Troubleshooting - Yamaha RS90GTZ Service Manual

TROUBLESHOOTING

THE RADIATOR FAN MOTOR DOES NOT MOVE (RS90GTZ/RS90LTGTZ)
Check the main fuse, ignition fuse, and radiator
fan 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 NO CONTINUITY
Check the radiator fan motor.
OK FAULTY
Check the radiator fan motor relay.
OK FAULTY
Check the coolant temperature sensor.
Refer to "SIGNAL SYSTEM".
OK FAULTY
Check the cooling system wiring.
Refer to "CIRCUIT DIAGRAM".
OK FAULTY
Correct the connection and/or replace the ECU.
COOLING SYSTEM
Replace the main fuse, ignition fuse, and/or
radiator fan 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 radiator fan motor.
Replace the radiator fan motor relay.
Replace the coolant temperature sensor.
Properly connect or repair the cooling sys-
tem wiring.
8-66
ELEC