SEAT LEON 2014 – Body electrical, 4-door vehicle . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2014 - Heated rear window relay - Fuse holder A - Fuse holder C

A	Battery
J9	Heated rear window relay
SA	Fuse holder A
SA1	Fuse 1 in fuse holder A
SC	Fuse holder C
SC5	Fuse 5 on fuse holder C
SC7	Fuse 7 on fuse holder C
SC8	Fuse 8 on fuse holder C
SC31	Fuse 31 on fuse holder C
SC41	Fuse 41 on fuse holder C
SC42	Fuse 42 on fuse holder C
SC53	Fuse 53 on fuse holder C
B315	Positive connection 1 (30a) in main wiring harness
B316	Positive connection 2 (30a) in main wiring harness

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

J329	Terminal 15 voltage supply relay
SC	Fuse holder C
SC34	Fuse 34 on fuse holder C
SC35	Fuse 35 on fuse holder C
SC47	Fuse 47 on fuse holder C
SC49	Fuse 49 on fuse holder C
T17d	17-pin connector, blue, on left A-pillar
B278	Positive connection 2 (15a) in main wiring harness
B279	Positive connection 3 (15a) in main wiring harness

Wiring Diagram SEAT LEON 2014 - Relay for power sockets - Fuse holder A - Fuse holder C

J807	Relay for power sockets
SA	Fuse holder A
SA4	Fuse 4 in fuse holder A
SC	Fuse holder C
SC17	Fuse 17 on fuse holder C
SC23	Fuse 23 on fuse holder C
SC40	Fuse 40 on fuse holder C
SC43	Fuse 43 on fuse holder C

Wiring Diagram SEAT LEON 2014 - Intermittent wiper switch - Cruise control system switch - Multifunction display call-up button - Cruise control system (CCS) SET button - Steering column electronics control unit

E22	Intermittent wiper switch
E45	Cruise control system switch
E86	Multifunction display call-up button
E227	Cruise control system (CCS) SET button
J527	Steering column electronics control unit
T6s	6-pin connector
T6t	6-pin connector
T9a	9-pin connector
T9b	9-pin connector
*	Only models with cruise control system (CCS)

Wiring Diagram SEAT LEON 2014 - Turn signal switch - Horn plate - Steering column electronics control unit - Driver side airbag igniter

E2	Turn signal switch
F350	Coil connector
H	Horn plate
J234	Airbag control unit
J527	Steering column electronics control unit
N95	Driver side airbag igniter
T4c	4-pin connector
T8e	8-pin connector
T8f	8-pin connector
T12a	12-pin connector
T90a	90-pin connector

Wiring Diagram SEAT LEON 2014 - Ignition/starter switch - Steering column electronics control unit

D	Ignition/starter switch
J527	Steering column electronics control unit
N376	Ignition key withdrawal lock solenoid
T2h	2-pin connector
T6r	6-pin connector
T8d	8-pin connector
T16e	16-pin connector
T17b	17-pin connector, white, on left A-pillar
184	Earth connection (headlight range control), in engine compartment wiring harness
366	Earth connection 1, in main wiring harness
369	Earth connection 4, in main wiring harness

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Steering column electronics control unit

E313	Selector lever
J519	Onboard supply control unit
J527	Steering column electronics control unit
J587	Selector lever sensors control unit
J623	Engine control unit
T10g	10-pin connector
T16a	16-pin connector
T16e	16-pin connector
T17d	17-pin connector, blue, on left A-pillar
T73a	73-pin connector
T73c	73-pin connector
369	Earth connection 4, in main wiring harness
370	Earth connection 5, in main wiring harness
B454	Connection (shift lock), in main wiring harness
B699	Connection 4 (LIN bus) in main wiring harness
*	see applicable current flow diagram for gearbox
*2	see applicable current flow diagram for engine
*3	According to equipment

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Bulb for left daytime running light and side light - Front left headlight - Front left turn signal bulb - Left headlight dipped beam bulb - Left headlight main beam bulb - Left headlight range control motor

J519	Onboard supply control unit
L186	Bulb for left daytime running light and side light
MX1	Front left headlight
M5	Front left turn signal bulb
M29	Left headlight dipped beam bulb
M30	Left headlight main beam bulb
T10b	10-pin connector
T17b	17-pin connector, white, on left A-pillar
T17d	17-pin connector, blue, on left A-pillar
T46b	46-pin connector
T73c	73-pin connector
V48	Left headlight range control motor
201	Earth connection 5, in engine compartment wiring harness
D200	Positive connection 3 (15a), in engine compartment wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2014 - Bonnet contact switch - Onboard supply control unit - Left fog light bulb - Left cornering light bulb - Headlight washer system pump

