Ignition System; Troubleshooting - Suzuki GSX1400 Service Manual

7-18 ELECTRICAL SYSTEM

IGNITION SYSTEM

ECM
CKP
sensor
Wave form
arrangement
circuit
Wave form
arrangement
circuit
Cam position
sensor
NOTE:
The ignition cut-off circuit is incorporated in this ECM to prevent over-running of engine. If engine rpm reaches
9 200 r/min., this circuit cuts off the ignition primary current for all spark plugs.
Under no load, the engine can run over 9 200 r/min, even if the ignition cut-off circuit is effective,
and it may cause engine damage. Do not run the engine without load over 9 200 r/min at anytime.

TROUBLESHOOTING

No spark or poor spark
Check the ignition system couplers for
poor connections.
Correct
Continued on next page
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Power source
circuit
CPU
Throttle Gear
Engine
position position
oil temp.
sensor switch
sensor
* Check that the transmission is in neutral and the
Looseness
Engine stop switch
Ignition
coil
engine stop switch is in the "RUN" position. Grasp
the clutch lever. Check that the fuse is not blown
and the battery is fully-charged before diagnosing.
• Poor connection of couplers
Side-
stand
relay
Spark plug
Fuse
1.4
Ignition
switch
2.3
Fuse
Battery