SEAT LEON 2016 – 2.0l diesel engine, CRBC . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2016 - Battery - Starter - Alternator - Fuse holder A - Fuse holder B

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
SA	Fuse holder A
SA2	Fuse 2 in fuse holder A
SB	Fuse holder B
SB18	Fuse 18 on fuse holder B
SB23	Fuse 23 on fuse holder B
T2v	2-pin connector
T8s	8-pin connector
T17a	17-pin connector, brown, in left A-pillar
B698	Connection 3 (LIN bus) in main wiring harness
D218	Connection 1 (LIN bus) in engine compartment wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2016 - Terminal 15 voltage supply relay - Fuse holder A - Fuse holder C

J329	Terminal 15 voltage supply relay
SA	Fuse holder A
SA1	Fuse 1 in fuse holder A
SC	Fuse holder C
SC41	Fuse 41 on fuse holder C
SC49	Fuse 49 on fuse holder C
T17d	17-pin connector, blue, in left A-pillar

Wiring Diagram SEAT LEON 2016 - Ignition/starter switch - Cruise control system switch - Cruise control system (CCS) SET button - Steering column electronics control unit - Starter relay 1 - Starter relay 2 - Fuse holder B

D	Ignition/starter switch
E45	Cruise control system switch
E227	Cruise control system (CCS) SET button
J527	Steering column electronics control unit
J906	Starter relay 1
J907	Starter relay 2
SB	Fuse holder B
SB22	Fuse 22 on fuse holder B
T6r	6-pin connector
T8d	8-pin connector
T9a	9-pin connector
T9b	9-pin connector
T16e	16-pin connector
366	Earth connection 1, in main wiring harness
369	Earth connection 4, in main wiring harness
D52	Positive connection (15a), in engine compartment wiring harness
*	Only models with cruise control system (CCS)

Wiring Diagram SEAT LEON 2016 - Onboard supply control unit - Steering column electronics control unit

J519	Onboard supply control unit
J527	Steering column electronics control unit
T16e	16-pin connector
T17d	17-pin connector, blue, in left A-pillar
T73a	73-pin connector
T73c	73-pin connector

Wiring Diagram SEAT LEON 2016 - Driving mode selection button - Onboard supply control unit - Driving mode selection warning lamp

E735	Driving mode selection button
J519	Onboard supply control unit
K280	Driving mode selection warning lamp
L76	Button illumination bulb
T6b	6-pin connector
T10e	10-pin connector
T73c	73-pin connector
367	Earth connection 2, in main wiring harness
368	Earth connection 3, in main wiring harness
B340	Connection 1 (58d), in main wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2016 - Oil level and oil temperature sender - Engine control unit

G266	Oil level and oil temperature sender
J623	Engine control unit
T10f	10-pin connector
T17d	17-pin connector, blue, in left A-pillar
T94a	94-pin connector
131	Earth connection 2, in engine compartment wiring harness
201	Earth connection 5, in engine compartment wiring harness
B273	Positive connection (15), in main wiring harness
D17	Positive connection 1 (15), in engine harness
*	Cross section depends on equipment

Wiring Diagram SEAT LEON 2016 - Brake pedal position sender - Clutch position sender - Engine control unit - Fuse holder B

G100	Brake pedal position sender
G476	Clutch position sender
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, in left A-pillar
T94a	94-pin connector
131	Earth connection 2, in engine compartment wiring harness
D73	Positive connection (54), in engine compartment wiring harness

Wiring Diagram SEAT LEON 2016 - Fuel gauge sender - Fuel system pressurisation pump - Fuel pump control unit - Engine control unit - Fuse holder B

G	Fuel gauge sender
G6	Fuel system pressurisation pump
J538	Fuel pump control unit
J623	Engine control unit
SB	Fuse holder B
SB10	Fuse 10 on fuse holder B
T3n	3-pin connector
T4z	4-pin connector
T6ab	6-pin connector
T17d	17-pin connector, blue, in left A-pillar
T94a	94-pin connector
374	Earth connection 9, in main wiring harness
*	Only left-hand drive models
*2	Only right-hand drive models

Wiring Diagram SEAT LEON 2016 - Vacuum sender - Terminal 30 voltage supply relay - Engine control unit - Fuse holder B

G608	Vacuum sender
J104	ABS control unit
J317	Terminal 30 voltage supply relay
J623	Engine control unit
SB	Fuse holder B
SB3	Fuse 3 on fuse holder B
SB17	Fuse 17 on fuse holder B
T38a	38-pin connector
T46a	46-pin connector
T94a	94-pin connector
209	Earth connection 6, in engine compartment wiring harness
D78	Positive connection 1 (30a), in engine compartment wiring harness
D180	Connection (87a), in engine compartment wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2016 - Automatic glow period control unit - Engine control unit - Glow plug 1 - Glow plug 2 - Glow plug 3 - Glow plug 4 - Fuse holder B