F266	Bonnet contact switch
J519	Onboard supply control unit
L22	Left fog light bulb
L148	Left cornering light bulb
T46b	46-pin connector
V11	Headlight washer system pump
85	Earth connection 1, in engine compartment wiring harness
201	Earth connection 5, in engine compartment wiring harness
417	Earth connection 9, in engine compartment wiring harness
D112	Connection 10 in engine compartment wiring harness

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Fuse holder B - Windscreen and rear window washer pump - Left washer jet heater element - Right washer jet heater element

J400	Wiper motor control unit
J519	Onboard supply control unit
SB	Fuse holder B
SB19	Fuse 19 on fuse holder B
T46b	46-pin connector
V	Windscreen wiper motor
V59	Windscreen and rear window washer pump
Z20	Left washer jet heater element
Z21	Right washer jet heater element
131	Earth connection 2, in engine compartment wiring harness
201	Earth connection 5, in engine compartment wiring harness
C72	Positive connection in heated washer jet wiring harness
*	Only models with heater elements for washer jets
*2	Only left-hand drive models
*3	Only right-hand drive models

Wiring Diagram SEAT LEON 2014 - Brake pedal position sender - Clutch position sender - Onboard supply control unit - Fuse holder B

G100	Brake pedal position sender
G476	Clutch position sender
J271	Main relay
J317	Terminal 30 voltage supply relay
J519	Onboard supply control unit
J623	Engine control unit
SB	Fuse holder B
SB6	Fuse 6 on fuse holder B
T4f	4-pin connector
T5i	5-pin connector
T17d	17-pin connector, blue, on left A-pillar
T73c	73-pin connector
131	Earth connection 2, in engine compartment wiring harness
B335	Connection 1 (54), in main wiring harness
D52	Positive connection (15a), in engine compartment wiring harness
D73	Positive connection (54), in engine compartment wiring harness
*	According to equipment
*2	Only models with manual gearbox
*3	see applicable current flow diagram for engine

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Bulb for right daytime running light and side light - Front right headlight - Front right turn signal bulb - Right headlight dipped beam bulb - Right headlight main beam bulb - Right headlight range control motor

J519	Onboard supply control unit
L188	Bulb for right daytime running light and side light
MX2	Front right headlight
M7	Front right turn signal bulb
M31	Right headlight dipped beam bulb
M32	Right headlight main beam bulb
T10c	10-pin connector
T46b	46-pin connector
V49	Right headlight range control motor

Wiring Diagram SEAT LEON 2014 - Front right brake pad wear sender - Treble horn - Bass horn - Onboard supply control unit - Right fog light bulb - Right cornering light bulb - Fuse holder B - Tank filler flap locking motor

G35	Front right brake pad wear sender
H2	Treble horn
H7	Bass horn
J413	Horn relay
J519	Onboard supply control unit
L23	Right fog light bulb
L149	Right cornering light bulb
SB	Fuse holder B
SB15	Fuse 15 on fuse holder B
T46b	46-pin connector
T73a	73-pin connector
V155	Tank filler flap locking motor
132	Earth connection 3, in engine compartment wiring harness
167	Earth connection 4, in engine compartment wiring harness
C13	Positive connection in dual tone horn wiring harness
D53	Connection (right brake wear indicator), in engine compartment wiring harness
D54	Connection (right brake wear indicator), in engine compartment wiring harness
D113	Connection 11 in engine compartment wiring harness
*	Only models with warning function for brake pad wear
*2	Only models with dual tone horn
*3	According to equipment

Wiring Diagram SEAT LEON 2014 - Light switch - Onboard supply control unit

E1	Light switch
E7	Fog light switch
E18	Rear fog light switch
E102	Headlight range control regulator
J519	Onboard supply control unit
L9	Light switch illumination bulb
T7a	7-pin connector
T10d	10-pin connector
T17b	17-pin connector, white, on left A-pillar
T73a	73-pin connector
T73c	73-pin connector
375	Earth connection 10, in main wiring harness
B340	Connection 1 (58d), in main wiring harness
D106	Connection 4 in engine compartment wiring harness
*	Only models with headlight range control
*2	Only models with fog lights
*3	Only models with rear fog light

