Honda Activa SCV110, Справочник по обслуживанию

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16-2
IGNITION SYSTEM
UNUSUAL CONDITION PROBABLE CAUSE (Check in numerical order)
Low peak voltage Ignition coil
primary voltage
No peak voltage
Peak voltage is normal, but no
spark jumps at plug
1. Incorrect peak voltage adaptor connections. (System is normal if measured
voltage is over the specifications with reverse connections.)
2. The multimeter impedance is too low; below 10 M
Ω
/DCV.
3. Cranking speed is too low.
4. The sampling timing of the tester and measured pulse were not synchro-
nized. (System is normal if measured voltage is over the standard voltage
at least once.)
5. Poorly connected connectors or an open circuit in ignition system.
6. Faulty exciter coil (Measure the peak voltage).
7. Faulty ignition control module (ICM) (in case when above No. 1 thru. 6 are
normal.)
1. Incorrect peak voltage adaptor connections.
2. Faulty ignition switch or engine stop switch.
3. Loose or poorly connected ICM connectors.
4. Open circuit or poor connection in ground wire of the ICM.
5. Faulty peak voltage adaptor.
6. Faulty exciter coil (Measure the peak voltage).
7. Faulty ignition pulse generator (Measure the peak voltage).
8. Faulty ICM (in cases when above No. 1 – 7 are normal).
1. Faulty spark plug or leaking ignition coil secondary current ampere.
2. Faulty ignition coil.
1. Multimeter impedance is too low; below 10 M
Ω
/DCV.
2. Cranking speed is too low.
• Operating force of the kickstarter is weak.
3. The sampling timing of the tester and measured pulse were not
synchronized (System is normal if measured voltage is over the
specifications at least once).
4. Faulty exciter coil (in cases when above No. 1 – 3 are normal).
1. Faulty peak voltage adaptor
2. Faulty exciter coil
1. The multimeter impedance is too low; below 10 M
Ω
/DCV.
2. Cranking speed is too slow.
• Operating force of the kickstarter is weak.
3. The sampling timing of the tester and measured pulse were not synchro-
nized (System is normal if measured voltage is over the standard voltage
at least once.)
4. Faulty ignition pulse generator (in case when above No. 1 thru. 3 are
normal.)
1. Faulty peak voltage adaptor.
2. Faulty ignition pulse generator.
No peak voltage
Low peak voltage Ignition pulse
generator
Low peak voltage Exciter coil
No peak voltage
TROUBLESHOOTING
• Inspect the following before diagnosing the system.
— Faulty spark plug
— Loose spark plug cap or spark plug wire connections
— Water got into the spark plug cap (Leaking the ignition coil secondary voltage)
• If there is no spark at cylinder, temporarily exchange the ignition coil with the other good one and perform the spark test. If there is
spark, the exchanged ignition coil is faulty.
No spark at spark plug