Electrical Circuit; Troubleshooting (No Spark Or Poor Spark) - Suzuki RM250 Owner's Service Manual

ELECTRICAL CIRCUIT

B/W B/W
Magneto
COLOR CODE
B: Black
G: Green
R: Red
Y: Yellow
B/Bl: Black with Blue tracer
B/Br: Black with Brown tracer
B/G: Black with Green tracer

TROUBLESHOOTING (No spark or poor spark)

Step 1
1) Check the ignition system couplers for poor connections.
Is there connection in the ignition system couplers?
YES Go to Step 2.
NO Poor connection of couplers
Step 2
1) Measure the peak voltage of ignition coil. (13-7)
Is the peak voltage OK?
YES Go to Step 3.
NO Go to Step 4.
Engine stop switch
B/Y B/Y
B/R B/R
R R
G G
R/W B/W
Y Y Y Y
B/W B/W
B B
Carburetor
solenoid
Bl/B Bl/B
B/R: Black with Red tracer
B/W: Black with White tracer
B/Y: Black with Yellow tracer
Bl/B: Blue with Black tracer
R/W: Red with White tracer
W/Bl: White with Blue tracer
Throttle position sensor
B/Br B/Br
B/G B/G
B/Bl B/Bl
W/Bl
W/Bl W/Bl
CDI unit
B/W
B/W
ELECTRICAL SYSTEM 13-5
Ignition coil
Spark plug