Troubleshooting - Yamaha RS90GTZ Service Manual

TROUBLESHOOTING

HEADLIGHT AND/OR HIGH BEAM INDICATOR LIGHT DO NOT COME ON.
Check the headlight bulb(s).
OK NO CONTINUITY
Check the main fuse, ignition fuse, and headlight
fuse.
Refer to "FUSE INSPECTION" in CHAPTER 2.
OK FAULTY
Check the battery.
Refer to "BATTERY INSPECTION" in CHAPTER 2.
OK OUT OF SPECIFICATION
Check the engine stop switch and main switch.
Refer to "IGNITION SYSTEM".
OK FAULTY
Check the headlight beam switch.
OK FAULTY
Check the headlight relay.
OK FAULTY
Check the load control relay.
OK FAULTY
Check the lighting system wiring.
Refer to "CIRCUIT DIAGRAM".
OK FAULTY
Correct the connection and/or replace the
speedometer unit, and/or ECU.
LIGHTING SYSTEM
Replace the bulb(s).
Replace the main fuse, ignition fuse, and/or
headlight fuse.
Replace or charge the battery.
Refer to "BATTERY INSPECTION" in CHAP-
TER 2.
Replace the right handlebar switch and/or
main switch.
Replace the left handlebar switch.
Replace the headlight relay.
Replace the load control relay.
Properly connect or repair the lighting sys-
tem wiring.
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