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

J519	Onboard supply control unit
T3g	3-pin connector
T6u	6-pin connector
T73c	73-pin connector
W1	Front interior light
WX3	Front roof module
W11	Rear left reading light
W12	Rear right reading light
W13	Front passenger reading light
W15	Interior light with switch-off delay
W19	Driver side reading light
W43	Rear interior light
372	Earth connection 7, in main wiring harness
375	Earth connection 10, 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
*	According to equipment

Wiring Diagram SEAT LEON 2014 - Hazard warning light switch - Glove compartment light switch - Onboard supply control unit - 12 V socket - Glove compartment light

E3	Hazard warning light switch
E26	Glove compartment light switch
J519	Onboard supply control unit
K6	Indicator lamp for hazard warning light
T3d	3-pin connector
T6p	6-pin connector
T52c	52-pin connector
T73c	73-pin connector
U5	12 V socket, in rear centre console
W6	Glove compartment light
368	Earth connection 3, in main wiring harness
371	Earth connection 6, in main wiring harness
B559	Positive connection 1 (30g) in main wiring harness

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Rear left turn signal bulb - Rear right turn signal bulb - Left brake and tail light bulb - Right brake and tail light bulb

J519	Onboard supply control unit
MX3	Left tail light
MX4	Right tail light
M6	Rear left turn signal bulb
M8	Rear right turn signal bulb
M21	Left brake and tail light bulb
M22	Right brake and tail light bulb
T4i	4-pin connector
T4j	4-pin connector
T73a	73-pin connector
T73c	73-pin connector
X4	Left number plate light
X5	Right number plate light
374	Earth connection 9, in main wiring harness
W2	Positive connection (58), in interior light wiring harness

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Right tail light bulb - Left tail light bulb - Left reversing light bulb - Right reversing light bulb - Additional brake light bulb

J519	Onboard supply control unit
L46	Rear left fog light bulb
L47	Rear right fog light bulb
M2	Right tail light bulb
M4	Left tail light bulb
MX5	Left tail light 2
MX6	Right tail light 2
M16	Left reversing light bulb
M17	Right reversing light bulb
M25	Additional brake light bulb
T4m	4-pin connector
T4n	4-pin connector
T10h	10-pin connector, black, on left C-pillar
T73a	73-pin connector
T73c	73-pin connector
98	Earth connection, in rear lid wiring harness
B520	Connection (RL), in main wiring harness
*	Only models with no rear fog light
*2	Only models with rear fog light
*3	Only right-hand drive models
*4	Only left-hand drive models

Wiring Diagram SEAT LEON 2014 - Onboard supply control unit - Heated rear window

C18	Window aerial suppression filter
C24	Suppression filter
J519	Onboard supply control unit
T1a	Single connector
T1b	Single connector
T2g	2-pin connector
T10h	10-pin connector, black, on left C-pillar
T10j	10-pin connector, brown, on left C-pillar
Z1	Heated rear window
98	Earth connection, in rear lid wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2014 - Rear lid handle release button - Reversing light switch - Onboard supply control unit - Rear window wiper motor

E234	Rear lid handle release button
F4	Reversing light switch
J519	Onboard supply control unit
T10h	10-pin connector, black, on left C-pillar
T10j	10-pin connector, brown, on left C-pillar
T17a	17-pin connector, brown, on left A-pillar
T46b	46-pin connector
T73a	73-pin connector
V12	Rear window wiper motor
98	Earth connection, in rear lid wiring harness
D136	Positive connection 2 (15a), in engine compartment wiring harness
*	Only models with manual gearbox

Wiring Diagram SEAT LEON 2014 - Rear lid contact switch for anti-theft alarm - Onboard supply control unit - Rear lid central locking motor

F123	Rear lid contact switch for anti-theft alarm
J519	Onboard supply control unit
T10j	10-pin connector, brown, on left C-pillar
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
*2	For models with anti-theft alarm system

Wiring Diagram SEAT LEON 2014 - Brake fluid level warning contact - Coolant shortage indicator switch - Ambient temperature sensor - Windscreen washer fluid level sender - Onboard supply control unit

F34	Brake fluid level warning contact
F66	Coolant shortage indicator switch
G17	Ambient temperature sensor
G33	Windscreen washer fluid level sender
J519	Onboard supply control unit
T46b	46-pin connector
327	Earth connection (sender earth), in engine compartment wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2014 - Driver door contact switch - Driver door control unit - Onboard supply control unit - Driver side turn signal repeater bulb

