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SEAT LEON 2014 – Convenience system, ST, (L0L) . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2014 - Fuse holder A - Fuse holder C



Wiring Diagram  SEAT LEON 2014 - Fuse holder A - Fuse holder C https://portal-diagnostov.com/license.html
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A Battery
SA Fuse holder A
SA1 Fuse 1 in fuse holder A
SC Fuse holder C
SC6 Fuse 6 on fuse holder C
SC8 Fuse 8 on fuse holder C
SC39 Fuse 39 on fuse holder C
SC42 Fuse 42 on fuse holder C
  B316 Positive connection 2 (30a) in main wiring harness
  B318 Positive connection 4 (30a) in main wiring harness

Wiring Diagram SEAT LEON 2014 - Terminal 15 voltage supply relay - Fuse holder A - Fuse holder B - Fuse holder C



Wiring Diagram  SEAT LEON 2014 - Terminal 15 voltage supply relay - Fuse holder A - Fuse holder B - Fuse holder C https://portal-diagnostov.com/license.html
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J329 Terminal 15 voltage supply relay
SA Fuse holder A
SA4 Fuse 4 in fuse holder A
SB Fuse holder B
SB20 Fuse 20 on fuse holder B
SC Fuse holder C
SC25 Fuse 25 on fuse holder C
SC34 Fuse 34 on fuse holder C
  B278 Positive connection 2 (15a) in main wiring harness
  B319 Positive connection 5 (30a) in main wiring harness

Wiring Diagram SEAT LEON 2014 - Operating unit for window regulator in driver door - Driver door control unit



Wiring Diagram  SEAT LEON 2014 - Operating unit for window regulator in driver door - Driver door control unit https://portal-diagnostov.com/license.html
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E318 Childproof lock button
E512 Operating unit for window regulator in driver door
E710 Front driver side window regulator button
E712 Rear driver side window regulator button, in driver door
E714 Rear passenger side window regulator button, in driver door
E715 Front passenger side window regulator button, in driver door
J386 Driver door control unit
L76 Button illumination bulb
T10m 10-pin connector
T32a 32-pin connector
  205 Earth connection, in driver door wiring harness
*Only models with front and rear window regulators

Wiring Diagram SEAT LEON 2014 - Mirror adjustment changeover switch - Operating unit for window regulator in driver door - Driver door control unit



Wiring Diagram  SEAT LEON 2014 - Mirror adjustment changeover switch - Operating unit for window regulator in driver door - Driver door control unit https://portal-diagnostov.com/license.html
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E43 Mirror adjustment switch
E48 Mirror adjustment changeover switch
E231 Exterior mirror heater button
E263 Fold-in mirror switch
E512 Operating unit for window regulator in driver door
E710 Front driver side window regulator button
E715 Front passenger side window regulator button, in driver door
J386 Driver door control unit
L76 Button illumination bulb
L78 Mirror adjustment switch illumination bulb
T6x 6-pin connector
T32a 32-pin connector
  205 Earth connection, in driver door wiring harness
*Only models with front window regulators

Wiring Diagram SEAT LEON 2014 - Driver side interior locking button for central locking system - Driver door control unit - Central locking SAFELOCK function warning lamp - Driver side window regulator motor



Wiring Diagram  SEAT LEON 2014 - Driver side interior locking button for central locking system - Driver door control unit - Central locking SAFELOCK function warning lamp - Driver side window regulator motor https://portal-diagnostov.com/license.html
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E308 Driver side interior locking button for central locking system
J386 Driver door control unit
K133 Central locking SAFELOCK function warning lamp
K174 Driver side interior locking warning lamp
L76 Button illumination bulb
T3j 3-pin connector
T6v 6-pin connector
T32a 32-pin connector
V147 Driver side window regulator motor
  205 Earth connection, in driver door wiring harness
  R52 Connection (58s), in driver side door wiring harness
*Only models with front and rear window regulators
*2Only models with front window regulators

Wiring Diagram SEAT LEON 2014 - Driver door control unit - Driver side exterior mirror



Wiring Diagram  SEAT LEON 2014 - Driver door control unit - Driver side exterior mirror https://portal-diagnostov.com/license.html
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J386 Driver door control unit
L131 Driver side turn signal repeater bulb
T2k 2-pin connector, on driver side exterior mirror
T8k 8-pin connector, in driver door
T16g 16-pin connector
VX4 Driver side exterior mirror
V17 Driver side mirror adjustment motor
V121 Driver side fold-in mirror motor
V149 Driver side mirror adjustment motor
Z4 Heated exterior mirror on driver side
  107 Earth connection, in external mirror wiring harness
*Only models with electric folding exterior mirrors
*2Only models with heated exterior mirrors

Wiring Diagram SEAT LEON 2014 - Driver door control unit - Driver door lock unit



Wiring Diagram  SEAT LEON 2014 - Driver door control unit - Driver door lock unit https://portal-diagnostov.com/license.html
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F2 Driver door contact switch
F220 Driver side central locking lock unit
F241 Driver side contact switch in lock cylinder
J386 Driver door control unit
T8m 8-pin connector
T20c 20-pin connector
T27a 27-pin connector
VX21 Driver door lock unit
V56 Driver door central locking motor
V161 Driver door central locking SAFELOCK function motor
  303 Earth connection 3, in drive side door wiring harness
  370 Earth connection 5, in main wiring harness

Wiring Diagram SEAT LEON 2014 - Front passenger door control unit - Front passenger side exterior mirror



Wiring Diagram  SEAT LEON 2014 - Front passenger door control unit - Front passenger side exterior mirror https://portal-diagnostov.com/license.html
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J387 Front passenger door control unit
L132 Front passenger side turn signal repeater bulb
T2l 2-pin connector, on front passenger side exterior mirror
T4ae 4-pin connector
T8l 8-pin connector, in front passenger door
T16h 16-pin connector
VX5 Front passenger side exterior mirror
V25 Front passenger side mirror adjustment motor
V122 Front passenger side fold-in mirror motor
V150 Front passenger side mirror adjustment motor
Z5 Heated exterior mirror on front passenger side
  801 Earth connection 2, in external mirror wiring harness
*Only models with electric folding exterior mirrors
*2Only models with heated exterior mirrors
*3According to equipment

Wiring Diagram SEAT LEON 2014 - Front passenger door control unit - Front passenger door lock unit



Wiring Diagram  SEAT LEON 2014 - Front passenger door control unit - Front passenger door lock unit https://portal-diagnostov.com/license.html
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F3 Front passenger door contact switch
F221 Front passenger side central locking lock unit
J387 Front passenger door control unit
T8n 8-pin connector
T20d 20-pin connector
T27b 27-pin connector
VX22 Front passenger door lock unit
V57 Front passenger seat central locking motor
V162 Front passenger door central locking SAFELOCK function motor
  304 Earth connection 3, in front passenger side door wiring harness
  371 Earth connection 6, in main wiring harness
*According to equipment

Wiring Diagram SEAT LEON 2014 - Front passenger side window regulator button - Front passenger door control unit - Front passenger side window regulator motor



Wiring Diagram  SEAT LEON 2014 - Front passenger side window regulator button - Front passenger door control unit - Front passenger side window regulator motor https://portal-diagnostov.com/license.html
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E716 Front passenger side window regulator button
J387 Front passenger door control unit
L76 Button illumination bulb
T3k 3-pin connector
T4s 4-pin connector
T6w 6-pin connector
T20d 20-pin connector
T27b 27-pin connector
T32b 32-pin connector
V148 Front passenger side window regulator motor
  206 Earth connection, in front passenger door wiring harness
*Only models with no additional lights
*2Only models with additional lights

Wiring Diagram SEAT LEON 2014 - Driver vanity mirror contact switch - Front passenger vanity mirror contact switch - Onboard supply control unit - Left footwell light - Right footwell light - Front passenger side illuminated vanity mirror - Driver side illuminated vanity mirror



