SEM ignition that fitted KTM400LC4 - 1996 to 2002
Flywheel and stator on right side of the bike.
Oscillogrammes.
| red | charging coil = 200Vac |
| green | pickup coil = +/-6Vac |
| black | frame ground |
| yellow | lighting coil |
| blue | lighting coil |
Click on wire to visualize the signal available on this wire, when the engine idles...
Pictures
Inside the stator
)
Stator.
Resistances map.
| OHMs | Red | green | black | yellow | blue |
| red | 1777 | 1754 | |||
| green | 1777 | 23 | |||
| black | 1754 | 23 | |||
| yellow | 0,2 | ||||
| blue | 0,2 |
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.
-
Pickup and Spark Signal at 1460RPM.
-
Pickup and Spark Signal at 2880RPM.
-
Pickup and Charge voltage at 1770RPM.
-
Pickup and Charge voltage at 2370RPM.
Notes.
LC4 kick start mit SEM zundspule
+ Pol - Pol Meßwert
Zündspule rot schwarz 47k
rot grün 47k
rot orange 0 Ohm
schwarz Zündkabel 2,0KOhm/+- 0,3k
Stator schwarz rot 1,7kOhm
schwarz grün 23Ohm +- 5 Ohm
rot grün 1,7kOhm
gelb/gelb blau 0,2Ohm
-------------------------------------------------
LC4 kick start mit SEM zundspule(ignition coil) until 1998
+ Pol - Pol Meßwert
Zündspule rot schwarz 47k
rot grün 47k
rot orange 0 Ohm
schwarz Zündkabel 2,0KOhm/+- 0,3k
Stator schwarz rot 1,7kOhm
schwarz grün 165Ohm +- 20 Ohm
grün rot 1,7kOhm
gelb gelb 1Ohm
------------------------------------------------------
LC4 electric start mit KOKUSAN
Impulsegeberspule rot grun 100ohm +-20%
stator schwarz/rot rot/weiss 12,7ohm +-20%
ladespule masse/gelb 0,65ohm +-20%
ladespule weiss/gelb 0,16ohm +-20%
------------------------------------------------------
LC4 kick start mit KOKUSAN super comper 1999-2003
Impulsegeberspule weiss grun 60 -120ohm
stator rot/schwarz-gelb 0,45 - 0,56ohm
stator schwarz/rot-rot/schwarz 0,45 - 0,56ohm
------------------------------------------------------
Zundspule(ignition coil) KOKUSAN
Primaire blau/weis - masse 0,45 - 0,56ohm
secondaire blau/weis - zundkabel 0,45 - 0,56ohm