J179	Automatic glow period control unit
J623	Engine control unit
Q10	Glow plug 1
Q11	Glow plug 2
Q12	Glow plug 3
Q13	Glow plug 4
SB	Fuse holder B
SB9	Fuse 9 on fuse holder B
T14a	14-pin connector, near front left longitudinal member
T94a	94-pin connector
D183	Connection 4 (87a) in engine compartment wiring harness

Wiring Diagram SEAT LEON 2016 - Engine control unit - Intake manifold preheating heater element - Charge pressure control solenoid valve - Fuel pressure regulating valve - Fuel metering valve - Fuse holder B

J293	Radiator fan control unit
J623	Engine control unit
N51	Intake manifold preheating heater element
N75	Charge pressure control solenoid valve
N276	Fuel pressure regulating valve
N290	Fuel metering valve
SB	Fuse holder B
SB4	Fuse 4 on fuse holder B
SB5	Fuse 5 on fuse holder B
T4g	4-pin connector
T14a	14-pin connector, near front left longitudinal member
T60a	60-pin connector
T94a	94-pin connector
D182	Connection 3 (87a) in engine compartment wiring harness
D183	Connection 4 (87a) in engine compartment wiring harness
D206	Connection 4 (87a) in engine prewiring harness
*	see applicable current flow diagram for radiator fan
*2	Only for countries with cold climate

Wiring Diagram SEAT LEON 2016 - Engine control unit - Valve for oil pressure control - Coolant valve for cylinder head - Fuse holder B - Charge air cooling pump - Auxiliary pump for heating

J623	Engine control unit
N428	Valve for oil pressure control
N489	Coolant valve for cylinder head
SB	Fuse holder B
SB7	Fuse 7 on fuse holder B
T2x	2-pin connector
T8s	8-pin connector
T10f	10-pin connector
T10q	10-pin connector, near front left longitudinal member
T14a	14-pin connector, near front left longitudinal member
T60a	60-pin connector
T94a	94-pin connector
V188	Charge air cooling pump
V488	Auxiliary pump for heating
417	Earth connection 9, in engine compartment wiring harness
D197	Connection 5 (87a) in engine compartment wiring harness
D205	Connection 3 (87a) in engine prewiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2016 - Oil pressure switch - Oil pressure switch for reduced oil pressure - Exhaust gas temperature sender 3 - Exhaust gas temperature sender 4 - Low heat output relay - High heat output relay - Engine control unit

F22	Oil pressure switch
F378	Oil pressure switch for reduced oil pressure
G495	Exhaust gas temperature sender 3
G648	Exhaust gas temperature sender 4
J359	Low heat output relay
J360	High heat output relay
J623	Engine control unit
T14a	14-pin connector, near front left longitudinal member
T60a	60-pin connector
T94a	94-pin connector
220	Earth connection (sender earth), in engine wiring harness
417	Earth connection 9, in engine compartment wiring harness
458	Earth point 3, engine prewiring harness
D102	Connection 2 in engine compartment wiring harness
*	Only models with auxiliary air heater
*2	see applicable current flow diagram

Wiring Diagram SEAT LEON 2016 - Coolant temperature sender - Fuel temperature sender - Exhaust gas temperature sender 1 - Charge air temperature sender before charge air cooler - Engine control unit

G62	Coolant temperature sender
G81	Fuel temperature sender
G235	Exhaust gas temperature sender 1
G810	Charge air temperature sender before charge air cooler
J623	Engine control unit
T2w	2-pin connector
T60a	60-pin connector
486	Earth point 4, engine prewiring harness

Wiring Diagram SEAT LEON 2016 - Engine control unit - Injector - cylinder 1 - Injector - cylinder 2 - Injector - cylinder 3 - Injector - cylinder 4

J623	Engine control unit
N30	Injector, cylinder 1
N31	Injector, cylinder 2
N32	Injector, cylinder 3
N33	Injector, cylinder 4
T60a	60-pin connector

Wiring Diagram SEAT LEON 2016 - Pressure differential sender - Engine control unit - Exhaust flap control unit

G505	Pressure differential sender
J623	Engine control unit
J883	Exhaust flap control unit
T5l	5-pin connector
T10q	10-pin connector, near front left longitudinal member
T94a	94-pin connector
327	Earth connection (sender earth), in engine compartment wiring harness
E46	Positive connection 1 (5 Volt) in injection system wiring harness