Wiring Diagram  SEAT LEON 2014 - Driver vanity mirror contact switch - Front passenger vanity mirror contact switch - Onboard supply control unit - Left footwell light - Right footwell light - Front passenger side illuminated vanity mirror - Driver side illuminated vanity mirror https://portal-diagnostov.com/license.html
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F147 Driver vanity mirror contact switch
F148 Front passenger vanity mirror contact switch
J519 Onboard supply control unit
T73a 73-pin connector
T73c 73-pin connector
W9 Left footwell light
W10 Right footwell light
W14 Front passenger side illuminated vanity mirror
W20 Driver side illuminated vanity mirror
  366 Earth connection 1, in main wiring harness
  369 Earth connection 4, in main wiring harness
  372 Earth connection 7, in main wiring harness
  375 Earth connection 10, in main wiring harness
  B340 Connection 1 (58d), in main wiring harness
  B472 Connection 8, in main wiring harness
  B559 Positive connection 1 (30g) in main wiring harness
*Only models with illuminated vanity mirror

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Front interior light - Front roof module



Wiring Diagram  SEAT LEON 2014 - Onboard supply control unit - Front interior light - Front roof module https://portal-diagnostov.com/license.html
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J519 Onboard supply control unit
T6u 6-pin connector
T73c 73-pin connector
WX1 Front interior light
W1 Front interior light
WX3 Front roof module
W13 Front passenger reading light
W15 Interior light with switch-off delay
W19 Driver side reading light
  372 Earth connection 7, in main wiring harness
  377 Earth connection 12, in main wiring harness
  B154 Connection 1 (DCt), in interior wiring harness
  B155 Connection 2 (DCt), in interior wiring harness
  B559 Positive connection 1 (30g) in main wiring harness

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Rear interior light



Wiring Diagram  SEAT LEON 2014 - Onboard supply control unit - Rear interior light https://portal-diagnostov.com/license.html
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J519 Onboard supply control unit
T3g 3-pin connector
W11 Rear left reading light
W12 Rear right reading light
W43 Rear interior light
  B155 Connection 2 (DCt), in interior wiring harness
  B559 Positive connection 1 (30g) in main wiring harness
*According to equipment

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Light for driver door ambient lighting - Light for passenger door ambient lighting



Wiring Diagram  SEAT LEON 2014 - Onboard supply control unit - Light for driver door ambient lighting - Light for passenger door ambient lighting https://portal-diagnostov.com/license.html
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J519 Onboard supply control unit
T2i 2-pin connector
T2j 2-pin connector
T2p 2-pin connector
T2q 2-pin connector
T3h 3-pin connector
T3i 3-pin connector
T3l 3-pin connector
T3m 3-pin connector
T27a 27-pin connector
T27b 27-pin connector
T73c 73-pin connector
W85 Light conductor for front passenger side background lighting
W86 Light for driver door ambient lighting
W87 Light for passenger door ambient lighting
W96 Light conductor for driver side background lighting
  267 Earth connection 2, in drive side door wiring harness
  268 Earth connection 2, in front passenger side door wiring harness
  B465 Connection 1, in main wiring harness
  B466 Connection 2, in main wiring harness
  R94 Connection 1 in driver side door wiring harness
  R95 Connection 2 in driver side door wiring harness
  R98 Connection 1 in front passenger side door wiring harness
  R99 Connection 2 in front passenger side door wiring harness
*Only models with additional lights

Wiring Diagram SEAT LEON 2014 - Button for deactivating interior monitoring and vehicle inclination sensor - Bonnet contact switch - Interior monitoring sensor - Vehicle inclination sender - Alarm horn - Onboard supply control unit



Wiring Diagram  SEAT LEON 2014 - Button for deactivating interior monitoring and vehicle inclination sensor - Bonnet contact switch - Interior monitoring sensor - Vehicle inclination sender - Alarm horn - Onboard supply control unit https://portal-diagnostov.com/license.html
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E616 Button for deactivating interior monitoring and vehicle inclination sensor
F266 Bonnet contact switch
G273 Interior monitoring sensor
G384 Vehicle inclination sender
H12 Alarm horn
J519 Onboard supply control unit
K248 Warning lamp for deactivation of interior monitoring and vehicle inclination
L118 Deactivation of interior monitoring system switch illumination bulb
T4r 4-pin connector
T46b 46-pin connector
T73a 73-pin connector
T73c 73-pin connector
  132 Earth connection 3, in engine compartment wiring harness
  167 Earth connection 4, in engine compartment wiring harness
  B549 Connection 2 (LIN bus) in main wiring harness
*For models with anti-theft alarm system
*2According to equipment

Wiring Diagram SEAT LEON 2014 - Rear driver side window regulator button - Rear driver side central locking lock unit - Onboard supply control unit - Rear driver side window regulator motor



Wiring Diagram  SEAT LEON 2014 - Rear driver side window regulator button - Rear driver side central locking lock unit - Onboard supply control unit - Rear driver side window regulator motor https://portal-diagnostov.com/license.html
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E711 Rear driver side window regulator button
F435 Rear driver side central locking lock unit
F505 Rear door contact switch, driver side
J519 Onboard supply control unit
L76 Button illumination bulb
T4p 4-pin connector
T8g 8-pin connector
T8i 8-pin connector
T10k 10-pin connector
T27c 27-pin connector
T73a 73-pin connector
V471 Rear driver side window regulator motor
V537 Rear central locking SAFELOCK function motor, driver side
V539 Rear central locking motor, driver side
*Only models with rear electric window regulator
*2According to equipment

Wiring Diagram SEAT LEON 2014 - Rear passenger side window regulator button - Rear passenger side central locking lock unit - Onboard supply control unit - Rear passenger side window regulator motor



Wiring Diagram  SEAT LEON 2014 - Rear passenger side window regulator button - Rear passenger side central locking lock unit - Onboard supply control unit - Rear passenger side window regulator motor https://portal-diagnostov.com/license.html
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E713 Rear passenger side window regulator button
F436 Rear passenger side central locking lock unit
F506 Rear door contact switch, passenger side
J519 Onboard supply control unit
L76 Button illumination bulb
T4q 4-pin connector
T8h 8-pin connector
T8j 8-pin connector
T10l 10-pin connector
T27d 27-pin connector
T73a 73-pin connector
V472 Rear passenger side window regulator motor
V538 Rear central locking SAFELOCK function motor, passenger side
V540 Rear central locking motor, passenger side
*According to equipment
*2Only models with rear electric window regulator

Wiring Diagram SEAT LEON 2014 - Rear lid handle release button - Rear lid contact switch for anti-theft alarm - Onboard supply control unit - Rear lid central locking motor - Right luggage compartment light



Wiring Diagram  SEAT LEON 2014 - Rear lid handle release button - Rear lid contact switch for anti-theft alarm - Onboard supply control unit - Rear lid central locking motor - Right luggage compartment light https://portal-diagnostov.com/license.html
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E234 Rear lid handle release button
F123 Rear lid contact switch for anti-theft alarm
J519 Onboard supply control unit
T4ag 4-pin connector
T10j 10-pin connector, brown, in rear part of roof
T73a 73-pin connector
V53 Rear lid central locking motor
W35 Right luggage compartment light
  98 Earth connection, in rear lid wiring harness
  373 Earth connection 8, in main wiring harness
  W50 Connection (rear lid contact switch), in rear wiring harness
*Only models with no anti-theft alarm system
*2For models with anti-theft alarm system

Wiring Diagram SEAT LEON 2014 - Interior mirror - Rain sensor - Onboard supply control unit



Wiring Diagram  SEAT LEON 2014 - Interior mirror - Rain sensor - Onboard supply control unit https://portal-diagnostov.com/license.html
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EX5 Interior mirror
G213 Rain sensor
G355 Humidity sender
J519 Onboard supply control unit
T8q 8-pin connector
T73a 73-pin connector
T73c 73-pin connector
Y7 Automatic anti-dazzle interior mirror
  B242 Connection (interior mirror - negative), in interior wiring harness
  B520 Connection (RL), in main wiring harness

Wiring Diagram SEAT LEON 2014 - Control unit in dash panel insert - Data bus diagnostic interface



Wiring Diagram  SEAT LEON 2014 - Control unit in dash panel insert - Data bus diagnostic interface https://portal-diagnostov.com/license.html
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J285 Control unit in dash panel insert
J533 Data bus diagnostic interface
T18a 18-pin connector
T20a 20-pin connector
  B397 Connection 1 (convenience CAN bus, high), in main wiring harness
  B406 Connection 1 (convenience CAN bus, low), in main wiring harness


SEAT LEON 2014 Overview of fuses (3, 5-doors and ST vehicle)

