Yamaha RX10H Service Manual page 272

ENGINE OIL INDICATOR LIGHT AND/OR WARNING LIGHT DO NOT COME ON.
Check the warning light bulb.
Refer to "LIGHTING SYSTEM".
NO CONTINUITY
OK
Check the main fuse, ignition 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".
FAULTY
OK
Check the oil level switch.
FAULTY
OK
Check the main relay.
Refer to "IGNITION SYSTEM".
FAULTY
OK
Correct the connection and/or
replace the meter assembly
and/or the rectifier/regulator
and/or the CDI unit.
SIGNAL SYSTEM
Replace the bulb.
Replace the main fuse, ignition fuse and/or
signal 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 oil level switch.
Replace the main relay.
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