Yamaha RX10LTGTYL Service Manual page 1557

TROUBLESHOOTING
GRIP WARMER AND THUMB WARMER DO NOT OPERATE.
Check the main fuse and signal fuse.
Refer to "FUSE INSPECTION" in CHAPTER 2.
FAULTY
OK
Check the battery.
Refer to "BATTERY INSPECTION" in CHAPTER 2.
OUT OF SPECIFICATION
OK
Check the stator coil and pickup coil.
OUT OF SPECIFICATION
OK
Check the main switch.
Refer to "IGNITION SYSTEM".
NO CONTINUITY
OK
Check the grip and thumb warmer.
NO CONTINUITY
OK
Check the grip warmer switch and
thumb warmer switch
INCORRECT
CORRECT
Check the main relay.
Refer to "IGNITION SYSTEM".
FAULTY
OK
Correct the connection and/or
replace the rectifier/regulator
and/or the CDI unit.
GRIP WARMER SYSTEM
Replace the main fuse and/or
ignition fuse.
Replace and/or charge the battery.
Refer to "BATTERY INSPECTION" in
CHAPTER 2.
Replace the stator coil and pickup
coil assembly.
Replace the main switch.
Replace the grip and/or thumb warmer.
Replace the left handlebar switch and/or
right handlebar switch.
Replace the main switch.
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