Overview of fuses (3, 5-doors and ST vehicle)
  Note
The fittings locations are identical on LHD and RHD models.
SEAT LEON 2014 Overview of fuses (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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q   Location, only right-hand drive models
q   Position of fuses, from September 2012:
q   Position of fuses, from June 2013:
q   Position of fuses, from November 2013:
q   Position of fuses, from September 2012:
q   Position of fuses, from June 2013:
q   Position of fuses, from September 2012:

Fuse holder A -SA-
Location:
On electronics box, on left in engine compartment
   
SEAT LEON 2014 Overview of fuses (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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SA -  Fuse holder A
SA1 -  Fuse 1 in fuse holder A ,
SA2 -  Fuse 2 in fuse holder A ,
SA3 -  Fuse 3 in fuse holder A ,
SA4 -  Fuse 4 in fuse holder A ,
SA5 -  Fuse 5 in fuse holder A ,
Back to overview

   


SEAT LEON 2014

Fuses on fuse holder A -SA- , from September 2012
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
J1A - Fuse 1 in fuse holder A -SA1- 125 A - Voltage supply of fuses:
-SC4- a -SC14- , -SC31- , -SC38- , -SC39- , -SC41- , -SC42- , -SC53-
Terminal 15 voltage supply relay -J329-
Relay for power sockets -J807-
Heated rear window relay -J9-
30
G1A - Fuse 2 in fuse holder A -SA2- 400 A - Alternator -C-
30
E1A - Fuse 3 in fuse holder A -SA3- 80 A - Power steering control unit -J500- 30
K2A - Fuse 4 in fuse holder A -SA4- 80 A - Voltage supply of fuses:
-SC3- , -SC15- a -SC21- , -SC23- a -SC28- ,-SC43- a -SC45-
Trailer voltage supply relay -J941-
30
L1A - Fuse 5 in fuse holder A -SA5- 50 A   Radiator fan control unit -J293- 30

Back to overview


SEAT LEON 2014 Fuse holder B SB

Fuse holder B -SB-
Location:
On electronics box, on left in engine compartment
   
SEAT LEON 2014 Fuse holder B SB https://portal-diagnostov.com/license.html
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A -  Fuse holder B -SB- ;
Fuse colours:
t  50 A - red
t  40 A - orange or green
t  30 A - light green
t  25 A - colourless (white)
t  20 A - yellow or blue
t  15 A - light blue
t  10 A - red
t  7.5 A - brown
t  5 A - light brown
t  3 A - purple
Back to overview

   


SEAT LEON 2014

Fuses on fuse holder B -SB- , from September 2012
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
F1 - vacant - -   -
F2 - Fuse 2 on fuse holder B -SB2- 40 A - ABS control unit -J104- 30
F3 - Fuse 3 on fuse holder B -SB3- 15 A - Engine control unit -J623-
Only models with petrol engine
87
F3 - Fuse 3 on fuse holder B -SB3- 30 A - Engine control unit -J623-
Only models with diesel engine
87
F4 - Fuse 4 on fuse holder B -SB4- 10 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Activated charcoal filter solenoid valve 1 -N80-
Inlet camshaft control valve 1 -N205-
Exhaust camshaft control valve 1 -N318-
Oil pressure warning lamp -N428-
Only models with engine code CHPA and CMBA
87
F4 - Fuse 4 on fuse holder B -SB4- 5 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Low heat output relay -J359-
High heat output relay -J360-
Charge pressure control solenoid valve -N75-
Only models with diesel engine
87
F4 - Fuse 4 on fuse holder B -SB4- 10 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Turbocharger air recirculation valve -N249-
Intake manifold flap valve -N316-
Valve for oil pressure control -N428-
Piston cooling jet control valve -N522-
Only models with engine code CJSA
87
F4 - Fuse 4 on fuse holder B -SB4- 10 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Activated charcoal filter solenoid valve 1 -N80-
Camshaft control valve 1 -N205-
Only models with engine code CJZA and CJZB
87
F5 - Fuse 5 on fuse holder B -SB5- 10 A - Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Only models with diesel engine
87
F5 - Fuse 5 on fuse holder B -SB5- 10 A - Actuator 1 for camshaft adjustment -F366-
Actuator 2 for camshaft adjustment -F367-
Actuator 3 for camshaft adjustment -F368-
Actuator 4 for camshaft adjustment -F369-
Actuator 5 for camshaft adjustment -F370-
Actuator 6 for camshaft adjustment -F371-
Actuator 7 for camshaft adjustment -F372-
Actuator 8 for camshaft adjustment -F373-
Engine component current supply relay -J757-
Injector 2, cylinder 1 -N532-
Injector 2, cylinder 2 -N533-
Injector 2, cylinder 3 -N534-
Injector 2, cylinder 4 -N535-
Only models with engine code CJSA
87
F6 - Fuse 6 on fuse holder B -SB6- 5 A - Brake pedal position sender -G100- 87
F7 - Fuse 7 on fuse holder B -SB7- 5 A - Coolant shut-off valve -N82-
Only models with engine code CJSA
87
F7 - Fuse 7 on fuse holder B -SB7- 10 A - Fuel pressure regulating valve -N276-
Continued coolant circulation pump -V51-
Only models with engine code CHPA, CJZA, CJZB and CMBA
87
F7 - Fuse 7 on fuse holder B -SB7- 10 A - Oil pressure warning lamp -N428-
Coolant valve for cylinder head -N489-
Charge air cooling pump -V188-
Heating assistant pump -V488-
Only models with diesel engine
87
F8 - Fuse 8 on fuse holder B -SB8- 15 A - Lambda probe heater -Z19-
Lambda probe 1 heater after catalytic converter -Z29-
Only models with petrol engine
87
F8 - Fuse 8 on fuse holder B -SB8- 15 A - Lambda probe heater -Z19-
Only models with diesel engine
87
F9 - Fuse 9 on fuse holder B -SB9- 20 A - Ignition coil 1 with output stage -N70-
Ignition coil 2 with output stage -N127-
Ignition coil 3 with output stage -N291-
Ignition coil 4 with output stage -N292-
Only models with engine code CHPA, CJZA, CJZB and CMBA
87
F9 - Fuse 9 on fuse holder B -SB9- 10 A - Activated charcoal filter solenoid valve 1 -N80-
Camshaft control valve 1 -N205-
Exhaust camshaft control valve 1 -N318-
Continued coolant circulation pump -V51-
Only models with engine code CJSA
87
F9 - Fuse 9 on fuse holder B -SB9- 5 A - Air mass meter -G70-
Automatic glow period control unit -J179-
Intake manifold preheating heater element -N51-
Only models with diesel engine
87
F10 - Fuse 10 on fuse holder B -SB10- 15 A - Fuel pump control unit -J538-
Only models with petrol engine
87
F10 - Fuse 10 on fuse holder B -SB10- 20 A - Fuel pump control unit -J538-
Only models with diesel engine
87
F11 - Fuse 11 on fuse holder B -SB11- 40 A - Auxiliary heater element -Z35- 87
F12 - Fuse 12 on fuse holder B -SB12- 40 A - Auxiliary heater element -Z35- 87
F13 - Fuse 13 on fuse holder B -SB13- 30 A - Mechatronic unit for dual clutch gearbox -J743-
Only models with dual clutch gearbox 0CW
30
F13 - Fuse 13 on fuse holder B -SB13- 15 A - Mechatronic unit for dual clutch gearbox -J743-
Only models with dual clutch gearbox 0D9
30
F14 - vacant - -   -
F15 - Fuse 15 on fuse holder B -SB15- 15 A - Treble tone horn -H2-
Bass tone horn -H7-
Horn relay -J413-
30
F16 - Fuse 16 on fuse holder B -SB16- 20 A - Ignition coil 1 with output stage -N70-
Ignition coil 2 with output stage -N127-
Ignition coil 3 with output stage -N291-
Ignition coil 4 with output stage -N292-
Only models with engine code CJSA
87
F17 - Fuse 17 on fuse holder B -SB17- 7.5 A - Main relay -J271-
Terminal 30 voltage supply relay -J317-
Engine control unit -J623-
ABS control unit -J104-
30
F18 - Fuse 18 on fuse holder B -SB18- 5 A - Battery monitor control unit​ -J367-
Only models with stop/start system
30
F18 - Fuse 18 on fuse holder B -SB18- 5 A - Data bus diagnostic interface -J533-
Only models with no start/stop system
30
F19 - Fuse 19 on fuse holder B -SB19- 30 A - Wiper motor control unit -J400- 30
F20 - Fuse 20 on fuse holder B -SB20- 10 A - Alarm horn -H12- 30
F21 - Fuse 21 on fuse holder B -SB21- 20 A - ABS control unit -J104- 30
F22 - Fuse 22 on fuse holder B -SB22- 5 A - Engine control unit -J623- 50
F23 - Fuse 23 on fuse holder B -SB23- 30 A - Starter -B- 50
F24 - Fuse 24 on fuse holder B -SB24- 40 A - Auxiliary heater element -Z35- 87
F31 - vacant - -   -
F32 - vacant - -   -
F33 - vacant - -   -
F34 - vacant - -   -
F35 - vacant - -   -
F36 - vacant - -   -
F37 - vacant - -   -
F38 - vacant - -   -

