Battery, Steering column electronics control unit, Fuse holder B
A
-
Battery
B
-
Starter
C
-
Alternator
J519
-
Onboard supply control unit
J527
-
Steering column electronics control unit
SA1
-
Fuse 1 in fuse holder A, on left in engine compartment (low box)
SB
-
Fuse holder B, on left in engine compartment (low box)
SB6
-
Fuse 6 on fuse holder B
T20d
-
20-pin connector
T40a
-
40-pin connector
T52c
-
52-pin connector
1
-
Earth strap, battery - body
43
-
Earth point, lower part of right A-pillar
332
-
Earth connection 4, in dash panel wiring harness
382
-
Earth connection 17, in main wiring harness
507
-
Threaded connection (30), on battery fuse holder
A2
-
Positive connection (15), in dash panel wiring harness
B111
-
Positive connection 1 (30a), in interior wiring harness
*
-
Only models with 90 A/ 110 A alternator
*2
-
Only models with 140A alternator
*3
-
Only models with no start/stop system
*4
-
Only models with start/stop system
León
Current Flow Diagram
No.
82 /
3
ws
=
white
sw
=
black
ro
=
red
rt
=
red
br
=
brown
gn
=
green
bl
=
blue
gr
=
grey
li
=
purple
vi
=
purple
ge
=
yellow
or
=
orange
rs
=
pink
Operating unit in steering wheel, Multifunction buttons on left in steering wheel, Horn plate, Steering column electronics control unit, Driver side airbag igniter
E221
-
Operating unit in steering wheel
E440
-
Multifunction buttons on left in steering wheel
F138
-
Airbag coil connector and return ring with slip ring
H
-
Horn plate
J234
-
Airbag control unit, behind console
J519
-
Onboard supply control unit
J527
-
Steering column electronics control unit
N95
-
Driver side airbag igniter
T4f
-
4-pin connector
T6s
-
6-pin connector
T12f
-
12-pin connector
T20d
-
20-pin connector
T100a
-
100-pin connector
*
-
Only left-hand drive models
León
Current Flow Diagram
No.
82 /
4
ws
=
white
sw
=
black
ro
=
red
rt
=
red
br
=
brown
gn
=
green
bl
=
blue
gr
=
grey
li
=
purple
vi
=
purple
ge
=
yellow
or
=
orange
rs
=
pink
Operating unit in steering wheel, Multifunction buttons on right in steering wheel
E221
-
Operating unit in steering wheel
E441
-
Multifunction buttons on right in steering wheel
J519
-
Onboard supply control unit
T8n
-
8-pin connector
T8p
-
8-pin connector
León
Current Flow Diagram
No.
82 /
5
ws
=
white
sw
=
black
ro
=
red
rt
=
red
br
=
brown
gn
=
green
bl
=
blue
gr
=
grey
li
=
purple
vi
=
purple
ge
=
yellow
or
=
orange
rs
=
pink
Multifunction buttons on right in steering wheel
E441
-
Multifunction buttons on right in steering wheel
J519
-
Onboard supply control unit
León
Current Flow Diagram
No.
82 /
6
ws
=
white
sw
=
black
ro
=
red
rt
=
red
br
=
brown
gn
=
green
bl
=
blue
gr
=
grey
li
=
purple
vi
=
purple
ge
=
yellow
or
=
orange
rs
=
pink
Control unit in dash panel insert, Data bus diagnostic interface, Dash panel insert
J285
-
Control unit in dash panel insert
J503
-
Control unit with display for radio and navigation
J519
-
Onboard supply control unit
J533
-
Data bus diagnostic interface, under steering wheel
K
-
Dash panel insert
R
-
Radio
R36
-
Telephone transmitter and receiver unit
T16c
-
16-pin connector
T20k
-
20-pin connector
T32b
-
32-pin connector
T52c
-
52-pin connector
T54a
-
54-pin connector
A178
-
Connection (infotainment CAN bus, high), in dash panel wiring harness
A179
-
Connection (infotainment CAN bus, low), in dash panel wiring harness
B383
-
Connection 1 (powertrain CAN bus, high), in main wiring harness
B390
-
Connection 1 (powertrain CAN bus, low), in main wiring harness
B397
-
Connection 1 (convenience CAN bus, high), in main wiring harness
B406
-
Connection 1 (convenience CAN bus, low), in main wiring harness