sliding sunroof adjustment regulator - sliding sunroof motorGet access to all wiring diagrams of the carDownload PDF file
E2Turn signal switch
E139Sliding sunroof adjustment regulator
J245Sliding sunroof adjustment control unit
J285Control unit with display in dash panel insert
J393Convenience system central control unit
S230Fuse in fuse box
V1Sliding sunroof motor
T1616-pin connector, self-diagnosis
  A5 Positive (+) connection (right turn signal), in dash panel wiring harness
  A6 Positive (+) connection (left turn signal), in dash panel wiring harness
  A13 Connection (door contact switch), in dash panel wiring harness
  A76 Connection (diagnosis wire K), in dash panel wiring harness
  W15 Connection -1- (luggage compartment light), in rear wiring harness
---Only León

Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - bonnet contact switch - anti-theft alarm system horn



Wiring Diagram SEAT LEON 2004 - Convenience system central control unit - bonnet contact switch - anti-theft alarm system hornGet access to all wiring diagrams of the carDownload PDF file
DIgnition/starter switch
F266Bonnet contact switch
H8Anti-theft alarm system horn
J285Control unit with display in dash panel insert
J393Convenience system central control unit
R47Central locking and anti-theft alarm system
S111Fuse for anti-theft alarm system and immobilizer
S144Anti-theft alarm system/ central locking fuse
S238Fuse in fuse box
  179 Earth connection, in left headlight wiring harness
  223 Earth connection, in anti-theft alarm system wiring harness
  501 Screw connection -2- (30), on relay plate
  A2 Positive (+) connection (15), in dash panel wiring harness
  A32 Positive (+) connection (30), in dash panel wiring harness
  B156 Positive (+) connection (30a), in interior wiring harness
*Only models with maintenance intermittent extension
**Only models with immobilizer


SEAT LEON 2004 Overview of fuses

Overview of fuses
   
SEAT LEON 2004 Overview of fusesGet access to all wiring diagrams of the carDownload PDF file
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:

   
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SEAT LEON 2004 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 2004 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
 
SEAT LEON 2004 Position of fuses in fuse holder, left dash panelGet access to all wiring diagrams of the carDownload PDF file
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
 
SEAT LEON 2004 Position of fuses in fuse holder, left dash panelGet access to all wiring diagrams of the carDownload PDF file

SEAT LEON 2004 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
 
SEAT LEON 2004 Fuse on fuse holder, next to battery (up to August 2000):Get access to all wiring diagrams of the carDownload PDF file

SEAT LEON 2004 Fuse on fuse holder, next to battery (from September 2000):

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SEAT LEON 2004 Overview of coupling station and connections for wiring harness

Overview of coupling station and connections for wiring harness
   
SEAT LEON 2004 Overview of coupling station and connections for wiring harnessGet access to all wiring diagrams of the carDownload PDF file
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
SEAT LEON 2004 Overview of coupling station and connections for wiring harnessGet access to all wiring diagrams of the carDownload PDF file
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

   
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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 2004 Coupling station, right B-pillar

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SEAT LEON 2004 Coupling station on left of C-pillar

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SEAT LEON 2004 Coupling station on left of A-pillar

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SEAT LEON 2004 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.
 
SEAT LEON 2004 Coupling station in engine compartment, in left wiring harnessGet access to all wiring diagrams of the carDownload PDF file


SEAT LEON 2004 Overview of earth points in engine compartment

Overview of earth points in engine compartment
   
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file

   
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  10 Earth point, in plenum chamber ⇒ -arrow-
 
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file
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  1 Earth strap, battery - body
⇒ Arrow A
 
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file
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  2 Earth strap, gearbox - body ⇒ -arrow-
 
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file
Overview of earth points in vehicle interior
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file

   
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  78 Earth point on right B-pillar ⇒ -arrow-
 
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file
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  44 Earth point, lower part of left A-pillar ⇒ -arrow-
 
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file
  33 Earth point behind dash panel on right ⇒ -arrow-
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  45 Earth point, behind dash panel
 
SEAT LEON 2004 Overview of earth points in engine compartmentGet access to all wiring diagrams of the carDownload PDF file

SEAT LEON 2004 Overview of earth points in luggage compartment (Toledo)

Overview of earth points in luggage compartment (Toledo)
SEAT LEON 2004 Overview of earth points in luggage compartment (Toledo)Get access to all wiring diagrams of the carDownload PDF file

   
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