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ELEC
EAS00736
TROUBLESHOOTING
The ignition system fails to operate (no
spark or intermittent spark).
Check:
1. main and ignition fuses
2. battery
3. spark plug
4. ignition spark gap
5. spark plug cap resistance
6. ignition coil resistance
7. crankshaft position sensor resistance
8. main switch
9. engine stop switch
10. sidestand switch
11. lean angle cut-off switch
12. wiring connections
(of the entire ignition system)
TIP
8 Before troubleshooting, remove the follow-
ing part(s):
1. battery box cover
2. front cover
3. leg shield 1
4. footrest board
8 Troubleshoot with the following special
tool(s).
Ignition checker
90890-06754 (YM-34487)
Pocket tester
90890-03112(YU-03112-C)
EAS00738
1.Main and ignition fuses
8 Check the main and ignition fuses for conti-
nuity.
Refer to “CHECKING THE FUSES” in chap-
ter 3.
8 Are the main and ignition fuses OK?
YES NO
EAS00739
2. Battery
8 Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20°C (68°F)
8 Is the battery OK?
YES NO
8 Clean the battery
terminals.
8 Recharge or re-
place the battery.
EAS00740
3. Spark plug
8 Check the condition of the spark plug.
8 Check the spark plug type.
8 Measure the spark plug gap.
Refer to “CHECKING THE SPARK PLUG”
in chapter 3.
Standard spark plug
U22ESR-N (DENSO)
Spark plug gap
0.7 ~ 0.8 mm (0.028 ~ 0.031in)
8 Is the spark plug in good condition, is it of
the correct type, and is its gap within speci-
fication?
YES NO
Re-gap or replace the
spark plug.
IGNITION SYSTEM
Replace the fuse(s)
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