Troubleshooting - Yamaha PZ50W Service Manual

COOLING SYSTEM (PZ50M/PZ50VT/PZ50MP)

TROUBLESHOOTING

Check the main fuse, ignition fuse, and radiator fan
motor 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.
Refer to "CHARGING SYSTEM".
OUT OF SPECIFICATION
OK
Check the main switch.
Refer to "IGNITION SYSTEM".
NO CONTINUITY
OK
Check the radiator fan motor.
FAULTY
OK
Check the radiator fan motor relay.
FAULTY
OK
Check the coolant temperature sensor.
Refer to "SIGNAL SYSTEM".
FAULTY
OK
Check the load control relay.
Refer to "LIGHTING SYSTEM".
FAULTY
OK
Correct the connection and/or replace the rectifier/
regulator and/or the ECU.
THE RADIATOR FAN MOTOR DOES NOT MOVE
8-52
Replace the main fuse, ignition fuse, and/or radia-
tor fan motor fuse.
Replace and/or charge the battery.
Refer to "BATTERY INSPECTION" in CHAPTER
2.
Replace the stator coil assembly.
Replace the main switch.
Replace the radiator fan motor.
Replace the radiator fan motor relay.
Replace the coolant temperature sensor.
Replace the load control relay.
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