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SEM ignition that fitted KTM400LC4 - 1996 to 2002



Flywheel and stator on right side of the bike.



right side



Oscillogrammes.


red charging coil = 200Vac
green pickup coil = +/-6Vac
black frame ground
yellow lighting coil
blue lighting coil

Cliquer sur les fils
yellow= 12Vac12Vacgreen= pickupgreen= pickupred= charging coilred= charging coilred= charging coil

Click on wire to visualize the signal available on this wire, when the engine idles...

Pictures

Inside the stator

ZoomZoom

Thanks to Zoli Bihari

Stator.


Resistances map.


OHMs Red green black yellow blue
red 1777 1754    
green 1777 23    
black 1754 23    
yellow       0,2
blue       0,2

Until 1998 pickup coil (green - black) was 23ohm. After it's: 165ohm.


Ignition coil

It's not a simple coil!
There are some electronics inside...The "black box" is part of the coil

red charging coil = 200Vac
green pickup coil = +/-6Vac
black frame ground
orange handelbar kill switch



Schematic.



Orange "BLACK BOX" from a KTM 620LC4 - 1997



Synchronisation.



Notes.

LC4 kickstart Ignition coil with SEM before 1999
+ Pole - pole measurement
Coil red black 47k
red green 47k
red orange 0 Ohm
black ignition lead 2,0KOhm / + - 0.3K
Stator black red 1,7kOhm
black green 23Ohm + - 5 Ohm
red green 1,7kOhm
yellow / yellow blue 0,2Ohm
-------------------------------------------------
LC4 kickstart Ignition coil with SEM (ignition coil) after 1998
+ Pole - pole measurement
Coil red black 47k
red green 47k
red orange 0 Ohm
black ignition lead 2,0KOhm / + - 0.3K
Stator black red 1,7kOhm
black green 165Ohm + - 20 Ohm
green red 1,7kOhm
yellow yellow 1Ohm
--------------------------------------------------
LC4 electric start with KOKUSAN
Impulse transmitter coil red green 100ohm + -20%
Stator black / red red / white 12,7ohm + -20%
loading coil mass / yellow 0,65ohm + -20%
loading coil white / yellow 0,16ohm + -20%
--------------------------------------------------
LC4 kickstart with KOKUSAN super comper 1999-2003
Impulse transmitter coil white green 60 -120ohm
stator red / black-yellow 0.45 - 0,56ohm
Stator black / red and red / black 0.45 - 0,56ohm
--------------------------------------------------
Ignition coil KOKUSAN
Primary blue / white - mass 0,45 - 0,56ohm
secondary blue / white - zundkabel 0.45 - 0,56ohm
-------------------------------------------------