Troubleshooting - Yamaha XVS6501997 Service Manual

EB802010

TROUBLESHOOTING

IF THE IGNITION SYSTEM FAILS TO OPERATE (NO SPARK OR INTERMITTENT SPARK):
Procedure
Check:
1. Fuses (main and ignition)
2. Battery
3. Spark plugs
4. Ignition spark gap
5. Spark plug cap resistance
6. Ignition coil resistance
7. Pickup coil resistance
NOTE:
D Remove the following part(s) before trouble-
shooting:
1) Battery cover
2) Rider's seat
3) Fuel tank
4) Steering head side covers
D Use the following special tool(s) for trouble-
shooting.
EB802011
1. Fuses (main and ignition)
Refer to "SWITCH INSPECTION".
EB802012
2. Battery
S Check the battery condition.
Refer to "BATTERY INSPECTION" in
CHAPTER3.
Open-circuit voltage:
12.8 V or more at 20_C
CONTINUITY
CORRECT
:
IGNITION SYSTEM
8. Main switch
9. Engine stop switch
10. Neutral switch
11. Sidestand switch
12. Relay unit (diode)
13. Wiring connection (the entire ignition
system)
Ignition checker:
90890-06754
Pocket tester:
90890-03112
NO CONTINUITY
Replace the fuses.
INCORRECT
S Clean the battery terminals.
S Recharge or replace the battery.
7-6
ELEC