Sym FIDDLE 125 Service Manual page 170

SYM
IGNITION SYSTEM
Ignition System Circuit
Pluser
green
CDI UNIT
Removal
Remove the right body cover, then the C.D.I.
unit can be removed from the frame.
Check
Disconnect the connector from the CDI unit.
Make the following inspection at each terminal of the harness side connector.
ITEM
Pulse Generator
Primary
Ignition
Coil
Secondary
green
green
Black/red
Blue/yellow
Black/red
Black/white
main switch
Measure at:
Blue/Yellow-green
Black/yellow-green
Green-high voltage cable -w/o cap
Green-high voltage cable - w/ cap
16. ELECTRICAL EQUIPMENT
black/yellow
C.D.I. unit
Ignition coil
Blue /yellow
Black/ yellow
Black/ white
spark plug
green
green
CDI UNIT
Standard (at 20C)
50 ~200Ω
0.21Ω±10%
3~5KΩ
7~12KΩ
16-11