F2	Driver door contact switch
J386	Driver door control unit
J519	Onboard supply control unit
L131	Driver side turn signal repeater bulb
T2k	2-pin connector
T8k	8-pin connector
T8m	8-pin connector
T16g	16-pin connector
T20c	20-pin connector
T27a	27-pin connector, on left A-pillar
VX4	Driver side exterior mirror
VX21	Driver door lock unit
107	Earth connection, in external mirror wiring harness
303	Earth connection 3, in drive side door wiring harness
B397	Connection 1 (convenience CAN bus, high), in main wiring harness
B406	Connection 1 (convenience CAN bus, low), in main wiring harness
*	Only left-hand drive models
*2	Only right-hand drive models

Wiring Diagram SEAT LEON 2014 - Front passenger door control unit - Onboard supply control unit - Data bus diagnostic interface - Front passenger side turn signal repeater bulb - Fuse holder B - Front passenger door lock unit

F3	Front passenger door contact switch
J367	Battery monitor control unit
J387	Front passenger door control unit
J519	Onboard supply control unit
J533	Data bus diagnostic interface
L132	Front passenger side turn signal repeater bulb
SB	Fuse holder B
SB18	Fuse 18 on fuse holder B
T2l	2-pin connector
T2u	2-pin connector
T8l	8-pin connector
T8n	8-pin connector
T16h	16-pin connector
T17d	17-pin connector, blue, on left A-pillar
T20a	20-pin connector
T20d	20-pin connector
T27b	27-pin connector, on right A-pillar
T73a	73-pin connector
T73c	73-pin connector
VX5	Front passenger side exterior mirror
VX22	Front passenger door lock unit
304	Earth connection 3, in front passenger side door wiring harness
801	Earth connection 2, in external mirror wiring harness
B273	Positive connection (15), in main wiring harness
B397	Connection 1 (convenience CAN bus, high), in main wiring harness
B406	Connection 1 (convenience CAN bus, low), in main wiring harness
*	Only left-hand drive models
*2	Only right-hand drive models
*3	Only models with no start/stop system
*4	Only models with stop/start system

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

J119	Multifunction indicator
J234	Airbag control unit
J285	Control unit in dash panel insert
J533	Data bus diagnostic interface
KX2	Dash panel insert
T16a	16-pin connector
T20a	20-pin connector
T90a	90-pin connector
U31	Diagnostic connection
B108	Connection 1 (CAN bus extended high), in main wiring harness
B109	Connection 1 (CAN bus extended low), in main wiring harness
B383	Connection 1 (powertrain CAN bus, high), in main wiring harness
B390	Connection 1 (powertrain CAN bus, low), in main wiring harness
B415	Connection 1 (infotainment CAN bus, high), in main wiring harness
B421	Connection 1 (infotainment CAN bus, low), in main wiring harness
B672	Connection 1 (running gear/dash panel insert CAN bus, high), in main wiring harness
B676	Connection 1 (running gear/dash panel insert CAN bus, low), in main wiring harness
B698	Connection 3 (LIN bus) in main wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2014 - Handbrake warning switch - Control unit in dash panel insert - Dash panel insert

D2	Immobiliser reader coil
F9	Handbrake warning switch
J285	Control unit in dash panel insert
J362	Immobiliser control unit
K1	Main beam warning lamp
KX2	Dash panel insert
K13	Rear fog light warning lamp
K14	Handbrake warning lamp
K19	Seat belt warning system warning lamp
K32	Brake pad warning lamp
K65	Left turn signal warning lamp
K94	Right turn signal warning lamp
K118	Brake system warning lamp
T18a	18-pin connector
367	Earth connection 2, in main wiring harness

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

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

The fittings locations are identical on LHD and RHD models.

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

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

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

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

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

The fittings locations are identical on LHD and RHD models.

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

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

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	-	-		-

Back to overview

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	-	-		-

Back to overview SEAT LEON 2014 Fuse holder C SC Fuse holder C -SC- Location, only left-hand drive models: on left under dash panel

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

Back to overview

SEAT LEON 2014 Fuse holder C SC Fuse holder C -SC- Location, only right-hand drive models: on left under dash panel

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

Back to overview

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

Back to overview

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

Back to overview

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 coupling stations (3, 5-doors and ST vehicle)

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

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.

1 -	10-pin connector -T10q-

q	Only models with diesel engine

2 -	14-pin connector -T14a-

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SEAT LEON 2014 Coupling station on front passenger door Coupling station on front passenger door Location: on front passenger side A-pillar.

A -	27-pin connector -T27b-

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SEAT LEON 2014 Coupling station on front passenger seat Coupling station on front passenger seat Location: under front passenger seat.