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SEAT LEON 2014

Fuses on fuse holder B -SB- , from June 2013
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
F1 - Fuse 1 on fuse holder B -SB1- 20 A - ABS control unit -J104- According to equipment 30
F1 - Fuse 1 on fuse holder B -SB1- 40 A - ABS control unit -J104- According to equipment 30
F2 - Fuse 2 on fuse holder B -SB2- 40 A - ABS control unit -J104- 30
F3 - Fuse 3 on fuse holder B -SB3- 15 A - Engine control unit -J623-
Only models with petrol engine
87
F3 - Fuse 3 on fuse holder B -SB3- 30 A - Engine control unit -J623-
Only models with diesel engine
87
F4 - Fuse 4 on fuse holder B -SB4- 10 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Activated charcoal filter solenoid valve 1 -N80-
Inlet camshaft control valve 1 -N205-
Exhaust camshaft control valve 1 -N318-
Oil pressure warning lamp -N428-
Only models with engine code CHPA, CMBA und CXSA
87
F4 - Fuse 4 on fuse holder B -SB4- 5 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Low heat output relay -J359-
High heat output relay -J360-
Charge pressure control solenoid valve -N75-
Only models with diesel engine
87
F4 - Fuse 4 on fuse holder B -SB4- 10 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Turbocharger air recirculation valve -N249-
Intake manifold flap valve -N316-
Valve for oil pressure control -N428-
Piston cooling jet control valve -N522-
Only models with engine code CJSA
87
F4 - Fuse 4 on fuse holder B -SB4- 10 A - Oil level and oil temperature sender -G266-
Radiator fan control unit -J293-
Activated charcoal filter solenoid valve 1 -N80-
Camshaft control valve 1 -N205-
Only models with engine code CJZA and CJZB
87
F5 - Fuse 5 on fuse holder B -SB5- 10 A - Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Only models with diesel engine
87
F5 - Fuse 5 on fuse holder B -SB5- 10 A   Camshaft control valve 1 -N205-
Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Only models with diesel engine EU6+
87
F5 - Fuse 5 on fuse holder B -SB5- 10 A - Actuator 1 for camshaft adjustment -F366-
Actuator 2 for camshaft adjustment -F367-
Actuator 3 for camshaft adjustment -F368-
Actuator 4 for camshaft adjustment -F369-
Actuator 5 for camshaft adjustment -F370-
Actuator 6 for camshaft adjustment -F371-
Actuator 7 for camshaft adjustment -F372-
Actuator 8 for camshaft adjustment -F373-
Engine component current supply relay -J757-
Injector 2, cylinder 1 -N532-
Injector 2, cylinder 2 -N533-
Injector 2, cylinder 3 -N534-
Injector 2, cylinder 4 -N535-
Only models with engine code CJSA
87
F6 - Fuse 6 on fuse holder B -SB6- 5 A - Brake pedal position sender -G100- 87
F7 - Fuse 7 on fuse holder B -SB7- 5 A - Coolant shut-off valve -N82-
Only models with engine code CJSA
87
F7 - Fuse 7 on fuse holder B -SB7- 10 A - Fuel pressure regulating valve -N276-
Continued coolant circulation pump -V51-
Only models with engine code CHPA, CJZA, CJZB, CMBA and CXSA
87
F7 - Fuse 7 on fuse holder B -SB7- 10 A - Oil pressure warning lamp -N428-
Coolant valve for cylinder head -N489-
Charge air cooling pump -V188-
Heating assistant pump -V488-
Only models with diesel engine
87
F8 - Fuse 8 on fuse holder B -SB8- 15 A - Lambda probe heater -Z19-
Lambda probe 1 heater after catalytic converter -Z29-
Only models with petrol engine and diesel engine EU6+
87
F8 - Fuse 8 on fuse holder B -SB8- 15 A - Lambda probe heater -Z19-
Only models with diesel engine EU5+
87
F9 - Fuse 9 on fuse holder B -SB9- 20 A - Ignition coil 1 with output stage -N70-
Ignition coil 2 with output stage -N127-
Ignition coil 3 with output stage -N291-
Ignition coil 4 with output stage -N292-
Only models with engine code CHPA, CJZA, CJZB, CMBA and CXSA
87
F9 - Fuse 9 on fuse holder B -SB9- 10 A - Activated charcoal filter solenoid valve 1 -N80-
Camshaft control valve 1 -N205-
Exhaust camshaft control valve 1 -N318-
Continued coolant circulation pump -V51-
Only models with engine code CJSA
87
F9 - Fuse 9 on fuse holder B -SB9- 5 A - Air mass meter -G70-
Automatic glow period control unit -J179-
Intake manifold preheating heater element -N51-
Only models with diesel engine
87
F10 - Fuse 10 on fuse holder B -SB10- 15 A - Fuel pump control unit -J538-
Only models with petrol engine
87
F10 - Fuse 10 on fuse holder B -SB10- 20 A - Fuel pump control unit -J538-
Only models with diesel engine
87
F11 - Fuse 11 on fuse holder B -SB11- 40 A - Auxiliary heater element -Z35- 87
F12 - Fuse 12 on fuse holder B -SB12- 40 A - Auxiliary heater element -Z35- 87
F13 - Fuse 13 on fuse holder B -SB13- 30 A - Mechatronic unit for dual clutch gearbox -J743-
Only models with dual clutch gearbox 0CW
30
F13 - Fuse 13 on fuse holder B -SB13- 15 A - Mechatronic unit for dual clutch gearbox -J743-
Only models with dual clutch gearbox 0D9
30
F14 - vacant - -   -
F15 - Fuse 15 on fuse holder B -SB15- 15 A - Treble tone horn -H2-
Bass tone horn -H7-
Horn relay -J413-
30
F16 - Fuse 16 on fuse holder B -SB16- 20 A - Ignition coil 1 with output stage -N70-
Ignition coil 2 with output stage -N127-
Ignition coil 3 with output stage -N291-
Ignition coil 4 with output stage -N292-
Only models with engine code CJSA
87
F17 - Fuse 17 on fuse holder B -SB17- 7.5 A - Main relay -J271-
Terminal 30 voltage supply relay -J317-
Engine control unit -J623-
ABS control unit -J104-
30
F18 - Fuse 18 on fuse holder B -SB18- 5 A - Battery monitor control unit​ -J367-
Only models with stop/start system
30
F18 - Fuse 18 on fuse holder B -SB18- 5 A - Data bus diagnostic interface -J533-
Only models with no start/stop system
30
F19 - Fuse 19 on fuse holder B -SB19- 30 A - Wiper motor control unit -J400- 30
F20 - Fuse 20 on fuse holder B -SB20- 10 A - Alarm horn -H12- 30
F21 - vacant - -    
F22 - Fuse 22 on fuse holder B -SB22- 5 A - Engine control unit -J623- 50
F23 - Fuse 23 on fuse holder B -SB23- 30 A - Starter -B- 50
F24 - Fuse 24 on fuse holder B -SB24- 40 A - Auxiliary heater element -Z35- 87
F31 - vacant - -   -
F32 - vacant - -   -
F33 - vacant - -   -
F34 - vacant - -   -
F35 - vacant - -   -
F36 - vacant - -   -
F37 - vacant - -   -
F38 - vacant - -   -

