Suzuki RM250 Owner's Service Manual page 163

13-6 ELECTRICAL SYSTEM
Step 3
1) Inspect the spark plug. (2-6)
Is the spark plug OK?
YES • Poor connection of the spark plug
• Go to Step 4.
NO Faulty spark plug
Step 4
1) Measure the ignition coil resistanace. (13-8)
Is the ignition coil resistanace OK?
YES Go to Step 5.
NO Faulty ignition coil
Step 5
1) Measure the pick-up coil peak voltage. (13-7)
Is the peak voltage OK?
YES Go to Step 7.
NO Go to Step 6.
Step 6
1) Measure the pick-up coil resistance. (13-9)
Is the resistance OK?
YES Go to Step 7.
• Faulty pick-up coil
NO
• Metal particles or foreign material being stuck on the pick-up coil and rotor tip
Step 7
1) Measure the exciter coil and charge coil peak voltages. (13-7)
Are the peak voltages OK?
YES • Faulty CDI
• Faulty wire harness
• Faulty engine stop switch
NO Go to Step 8.
Step 8
1) Measure the exciter coil and charge coil resistance. (13-9)
Is the exciter coil and charge coil OK?
YES Faulty CDI
NO Faulty magneto