Wiring Diagram SEAT LEON 2016 - Air mass meter - Engine control unit

G70	Air mass meter
J623	Engine control unit
T94a	94-pin connector

Wiring Diagram SEAT LEON 2016 - Hall sender - Position sender for charge pressure positioner - Engine control unit

G40	Hall sender
G581	Position sender for charge pressure positioner
J623	Engine control unit
T60a	60-pin connector
281	Earth point 1, engine prewiring harness
D174	Connection 2 (5V) in engine prewiring harness

Wiring Diagram SEAT LEON 2016 - Throttle valve module - Fuel pressure sender - Engine control unit

GX3	Throttle valve module
G69	Throttle valve potentiometer
G247	Fuel pressure sender
J338	Throttle valve module
J623	Engine control unit
T60a	60-pin connector
283	Earth point 2, engine prewiring harness
D141	Connection (5V) in engine prewiring harness

Wiring Diagram SEAT LEON 2016 - Exhaust gas recirculation valve 2 - Engine speed sender - Engine control unit

GX6	Exhaust gas recirculation valve 2
G28	Engine speed sender
G466	Exhaust gas recirculation potentiometer 2
J623	Engine control unit
T60a	60-pin connector
V339	Exhaust gas recirculation control motor 2
283	Earth point 2, engine prewiring harness
D141	Connection (5V) in engine prewiring harness

Wiring Diagram SEAT LEON 2016 - Accelerator pedal module - Lambda probe 1 before catalytic converter - Engine control unit - Fuse holder B

GX2	Accelerator pedal module
GX10	Lambda probe 1 before catalytic converter
G39	Lambda probe
G79	Accelerator position sender
G185	Accelerator position sender 2
J623	Engine control unit
SB	Fuse holder B
SB8	Fuse 8 on fuse holder B
T6aa	6-pin connector
T6y	6-pin connector
T94a	94-pin connector
Z19	Lambda probe heater
D181	Connection 2 (87a) in engine compartment wiring harness

Wiring Diagram SEAT LEON 2016 - Charge pressure sender - Water separator sender - Charge air temperature sender after charge air cooler - Engine control unit

G31	Charge pressure sender
G63	Water separator sender
G811	Charge air temperature sender after charge air cooler
J623	Engine control unit
T10q	10-pin connector, near front left longitudinal member
T14a	14-pin connector, near front left longitudinal member
T94a	94-pin connector
316	Earth connection (sender earth 2) in engine wiring harness
D103	Connection 3 in engine compartment wiring harness
E47	Positive connection 2 (5 Volt) in injection system wiring harness
*	According to equipment

Wiring Diagram SEAT LEON 2016 - Data bus diagnostic interface - Engine control unit - Dash panel insert

H3	Buzzer and gong
J119	Multifunction indicator
J285	Control unit in dash panel insert
J533	Data bus diagnostic interface
J623	Engine control unit
KX2	Dash panel insert
K31	Cruise control system warning lamp
K132	Electronic power control fault lamp
T17a	17-pin connector, brown, in left A-pillar
T17d	17-pin connector, blue, in left A-pillar
T20a	20-pin connector
T94a	94-pin connector
B383	Connection 1 (powertrain CAN bus, high), in main wiring harness
B390	Connection 1 (powertrain CAN bus, low), in main wiring harness
E123	Connection 1 (powertrain CAN bus, high), in engine wiring harness
E124	Connection 1 (powertrain CAN bus, low), in engine wiring harness

Wiring Diagram SEAT LEON 2016 - Data bus diagnostic interface - Dash panel insert

G1	Fuel gauge
G3	Coolant temperature gauge
G5	Rev. counter
G21	Speedometer
J285	Control unit in dash panel insert
J533	Data bus diagnostic interface
KX2	Dash panel insert
K16	Reserve fuel warning lamp
K29	Glow period warning lamp
K83	Exhaust emissions warning lamp
K149	Engine electronics warning lamp
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 2016 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 2016

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 2016 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 2016

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 2016

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 2016 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

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SEAT LEON 2016 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 2016

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 2016

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 2016

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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 Coupling station in rear bumper Coupling station in rear bumper Location: in bumper.

1 -	6-pin connector -T6l-

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SEAT LEON 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 Coupling station in front bumper Coupling station in front bumper Location: in bumper.

1 -	8-pin connector -T8a-

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SEAT LEON 2016 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

Back to overview

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 2016 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

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SEAT LEON 2016 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

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SEAT LEON 2016

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

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SEAT LEON 2016

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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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

Back to overview

SEAT LEON 2016 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 2016 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 2016 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 2016 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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