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SEAT LEON 2014 Fuse holder C SC

Fuse holder C -SC-
Location, only left-hand drive models:
on left under dash panel
   
SEAT LEON 2014 Fuse holder C SC https://portal-diagnostov.com/license.html
https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO
Get access to all wiring diagrams of the carDownload PDF file
A -  Fuse holder C -SC- ;
Fuse colours:
t  50 A - red
t  40 A - orange
t  30 A - light green
t  25 A - colourless (white)
t  20 A - yellow
t  15 A - light blue
t  10 A - red
t  7.5 A - brown
t  5 A - light brown
t  3 A - purple
t  1 A - black
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SEAT LEON 2014 Fuse holder C SC

Fuse holder C -SC-
Location, only right-hand drive models:
on left under dash panel
   
SEAT LEON 2014 Fuse holder C SC https://portal-diagnostov.com/license.html
https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO
Get access to all wiring diagrams of the carDownload PDF file
A -  Fuse holder C -SC- ;
Fuse colours:
t  50 A - red
t  40 A - orange
t  30 A - light green
t  25 A - colourless (white)
t  20 A - yellow
t  15 A - light blue
t  10 A - red
t  7.5 A - brown
t  5 A - light brown
t  3 A - purple
t  1 A - black
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SEAT LEON 2014

Fuses on fuse holder C -SC- , from September 2012
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
F1 - vacant - -   -
F2 - vacant - -   -
F3 - vacant - - -
F4 - Fuse 4 on fuse holder C -SC4- 10 A - Onboard supply control unit -J519-
t  Anti-theft alarm system
30
F5 - Fuse 5 on fuse holder C -SC5- 5 A - Data bus diagnostic interface -J533- 30
F6 - Fuse 6 on fuse holder C -SC6- 5 A - Interior monitoring sensor -G273-
Vehicle inclination sender -G384-
30
F7 - Fuse 7 on fuse holder C -SC7- 10 A - Heated rear window relay -J9-
Heater control unit -J65-
Climatronic control unit -J255-
Air conditioning system control unit​ -J301-
30
F8 - Fuse 8 on fuse holder C -SC8- 10 A - Light switch -E1-
Rain sensor -G213-
Air humidity sensor -G355-
Diagnosis connection -U31-
30
F9 - vacant - -   -
F10 - Fuse 10 on fuse holder C -SC10- 10 A - Display unit of control unit for front display and information control panel -J685- 30
F11 - vacant - -   -
F12 - Fuse 12 on fuse holder C -SC12- 20 A - Control unit 1 for information electronics -J794-
Radio -R-
30
F13 - vacant - -   -
F14 - Fuse 14 on fuse holder C -SC14- 40 A - Fresh air blower control unit -J126- 30
F15 - vacant - -   -
F16 - vacant - -   -
F17 - Fuse 17 on fuse holder C -SC17- 5 A - Control unit in dash panel insert -J285- 30
F18 - vacant - -   -
F19 - vacant - - -
F20 - vacant - -   -
F21 - vacant - -   -
F22 - vacant - - -
F23 - Fuse 23 on fuse holder C -SC23- 40 A - Onboard supply control unit -J519-
t  Right​ headlight -MX2-
30
F24 - Fuse 24 on fuse holder C -SC24- 30 A - Sliding sunroof adjustment control unit -J245- 30
F25 - Fuse 25 on fuse holder C -SC25- 30 A - Driver door control unit -J386-
Rear driver side window regulator motor -V471-
30
F26 - Fuse 26 on fuse holder C -SC26- 20 A - Onboard supply control unit -J519-
t  Front heated seats
30
F27 - vacant - -   -
F28 - vacant - -   -
F29 - vacant - -   -
F30 - vacant - -   -
F31 - Fuse 31 on fuse holder C -SC31- 40 A - Onboard supply control unit -J519-
t  Left headlight -MX1-
30
F32 - Fuse 32 on fuse holder C -SC32- 7.5 A - Park assist steering control unit -J446- 15
F33 - Fuse 33 on fuse holder C -SC33- 5 A - Airbag control unit -J234-
Front passenger side airbag deactivated warning lamp -K145-
15
F34 - Fuse 34 on fuse holder C -SC34- 7.5 A - Light switch -E1-
Fog light switch -E7-
Rear fog light switch -E18-
Interior mirror -EX5-
Tyre pressure monitor button -E226-
Reversing light switch -F4-
Air quality sensor -G238-
Humidity sender in fresh air intake duct -G657-
Pressure sender for refrigerant circuit -G805-
Relay for power sockets -J807-
Control unit for structure-borne sound -J869-
Automatic anti-dazzle interior mirror -Y7-
15
F35 - Fuse 35 on fuse holder C -SC35- 10 A - Headlight range control regulator -E102-
Headlight range control unit -J431-
Diagnosis connection -U31-
Left headlight range control motor -V48-
Right headlight range control motor -V49-
15
F36 - Fuse 36 on fuse holder C -SC36- 10 A - Lane departure warning control unit -J759-
Front camera for driver assist systems -R242-
15
F37 - vacant - -   -
F38 - vacant - -   -
F39 - Fuse 39 on fuse holder C -SC39- 30 A - Front passenger door control unit -J387-
Rear passenger side window regulator motor -V472-
30
F40 - Fuse 40 on fuse holder C -SC40- 20 A - 12 V socket -U5-
87
F41 - Fuse 41 on fuse holder C -SC41- 1 A - Steering column electronics control unit -J527- 30
F42 - Fuse 42 on fuse holder C -SC42- 40 A - Onboard supply control unit -J519-
t  Central locking
30
F43 - Fuse 43 on fuse holder C -SC43- 30 A - Onboard supply control unit -J519- 30
F44 - vacant - -   -
F45 - vacant - -   -
F46 - vacant - -   -
F47 - Fuse 47 on fuse holder C -SC47- 15 A - Rear window wiper motor -V12- 15
F48 - vacant - - -
F49 - Fuse 49 on fuse holder C -SC49- 5 A - Clutch position sender -G476-
Starter motor relay 1 -J906-
Starter motor relay 2 -J907-
15
F50 - vacant - -   -
F51 - vacant - -   -
F52 - vacant - - -
F53 - Fuse 53 on fuse holder C -SC53- 30 A - Window aerial suppression filter -C18-
Suppression filter -C24-
Heated rear window relay -J9-
Heated rear window -Z1-
87

