Suzuki LT-Z90 Manual page 215

Step 2
1) Measure the battery voltage between input lead wires (O/W and B/W) at the CDI unit with the ignition
switch in the "ON" position.
Is the voltage OK?
YES Go to Step 3.
• Faulty ignition switch
NO • Faulty engine stop switch
• Broken wiring harness or poor connection of related circuit couplers
Step 3
1) Measure the ignition coil primary peak voltage. (
NOTE:
This inspection method is applicable only with the multi-circuit tester and the peak volt adaptor.
Is the peak voltage OK?
YES Go to Step 4.
NO Go to Step 5.
Step 4
1) Inspect the spark plug. (
Is the spark plug OK?
YES Go to Step 6.
NO Faulty spark plug.
Step 5
1) Inspect the parking brake switch. (
Is the parking brake switch OK?
YES Go to Step 6.
NO Faulty parking brake switch.
Step 6
1) Inspect the ignition coil. (
Is the ignition coil OK?
YES Go to Step 7.
• Poor connection of the ignition coil.
NO
• Faulty ignition coil.
Step 7
1) Measure the CKP sensor peak voltage and resistance. (
NOTE:
The CKP sensor peak voltage inspection is applicable only with the multi-circuit tester and peak volt adaptor.
Is the peak voltage and resistance OK?
• Faulty CDI unit.
YES • Poor connection of generator coupler.
• Open or short circuit in wire harness.
NO Faulty CKP sensor.
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6-23)
6-21)
6-20)
6-21)
ELECTRICAL SYSTEM 6-19