SEAT LEON 2013 – Seat heating . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2013 - Front left seat temperature sender - Onboard supply control unit - Fuse holder A - Fuse holder C - Heated seat cushion for driver seat - Heated backrest for driver seat

A	Battery
G344	Front left seat temperature sender
J519	Onboard supply control unit
SA	Fuse holder A
SA4	Fuse 4 in fuse holder A
SC	Fuse holder C
SC26	Fuse 26 on fuse holder C
T2s	2-pin connector
T4u	4-pin connector
T10n	10-pin connector, under driver seat
T73a	73-pin connector
T73c	73-pin connector
Z6	Heated seat cushion for driver seat
Z7	Heated backrest for driver seat
96	Earth connection 1, in seat heating wiring harness
B431	Connection (seat heating), in main wiring harness
O12	Connection 1, in seat heating wiring harness

Wiring Diagram SEAT LEON 2013 - Front right seat temperature sender - Onboard supply control unit - Heated seat cushion for front passenger seat - Heated backrest for front passenger seat

G345	Front right seat temperature sender
J519	Onboard supply control unit
T2t	2-pin connector
T4v	4-pin connector
T10p	10-pin connector, under front passenger seat
T73a	73-pin connector
T73c	73-pin connector
Z8	Heated seat cushion for front passenger seat
Z9	Heated backrest for front passenger seat
136	Earth connection 2, in seat heating wiring harness
B431	Connection (seat heating), in main wiring harness
O13	Connection 2, in seat heating wiring harness

Wiring Diagram SEAT LEON 2013 - Button for left seat heating - Button for right seat heating - Onboard supply control unit - Data bus diagnostic interface - Heated driver seat warning lamp - Heated front passenger seat warning lamp

E653	Button for left seat heating
E654	Button for right seat heating
J65	Heater control unit
J255	Climatronic control unit
J301	Air conditioning system control unit
J519	Onboard supply control unit
J533	Data bus diagnostic interface
K59	Heated driver seat warning lamp
K68	Heated front passenger seat warning lamp
T20a	20-pin connector
T20b	20-pin connector
T73a	73-pin connector
B397	Connection 1 (convenience CAN bus, high), in main wiring harness
B406	Connection 1 (convenience CAN bus, low), in main wiring harness
*	According to equipment

SEAT LEON 2013

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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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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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 ,

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SEAT LEON 2013

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 2013 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

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SEAT LEON 2013

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 2013

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 2013 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 2013 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

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SEAT LEON 2013

Fuses on fuse holder C -SC- , from September 2012

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

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SEAT LEON 2013

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 2013

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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 Coupling station in rear bumper Coupling station in rear bumper Location: in bumper.

1 -	6-pin connector -T6l-

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SEAT LEON 2013 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 2013 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 2013 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 2013 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 2013 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 2013 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 2013 Coupling station in front bumper Coupling station in front bumper Location: in bumper.

1 -	8-pin connector -T8a-

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SEAT LEON 2013 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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