Ignition System; Troubleshooting - Suzuki GW250 Service Manual

IGNITION SYSTEM

CKP
sensor

TROUBLESHOOTING

No spark or poor spark
NOTE:
* Check that the transmission is in neutral and the 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.
Step 1
1) Check the ignition system couplers for poor connections.
Is there connection in the ignition system couplers?
YES Go to Step 2.
NO Poor connection of couplers.
Step 2
1) Measure the battery voltage between input lead wires at the ECM with the ignition switch in ON
position. (O/R and B/W)
Is the voltage OK?
YES Go to Step 3.
• Faulty ignition switch.
• Side-stand relay.
NO
• Faulty engine stop switch.
• Broken wire harness or poor connection of related circuit couplers.
ECM
TP ECT GP
sensor sensor switch
ELECTRICAL SYSTEM 9-21
Engine stop switch
Side-stand
relay
#1
Fuse
Ignition switch
#2
Fuse
Battery