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SEAT LEON 2014

Fuses on fuse holder C -SC- , from June 2013
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
F1 - vacant - -   -
F2 - vacant - -   -
F3 - vacant - - -
F4 - vacant - - -
F5 - Fuse 5 on fuse holder C -SC5- 5 A - Data bus diagnostic interface -J533- 30
F6 - Fuse 6 on fuse holder C -SC6- 5 A - Interior monitoring sensor -G273-
Vehicle inclination sender -G384-
30
F7 - Fuse 7 on fuse holder C -SC7- 10 A - Heated rear window relay -J9-
Heater control unit -J65-
Climatronic control unit -J255-
Air conditioning system control unit​ -J301-
30
F8 - Fuse 8 on fuse holder C -SC8- 10 A - Light switch -E1-
Rain sensor -G213-
Air humidity sensor -G355-
Diagnosis connection -U31-
30
F9 - vacant - -   -
F10 - Fuse 10 on fuse holder C -SC10- 10 A - Display unit of control unit for front display and information control panel -J685- 30
F11 - vacant - -   -
F12 - Fuse 12 on fuse holder C -SC12- 20 A - Control unit 1 for information electronics -J794-
Radio -R-
30
F13 - vacant - -   -
F14 - Fuse 14 on fuse holder C -SC14- 40 A - Fresh air blower control unit -J126- 30
F15 - vacant - -   -
F16 - vacant - -   -
F17 - Fuse 17 on fuse holder C -SC17- 5 A - Control unit in dash panel insert -J285- 30
F18 - vacant - -   -
F19 - vacant - - -
F20 - vacant - -   -
F21 - vacant - -   -
F22 - vacant - - -
F23 - Fuse 23 on fuse holder C -SC23- 40 A - Onboard supply control unit -J519-
t  Right​ headlight -MX2-
30
F24 - Fuse 24 on fuse holder C -SC24- 30 A - Sliding sunroof adjustment control unit -J245- (only 3 and 5-doors vehicle) 30
F24 - Fuse 24 on fuse holder C -SC24- 30 A - Sliding sunroof adjustment control unit -J245-
Sunroof roller blind control unit -J394-
(only ST vehicle)
30
F25 - Fuse 25 on fuse holder C -SC25- 30 A - Driver door control unit -J386-
Rear driver side window regulator motor -V471-
30
F26 - Fuse 26 on fuse holder C -SC26- 20 A - Onboard supply control unit -J519-
t  Front heated seats
30
F27 - vacant - -   -
F28 - Fuse 28 on fuse holder C -SC28- 20 A - Trailer detector control unit -J345- 30
F29 - vacant - -   -
F30 - vacant - -   -
F31 - Fuse 31 on fuse holder C -SC31- 40 A - Onboard supply control unit -J519-
t  Left headlight -MX1-
30
F32 - Fuse 32 on fuse holder C -SC32- 7.5 A - Park assist steering control unit -J446- 15
F33 - Fuse 33 on fuse holder C -SC33- 5 A - Airbag control unit -J234-
Front passenger side airbag deactivated warning lamp -K145-
15
F34 - Fuse 34 on fuse holder C -SC34- 7.5 A - Light switch -E1-
Fog light switch -E7-
Rear fog light switch -E18-
Interior mirror -EX5-
Tyre pressure monitor button -E226-
Reversing light switch -F4-
Air quality sensor -G238-
Humidity sender in fresh air intake duct -G657-
Pressure sender for refrigerant circuit -G805-
Relay for power sockets -J807-
Control unit for structure-borne sound -J869-
Automatic anti-dazzle interior mirror -Y7-
15
F35 - Fuse 35 on fuse holder C -SC35- 10 A - Headlight range control regulator -E102-
Headlight range control unit -J431-
Diagnosis connection -U31-
Left headlight range control motor -V48-
Right headlight range control motor -V49-
15
F36 - Fuse 36 on fuse holder C -SC36- 10 A - Lane departure warning control unit -J759-
Front camera for driver assist systems -R242-
15
F37 - vacant - -   -
F38 - Fuse 38 on fuse holder C -SC38- 20 A - Trailer detector control unit -J345- 30
F39 - Fuse 39 on fuse holder C -SC39- 30 A - Front passenger door control unit -J387-
Rear passenger side window regulator motor -V472-
30
F40 - Fuse 40 on fuse holder C -SC40- 20 A - 12 V socket -U5-
(only 3 and 5-doors vehicle)
87
F40 - Fuse 40 on fuse holder C -SC40- 20 A - 12 V socket -U5-
12 V socket 2 -U18-
(only ST vehicle)
87
F41 - Fuse 41 on fuse holder C -SC41- 1 A - Steering column electronics control unit -J527- 30
F42 - Fuse 42 on fuse holder C -SC42- 40 A - Onboard supply control unit -J519-
t  Central locking
30
F43 - Fuse 43 on fuse holder C -SC43- 30 A - Onboard supply control unit -J519- 30
F44 - Fuse 44 on fuse holder C -SC44- 15 A - Trailer detector control unit -J345- 30
F45 - vacant - -   -
F46 - vacant - -   -
F47 - Fuse 47 on fuse holder C -SC47- 15 A - Rear window wiper motor -V12- 15
F48 - Fuse 48 on fuse holder C -SC48- 15 A - Trailer socket -U10- (only 3 and 5-doors vehicle) 15
F48 - Fuse 48 on fuse holder C -SC48- 30 A - Trailer socket -U10- (only ST vehicle) 15
F49 - Fuse 49 on fuse holder C -SC49- 5 A - Clutch position sender -G476-
Starter motor relay 1 -J906-
Starter motor relay 2 -J907-
15
F50 - vacant - -   -
F51 - vacant - -   -
F52 - vacant - - -
F53 - Fuse 53 on fuse holder C -SC53- 30 A - Window aerial suppression filter -C18-
Suppression filter -C24-
Heated rear window relay -J9-
Heated rear window -Z1-
87

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SEAT LEON 2014

Fuses on fuse holder C -SC- , from November 2013
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
F1 - vacant - -   -
F2 - vacant - -   -
F3 - vacant - - -
F4 - vacant - - -
F5 - Fuse 5 on fuse holder C -SC5- 5 A - Data bus diagnostic interface -J533- 30
F6 - Fuse 6 on fuse holder C -SC6- 5 A - Interior monitoring sensor -G273-
Vehicle inclination sender -G384-
30
F7 - Fuse 7 on fuse holder C -SC7- 10 A - Heated rear window relay -J9-
Heater control unit -J65-
Climatronic control unit -J255-
Air conditioning system control unit​ -J301-
30
F8 - Fuse 8 on fuse holder C -SC8- 10 A - Light switch -E1-
Rain sensor -G213-
Air humidity sensor -G355-
Diagnosis connection -U31-
30
F9 - vacant - -   -
F10 - Fuse 10 on fuse holder C -SC10- 10 A - Display unit of control unit for front display and information control panel -J685- 30
F11 - vacant - -   -
F12 - Fuse 12 on fuse holder C -SC12- 20 A - Control unit 1 for information electronics -J794-
Radio -R-
30
F13 - Fuse 13 on fuse holder C -SC13- 15 A - Electronically controlled damping control unit -J250- 30
F14 - Fuse 14 on fuse holder C -SC14- 30 A - Fresh air blower control unit -J126- 30
F15 - vacant - -   -
F16 - vacant - -   -
F17 - Fuse 17 on fuse holder C -SC17- 5 A - Control unit in dash panel insert -J285- 30
F18 - vacant - -   -
F19 - vacant - - -
F20 - vacant - -   -
F21 - Fuse 21 on fuse holder C -SC21- 15 A - All-wheel drive control unit -J492- 30
F22 - vacant - - -
F23 - Fuse 23 on fuse holder C -SC23- 40 A - Onboard supply control unit -J519-
t  Right​ headlight -MX2-
30
F24 - Fuse 24 on fuse holder C -SC24- 30 A - Sliding sunroof adjustment control unit -J245- (only 3 and 5-doors vehicle) 30
F24 - Fuse 24 on fuse holder C -SC24- 30 A - Sliding sunroof adjustment control unit -J245-
Sunroof roller blind control unit -J394-
(only ST vehicle)
30
F25 - Fuse 25 on fuse holder C -SC25- 30 A - Driver door control unit -J386-
Rear driver side window regulator motor -V471-
30
F26 - Fuse 26 on fuse holder C -SC26- 20 A - Onboard supply control unit -J519-
t  Front heated seats
30
F27 - Fuse 27 on fuse holder C -SC27- 20 A - Trailer voltage supply relay -J941-
Trailer socket -U10-
30
F28 - Fuse 28 on fuse holder C -SC28- 20 A - Trailer detector control unit -J345- 30
F29 - vacant - -   -
F30 - vacant - -   -
F31 - Fuse 31 on fuse holder C -SC31- 40 A - Onboard supply control unit -J519-
t  Left headlight -MX1-
30
F32 - Fuse 32 on fuse holder C -SC32- 7.5 A - Park assist steering control unit -J446- 15
F33 - Fuse 33 on fuse holder C -SC33- 5 A - Airbag control unit -J234-
Front passenger side airbag deactivated warning lamp -K145-
15
F34 - Fuse 34 on fuse holder C -SC34- 7.5 A - Light switch -E1-
Fog light switch -E7-
Rear fog light switch -E18-
Interior mirror -EX5-
Tyre pressure monitor button -E226-
Reversing light switch -F4-
Air quality sensor -G238-
Humidity sender in fresh air intake duct -G657-
Pressure sender for refrigerant circuit -G805-
Relay for power sockets -J807-
Control unit for structure-borne sound -J869-
Automatic anti-dazzle interior mirror -Y7-
15
F35 - Fuse 35 on fuse holder C -SC35- 10 A - Headlight range control regulator -E102-
Headlight range control unit -J431-
Diagnosis connection -U31-
Left headlight range control motor -V48-
Right headlight range control motor -V49-
15
F36 - Fuse 36 on fuse holder C -SC36- 10 A - Lane departure warning control unit -J759-
Front camera for driver assist systems -R242-
15
F37 - vacant - -   -
F38 - Fuse 38 on fuse holder C -SC38- 20 A - Trailer detector control unit -J345- 30
F39 - Fuse 39 on fuse holder C -SC39- 30 A - Front passenger door control unit -J387-
Rear passenger side window regulator motor -V472-
30
F40 - Fuse 40 on fuse holder C -SC40- 20 A - 12 V socket -U5-
(only 3 and 5-doors vehicle)
87
F40 - Fuse 40 on fuse holder C -SC40- 20 A - 12 V socket -U5-
12 V socket 2 -U18-
(only ST vehicle)
87
F41 - Fuse 41 on fuse holder C -SC41- 1 A - Steering column electronics control unit -J527- 30
F42 - Fuse 42 on fuse holder C -SC42- 40 A - Onboard supply control unit -J519-
t  Central locking
30
F43 - Fuse 43 on fuse holder C -SC43- 30 A - Onboard supply control unit -J519- 30
F44 - Fuse 44 on fuse holder C -SC44- 15 A - Trailer detector control unit -J345- 30
F45 - vacant - -   -
F46 - vacant - -   -
F47 - Fuse 47 on fuse holder C -SC47- 15 A - Rear window wiper motor -V12- 15
F48 - vacant - -   -
F48 - vacant - -   -
F49 - Fuse 49 on fuse holder C -SC49- 5 A - Clutch position sender -G476-
Starter motor relay 1 -J906-
Starter motor relay 2 -J907-
15
F50 - vacant - -   -
F51 - vacant - -   -
F52 - vacant - - -
F53 - Fuse 53 on fuse holder C -SC53- 30 A - Window aerial suppression filter -C18-
Suppression filter -C24-
Heated rear window relay -J9-
Heated rear window -Z1-
87

