Yamaha FZ1-N Service Manual

Contents

ELECTRICAL COMPONENTS8-108b. Set the main switch to “ON”.c. Elevate the rear wheel and slowly rotate it.d. Measure the voltage (DC 5 V) of White/Yel-low and Blue. With each full rotation of therear wheel, the voltage reading shouldcycle from 0.6 V to 4.8 V to 0.6 V to 4.8 V.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28250CHECKING THE RADIATOR FAN MOTOR1. Check:• Radiator fan motorFaulty/rough movement → Replace.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Disconnect the radiator fan motor couplerfrom the wire harness.b. Connect the battery (DC 12 V) as shown.c. Measure the radiator fan motor movement.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28260CHECKING THE COOLANT TEMPERATURESENSOR1. Remove:• Coolant temperature sensorWARNINGEWA14130• Handle the coolant temperature sensorwith special care.• Never subject the coolant temperaturesensor to strong shocks. If the coolanttemperature sensor is dropped, replace it.2. Check:• Coolant temperature sensor resistanceOut of specification → Replace.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Connect the pocket tester (Ω × 1k) to thecoolant temperature sensor “1” as shown.b. Immerse the coolant temperature sensor ina container filled with coolant “2”.NOTE:Make sure the coolant temperature sensor ter-minals do not get wet.c. Place a thermometer “3” in the coolant.• Positive tester probeWhite/Yellow “1”• Negative tester probeBlack/Blue “2”• Positive tester probeBlue “1”• Negative tester probeBlack “2”Coolant temperature sensorresistance0°C (32°F) : 5.21–6.37 kΩ80°C (176°F) : 0.29–0.35 kΩPocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probeCoolant temperature sensor terminal• Negative tester probeCoolant temperature sensor terminal