Honda CB HORNET 160R 2015 Shop Manual page 290

IGNITION SYSTEM
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)
No spark at spark plug
Unusual condition
Low peak voltage
No peak voltage
Ignition coil
primary voltage
Peak voltage is normal.
but no spark jumps at the plug.
Low peak voltage
Ignition pulse
generator
No peak voltage
16-2
Probable cause (check in numerical order)
The multimeter impedance is too low; below 10 MΩ/DCV.
1.
2. Cranking speed is too slow.
3. The sampling time of the tester and measured pulse were not
synchronized. (System is normal if measured voltage is over the standard
voltage at least once.)
4. Poorly connected connectors or an open circuit in the ignition system.
5. Faulty ignition coil.
6. Faulty capacitive discharge ignition (CDI) (in case when No.1-5 are
normal).
1. Incorrect peak voltage adapter connections.
2. Battery is undercharged.
3. Faulty ignition switch.
4. Loose or poorly connected CDI connectors.
5. Open circuit or poor connection in the Red/Black wire of the CDI.
6. Open circuit or poor connection in the green wire of the CDI.
7. Faulty peak voltage adapter.
8. Faulty ignition pulse generator. (Measure the peak voltage.)
9. Faulty CDI (in case when above No.1 – 8 are normal).
1. Faulty spark plug or leaking ignition coil but no spark jumps at the plug
secondary current.
2. Faulty ignition coil.
The multimeter impedance is too low; generator below 10 MΩ/DCV.
1.
2. Cranking speed is too slow.
3. The sampling time of the tester and measured pulse were not
synchronized. (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 – 3 are
normal).
1. Faulty peak voltage adapter.
2. Faulty ignition pulse generator.