Ignition System; Troubleshooting - Suzuki RM-z450 Owner's Service Manual

15-11 ELECTRICAL SYSTEM

IGNITION SYSTEM

Condenser
Magneto
NOTE:
The fuel cut-off circuit is incorporated in this ECM in order to prevent over-running of engine.

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 ignition coil primary peak voltage. (!15-13)
Is the peak voltage OK?
YES Go to Step 3.
NO Go to Step 4.
Step 3
1) Inspect the spark plug. (!2-7)
Is the spark plug OK?
• Poor connection of the spark plug
YES
• Go to Step 4.
NO Faulty spark plug
Regulator
/rectifier
CKP sensor
Crankshaft rotation
signal sensor
ECM
TP ECT GP
sensor sensor switch
Ignition coil
Engine
stop
switch