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Wayne S.
Wayne S., Motorcycle Mechanic
Category: Motorcycle
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1986 Yamaha atv yfm 225 moto4 No start condition--- have replaced

Customer Question

1986 Yamaha atv yfm 225 moto4 No start condition--- have replaced cdi module and ign. coil no change Question I donot have battery voltage on orange wire at coil-- when should I have voltage at the coil? any suggestions???
Submitted: 2 years ago.
Category: Motorcycle
Expert:  Wayne S. replied 2 years ago.

the orange wire will only have voltage when the CDI
module is triggered by the pickup or pulse coil to send the juice.

The pickup coil (white/red) is 196 ohms, the source or charge coil is 381 ohms. (black/red)
The source coil charges the CDI module and then the pickup coil
triggers the CDI to spark ignition coil on the orange wire.
The CDI module black/white is just a stop or kill engine wire.
Check all coils and connections.
Let me know what you find.

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