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SEAT LEON 2014 Overview of relay (3, 5-doors and ST vehicle)

Overview of relay (3, 5-doors and ST vehicle)
  Note
The fittings locations are identical on LHD and RHD models.
SEAT LEON 2014 Overview of relay (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO
Get access to all wiring diagrams of the carDownload PDF file
1 - 
q   Position of relays, only right-hand drive models:
q  
2 -  Relay carrier on electronics box
q   on left in engine compartment
q   Components: -J179- , -J271- , -J317- , -J359- , -J360- , -J413- , -J757- , -J906- , -J907-
q   Position of relays:

   
Relay assignment on E-box
SEAT LEON 2014 Overview of relay (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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1 -  Automatic glow period control unit -J179-
q   Position A6
q   Only models with diesel engine
2 -  Low heat output relay -J359-
q   Position A7
3 -  vacant
q   Position A10
4 -  Starter motor relay 2 -J907-
q   Position A2
5 -  Starter motor relay 1 -J906-
q   Position A1
6 -  Horn relay -J413-
q   Position A3
7 -  High heat output relay -J360-
q   Position A4
8 -  Main relay -J271-
q   Position A5
q   Only models with petrol engine
8 -  Terminal 30 voltage supply relay -J317-
q   Position A5
q   Only models with diesel engine
9 -  Engine component current supply relay -J757-
q   Position A8
q   Engine code CJSA
10 -  vacant
q   Position A9
Back to overview

   


SEAT LEON 2014 Position of relays under dash panel, only left-hand drive models

Position of relays under dash panel, only left-hand drive models
SEAT LEON 2014 Position of relays under dash panel, only left-hand drive models https://portal-diagnostov.com/license.html
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1 -  Trailer voltage supply relay -J941-
q   Position B1
2 -  vacant
q   Position B2
3 -  vacant
q   Position B3
4 -  Relay for power sockets -J807-
q   Position B6
5 -  Heated rear window relay -J9-
q   Position B5
6 -  Terminal 15 voltage supply relay -J329-
q   Position B4
Back to overview

   


SEAT LEON 2014

Position of relays under dash panel, only right-hand drive models
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
1 -  Trailer voltage supply relay -J941-
q   Position B1
2 -  vacant
q   Position B2
3 -  vacant
q   Position B3
4 -  Relay for power sockets -J807-
q   Position B6
5 -  Heated rear window relay -J9-
q   Position B5
6 -  Terminal 15 voltage supply relay -J329-
q   Position B4
Back to overview

   


SEAT LEON 2014

Control units overview (3, 5-doors and ST vehicle)
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
q   Fitting location and pin connectors, (only ST vehicle):
q   Fitting location and pin connectors for diesel engines:



SEAT LEON 2014

Headlight range control unit -J431-
Location:
behind dash panel, left
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
A -  Headlight range control unit -J431-
A1 -  26-pin connector -T26a-
Back to overview



SEAT LEON 2014

Data bus diagnostic interface -J533-
Location:
under the dash panel.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Data bus diagnostic interface -J533-
A1 -  20-pin connector -T20a-
Back to overview



SEAT LEON 2014

Front passenger door control unit -J387-
Location:
on the front passenger door.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
A -  Front passenger door control unit -J387-
A1 -  6-pin connector -T6w-
A2 -  20-pin connector -T20d-
A3 -  16-pin connector -T16h-
A4 -  32-pin connector -T32b-
Back to overview



SEAT LEON 2014

Air conditioning system control unit​ -J301-
Location:
on the dash panel - centre
   
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A -  Air conditioning system control unit​ -J301-
A1 -  16-pin connector -T16b-
A2 -  20-pin connector -T20b-
Back to overview



SEAT LEON 2014

Climatronic control unit -J255-
Location:
on the dash panel - centre
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Climatronic control unit -J255-
A1 -  16-pin connector -T16c-
A2 -  16-pin connector -T16d-
A3 -  20-pin connector -T20b-
Back to overview



SEAT LEON 2014

Front camera for driver assist systems -R242-
Location:
near interior mirror
   
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Get access to all wiring diagrams of the carDownload PDF file
A -  Front camera for driver assist systems -R242-
A1 -  12-pin connector -T12i-
Back to overview



SEAT LEON 2014

Sliding sunroof adjustment control unit -J245- (only 3 and 5-doors vehicle)
Location:
on rear sunroof motor
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Sliding sunroof adjustment control unit -J245-
A1 -  10-pin connector -T10i-
Back to overview



SEAT LEON 2014

Sliding sunroof adjustment control unit -J245- (only ST vehicle)
Location:
on front sunroof motor
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
A -  Sliding sunroof adjustment control unit -J245-
A1 -  16-pin connector -T16j-
Back to overview



SEAT LEON 2014

Electronically controlled damping control unit -J250-
Location:
behind left side trim in luggage compartment
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Electronically controlled damping control unit -J250-
A1 -  47-pin connector -T47a-
Back to overview



SEAT LEON 2014

Trailer detector control unit -J345-
Location:
behind left side trim in luggage compartment
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Trailer detector control unit -J345-
A1 -  16-pin connector -T16i-
A2 -  12-pin connector -T12j-
Back to overview



SEAT LEON 2014

All-wheel drive control unit -J492-
Location:
on differential
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  All-wheel drive control unit -J492-
A1 -  2-pin connector -T2ad-
A2 -  8-pin connector -T8w-
Back to overview



SEAT LEON 2014

Fuel pump control unit -J538- (petrol engines)
Location:
under the back seat.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Fuel pump control unit -J538-
A1 -  5-pin connector -T5j-
Back to overview



SEAT LEON 2014

Fuel pump control unit -J538- (diesel engines)
Location:
under the back seat.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Fuel pump control unit -J538-
A1 -  6-pin connector -T6ab-
Back to overview



SEAT LEON 2014

Driver door control unit -J386-
Location:
on the driver door.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
A -  Driver door control unit -J386-
A1 -  6-pin connector -T6v-
A2 -  20-pin connector -T20c-
A3 -  16-pin connector -T16g-
A4 -  32-pin connector -T32a-
Back to overview



SEAT LEON 2014

Steering column electronics control unit -J527-
Location:
on the steering column electronics.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Steering column electronics control unit -J527-
A1 -  4-pin connector -T4c-
A2 -  16-pin connector -T16e-
Back to overview



SEAT LEON 2014

Control unit in dash panel insert -J285-
Location:
on the dash panel.
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Control unit in dash panel insert -J285-
A1 -  18-pin connector -T18a-
Back to overview



SEAT LEON 2014

Onboard supply control unit -J519-
Location:
behind dash panel, left
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Onboard supply control unit -J519-
A1 -  73-pin connector -T73a-
A2 -  46-pin connector -T46b-
A3 -  73-pin connector -T73c-
Back to overview



SEAT LEON 2014

Park assist steering control unit -J446-
Location:
behind dash panel, left
   
SEAT LEON 2014 https://portal-diagnostov.com/license.html
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A -  Park assist steering control unit -J446-
A1 -  26-pin connector -T26b-
A2 -  18-pin connector -T18b-
Back to overview



SEAT LEON 2014 Airbag control unit J234

Airbag control unit -J234-
Location:
under centre console.
   