1 -	10-pin connector -T10p-

2 -	3-pin connector -T3b-

3 -	4-pin connector -T4a-

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SEAT LEON 2014 Coupling station on roof wiring Coupling station on roof wiring Location: Near the front roof module.

1 -	6-pin connector -T6q-

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SEAT LEON 2014 Coupling station on rear passenger door Coupling station on rear passenger door Location: on front passenger side B-pillar.

A -	27-pin connector -T27d-

Only models with 5-doors

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SEAT LEON 2014 Coupling station on rear lid, centre Coupling station on rear lid, centre Location: on the rear lid, centre.

1 -	10-pin connector -T10h- black

2 -	10-pin connector -T10j- brown

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SEAT LEON 2014 Coupling station in rear bumper Coupling station in rear bumper Location: in bumper.

1 -	6-pin connector -T6l-

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SEAT LEON 2014 Coupling station on rear driver door Coupling station on rear driver door Location: on driver side B-pillar.

1 -	27-pin connector -T27c-

Only models with 5-doors

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SEAT LEON 2014 Coupling station on driver seat Coupling station on driver seat Location: under driver seat.

1 -	10-pin connector -T10n-

2 -	3-pin connector -T3a-

3 -	2-pin connector -T2a-

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SEAT LEON 2014 Coupling station on driver door Coupling station on driver door Location: on driver side A-pillar.

A -	27-pin connector -T27a-

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SEAT LEON 2014 Coupling station on left A-pillar Coupling station on left A-pillar Location: on left A-pillar.

1 -	17-pin connector -T17a- brown

2 -	17-pin connector -T17b- white

3 -	17-pin connector -T17c- red

4 -	17-pin connector -T17d- blue

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SEAT LEON 2014 Coupling station on alternator Coupling station on alternator Location: front left in engine compartment.

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

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SEAT LEON 2014 Coupling station for radiator fan Coupling station for radiator fan Location: on left in engine compartment.

1 -	4-pin connector -T4g-

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SEAT LEON 2014 Coupling station in front bumper Coupling station in front bumper Location: in bumper.

1 -	8-pin connector -T8a-

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SEAT LEON 2014

Control units overview (3, 5-doors and ST vehicle)

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

A -	Headlight range control unit -J431-

A1 -	26-pin connector -T26a-

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SEAT LEON 2014 Data bus diagnostic interface -J533- Location: under the dash panel.

A -	Data bus diagnostic interface -J533-

A1 -	20-pin connector -T20a-

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SEAT LEON 2014 Front passenger door control unit -J387- Location: on the front passenger door.

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-

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SEAT LEON 2014 Air conditioning system control unit​ -J301- Location: on the dash panel - centre

A -	Air conditioning system control unit​ -J301-

A1 -	16-pin connector -T16b-

A2 -	20-pin connector -T20b-

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SEAT LEON 2014 Climatronic control unit -J255- Location: on the dash panel - centre

A -	Climatronic control unit -J255-

A1 -	16-pin connector -T16c-

A2 -	16-pin connector -T16d-

A3 -	20-pin connector -T20b-

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SEAT LEON 2014 Front camera for driver assist systems -R242- Location: near interior mirror

A -	Front camera for driver assist systems -R242-

A1 -	12-pin connector -T12i-

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SEAT LEON 2014 Sliding sunroof adjustment control unit -J245- (only 3 and 5-doors vehicle) Location: on rear sunroof motor

A -	Sliding sunroof adjustment control unit -J245-

A1 -	10-pin connector -T10i-

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SEAT LEON 2014 Sliding sunroof adjustment control unit -J245- (only ST vehicle) Location: on front sunroof motor

A -	Sliding sunroof adjustment control unit -J245-

A1 -	16-pin connector -T16j-

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SEAT LEON 2014 Electronically controlled damping control unit -J250- Location: behind left side trim in luggage compartment

A -	Electronically controlled damping control unit -J250-

A1 -	47-pin connector -T47a-

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SEAT LEON 2014 Trailer detector control unit -J345- Location: behind left side trim in luggage compartment

A -	Trailer detector control unit -J345-

A1 -	16-pin connector -T16i-

A2 -	12-pin connector -T12j-

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SEAT LEON 2014 All-wheel drive control unit -J492- Location: on differential

A -	All-wheel drive control unit -J492-

A1 -	2-pin connector -T2ad-

A2 -	8-pin connector -T8w-

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SEAT LEON 2014 Fuel pump control unit -J538- (petrol engines) Location: under the back seat.

