Honda CRF450R 2012 Service Manual

IGNITION SYSTEM
TROUBLESHOOTING
• Inspect the following before diagnosing the system.
- Faulty spark plug
- Loose spark plug cap or spark plug wire connection
- Water got into the spark plug cap (affecting the ignition coil secondary voltage)
• If there is no spark at cylinder, temporarily exchange the ignition coil with a known good one and perform the spark
test.
If there is spark, the origina l ignition coil is faulty.
No spark at plug
, "
primary
voltage
generator
18-4
6.
7.
i (measure the resistance ).
;gn;t;o, coil the resistance).
norma l i voltage
with reverse connection).
2. Short ci r cuit in engine stop button wire.
3. Faulty engine stop bunon.
4. Loose or poorly connected leM connectors.
5. An open circuit or loose ignition coil wire.
6. Faulty exciter coil (measure the resistance).
7. Faulty ignition pulse generator (measure the peak volt-
DCV.
2. Cranking speed is too low.
- Kickstarter is weak
- Battery
is undercharged
cu r-
3. The sampling timing of the tester and measured pulse
were not synchronized (System is normal
if measured
vodtage;i,s
over the standard at least once).
•
•

Honda CRF450R 2012 Specifications

General

Brand	Honda
Model	CRF450R 2012
Category	Motorcycle
Language	English