SEAT LEON 2014 Airbag control unit J234 https://portal-diagnostov.com/license.html
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A -  Airbag control unit -J234-
A1 -  90-pin connector -T90a-
Back to overview

   


SEAT LEON 2014 Overview of coupling stations (3, 5-doors and ST vehicle)

Overview of coupling stations (3, 5-doors and ST vehicle)
SEAT LEON 2014 Overview of coupling stations (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
1 -  Coupling stations on engine wiring
q   Pin connectors: -T10q- , -T14a-
q   Location:
3 - 
6 -  Coupling station on rear lid, centre
q   Pin connectors: -T10h- , -T10j-
q   Location:
9 -  Coupling station on rear driver door
q   Only models with 5-doors
q   Pin connector: -T27c-
q   Location:
10 - 
12 -  Coupling station on left A-pillar
q   Pin connectors: -T17a- , -T17b- , -T17c- , -T17d-
q   Location:
13 -  Coupling station on alternator
q   Pin connectors: -T4w- , -T8s-
q   Location:



SEAT LEON 2014 Coupling station on engine wiring

Coupling station on engine wiring
Location:
front left in engine compartment.
   
SEAT LEON 2014 Coupling station on engine wiring https://portal-diagnostov.com/license.html
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1 -  10-pin connector -T10q-
q   Only models with diesel engine
2 -  14-pin connector -T14a-
Back to overview



SEAT LEON 2014 Coupling station on front passenger door

Coupling station on front passenger door
Location:
on front passenger side A-pillar.
   
SEAT LEON 2014 Coupling station on front passenger door https://portal-diagnostov.com/license.html
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A -  27-pin connector -T27b-
Back to overview



SEAT LEON 2014 Coupling station on front passenger seat

Coupling station on front passenger seat
Location:
under front passenger seat.
   
SEAT LEON 2014 Coupling station on front passenger seat https://portal-diagnostov.com/license.html
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1 -  10-pin connector -T10p-
2 -  3-pin connector -T3b-
3 -  4-pin connector -T4a-
Back to overview



SEAT LEON 2014 Coupling station on roof wiring

Coupling station on roof wiring
Location:
Near the front roof module.
   
SEAT LEON 2014 Coupling station on roof wiring https://portal-diagnostov.com/license.html
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1 -  6-pin connector -T6q-
Back to overview



SEAT LEON 2014 Coupling station on rear passenger door

Coupling station on rear passenger door
Location:
on front passenger side B-pillar.
   
SEAT LEON 2014 Coupling station on rear passenger door https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
A -  27-pin connector -T27d-
  Note
Only models with 5-doors
Back to overview



SEAT LEON 2014 Coupling station on rear lid, centre

Coupling station on rear lid, centre
Location:
on the rear lid, centre.
   
SEAT LEON 2014 Coupling station on rear lid, centre https://portal-diagnostov.com/license.html
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1 -  10-pin connector -T10h- black
2 -  10-pin connector -T10j- brown
Back to overview



SEAT LEON 2014 Coupling station in rear bumper

Coupling station in rear bumper
Location:
in bumper.
   
SEAT LEON 2014 Coupling station in rear bumper https://portal-diagnostov.com/license.html
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1 -  6-pin connector -T6l-
Back to overview



SEAT LEON 2014 Coupling station on rear driver door

Coupling station on rear driver door
Location:
on driver side B-pillar.
   
SEAT LEON 2014 Coupling station on rear driver door https://portal-diagnostov.com/license.html
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1 -  27-pin connector -T27c-
  Note
Only models with 5-doors
Back to overview



SEAT LEON 2014 Coupling station on driver seat

Coupling station on driver seat
Location:
under driver seat.
   
SEAT LEON 2014 Coupling station on driver seat https://portal-diagnostov.com/license.html
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1 -  10-pin connector -T10n-
2 -  3-pin connector -T3a-
3 -  2-pin connector -T2a-
Back to overview



SEAT LEON 2014 Coupling station on driver door

Coupling station on driver door
Location:
on driver side A-pillar.
   
SEAT LEON 2014 Coupling station on driver door https://portal-diagnostov.com/license.html
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A -  27-pin connector -T27a-
Back to overview



SEAT LEON 2014 Coupling station on left A-pillar

Coupling station on left A-pillar
Location:
on left A-pillar.
   
SEAT LEON 2014 Coupling station on left A-pillar https://portal-diagnostov.com/license.html
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1 -  17-pin connector -T17a- brown
2 -  17-pin connector -T17b- white
3 -  17-pin connector -T17c- red
4 -  17-pin connector -T17d- blue
Back to overview



SEAT LEON 2014 Coupling station on alternator

Coupling station on alternator
Location:
front left in engine compartment.
   
SEAT LEON 2014 Coupling station on alternator https://portal-diagnostov.com/license.html
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1 -  4-pin connector -T4w-
q   Only models with engine code CHPA, CJZA, CJZB, CMBA and CXSA
1 -  8-pin connector -T8s-
q   Only models with engine code CJSA, CKFB, CKFC, CLHA, CLHB, CRMB, CRVA, CRVC, CUNA and CUPA
Back to overview



SEAT LEON 2014 Coupling station for radiator fan

Coupling station for radiator fan
Location:
on left in engine compartment.
   
SEAT LEON 2014 Coupling station for radiator fan https://portal-diagnostov.com/license.html
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1 -  4-pin connector -T4g-
Back to overview



SEAT LEON 2014 Coupling station in front bumper

Coupling station in front bumper
Location:
in bumper.
   
SEAT LEON 2014 Coupling station in front bumper https://portal-diagnostov.com/license.html
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1 -  8-pin connector -T8a-
Back to overview

   


SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle)

Earth points overview (3, 5-doors and ST vehicle)
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
   656 Earth points on right headlight
q   Location
   685 Earth point 1 at front of right longitudinal member
q   Location
   751 Earth point 2, on right A-pillar
q   Location
   638 Earth point, on right A-pillar
q   Location
   687 Earth point 1, on centre tunnel
q   Location
   75 Earth point, rear right pillar
q   Location
   666 Earth point, on rear right of roof
q   Location
   612 Earth point, in centre of rear lid
q   Location
   57 Earth point, rear left pillar
q   Location
   667 Earth point, on rear left of roof
q   Location
   690 Earth point, rear centre roof frame
q   Location
   639 Earth point, left A-pillar
q   Location
   12 Earth point, on left in engine compartment
q   Location
   671 Earth point 1, on front of left longitudinal member
q   Location
   672 Earth point 2, on front of left longitudinal member
q   Location
   673 Earth point 3, on front of left longitudinal member
q   Location
   652 Earth point, engine and gearbox earth
q   Location

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   638 Earth point on right A-pillar -arrow B-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   687 Earth point 1, on centre tunnel -arrow-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   75 Earth point, rear right pillar -arrow-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   667 Earth point, on rear left of roof -arrow C-
Tightening torque:
9 Nm
   690 Earth point, rear centre roof frame -arrow B-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   612 Earth point, in centre of rear lid -arrow-
Tightening torque:
2 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   57 Earth point, rear left pillar -arrow-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   639 Earth point, left A-pillar -arrow-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   12 Earth point, on left in engine compartment -arrow-
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   672 Earth point 2, on front of left longitudinal member -arrow A-
Tightening torque:
9 Nm
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   673 Earth point 3, on front of left longitudinal member -arrow-
Back to overview

   
SEAT LEON 2014 Earth points overview (3, 5-doors and ST vehicle) https://portal-diagnostov.com/license.html
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   652 Earth point, engine and gearbox earth -arrow-
Back to overview