A -	Fuel pump control unit -J538-

A1 -	5-pin connector -T5j-

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SEAT LEON 2014 Fuel pump control unit -J538- (diesel engines) Location: under the back seat.

A -	Fuel pump control unit -J538-

A1 -	6-pin connector -T6ab-

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SEAT LEON 2014 Driver door control unit -J386- Location: on the driver door.

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-

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SEAT LEON 2014 Steering column electronics control unit -J527- Location: on the steering column electronics.

A -	Steering column electronics control unit -J527-

A1 -	4-pin connector -T4c-

A2 -	16-pin connector -T16e-

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SEAT LEON 2014 Control unit in dash panel insert -J285- Location: on the dash panel.

A -	Control unit in dash panel insert -J285-

A1 -	18-pin connector -T18a-

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SEAT LEON 2014 Onboard supply control unit -J519- Location: behind dash panel, left

A -	Onboard supply control unit -J519-

A1 -	73-pin connector -T73a-

A2 -	46-pin connector -T46b-

A3 -	73-pin connector -T73c-

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SEAT LEON 2014 Park assist steering control unit -J446- Location: behind dash panel, left

A -	Park assist steering control unit -J446-

A1 -	26-pin connector -T26b-

A2 -	18-pin connector -T18b-

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SEAT LEON 2014 Airbag control unit J234 Airbag control unit -J234- Location: under centre console.

A -	Airbag control unit -J234-

A1 -	90-pin connector -T90a-

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

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

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

638	Earth point on right A-pillar -arrow B-

Tightening torque:

9 Nm

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687	Earth point 1, on centre tunnel -arrow-

Tightening torque:

9 Nm

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75	Earth point, rear right pillar -arrow-

Tightening torque:

9 Nm

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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

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612	Earth point, in centre of rear lid -arrow-

Tightening torque:

2 Nm

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57	Earth point, rear left pillar -arrow-

Tightening torque:

9 Nm

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639	Earth point, left A-pillar -arrow-

Tightening torque:

9 Nm

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12	Earth point, on left in engine compartment -arrow-

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672	Earth point 2, on front of left longitudinal member -arrow A-

Tightening torque:

9 Nm

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673	Earth point 3, on front of left longitudinal member -arrow-

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652	Earth point, engine and gearbox earth -arrow-

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SEAT LEON 2014 Control units overview (3, 5-doors and ST vehicle)

Control units overview (3, 5-doors and ST vehicle)

2 -	Mechatronic unit for dual clutch gearbox -J743-

q	Location: on gearbox

q	Fitting location and pin connectors:

q	Fitting location and pin connectors for engine codes CJSA and CJXA (196-pin)

8 -	Radiator fan control unit -J293-

q	Location: on the cooler

SEAT LEON 2014 Battery monitor control unit​ J367 Battery monitor control unit​ -J367- Location: on the battery.

A -	2-pin connector -T2u-

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SEAT LEON 2014 ABS control unit J104 ABS control unit -J104- Location: in engine compartment.

A -	ABS control unit -J104-

A1 -	38-pin connector -T38a-

According to equipment

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SEAT LEON 2014 ABS control unit J104 ABS control unit -J104- Location: in engine compartment.

A -	ABS control unit -J104-

A1 -	46-pin connector -T46a-

According to equipment

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SEAT LEON 2014 Engine control unit -J623- CHPA, CJZA, CJZB, CKFB, CKFC, CLHA, CLHB, CMBA, CRBC, CRKB, CRLB, CRMB, CRVA, CRVC, CUNA, CUPA and CXSA (154-pin) Location: in engine compartment, between battery and electronics box

A -	Engine control unit -J623-

A1 -	94-pin connector -T94a-

A2 -	60-pin connector -T60a-

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SEAT LEON 2014 Engine control unit -J623- CJSA and CJXA (196-pin) Location: in engine compartment, between battery and electronics box

A -	Engine control unit -J623-

A1 -	91-pin connector -T91a-

A2 -	105-pin connector -T105a-

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SEAT LEON 2014 Power steering control unit J500 Power steering control unit -J500- Location: near the steering box.

A -	Power steering control unit -J500-

A1 -	3-pin connector -T3c-

A2 -	2-pin connector -T2b-

A3 -	5-pin connector -T5a-

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SEAT LEON 2014 Adaptive cruise control unit J428 Adaptive cruise control unit -J428- Location: near front bumper.

A -	Adaptive cruise control unit -J428-

A1 -	8-pin connector -T8r-

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