Yamaha YZF-R1B 2012 Service Manual

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Contents

ELECTRICAL COMPONENTS8-142c. Turn the main switch to “ON”.d. Elevate the rear wheel and slowly rotate it.e. Measure the voltage. With each full rotationof the rear wheel, the voltage readingshould cycle from 0.6 V to 4.8 V to 0.6 V to4.8 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 sensorRefer to “CYLINDER HEAD” on page 5-24.WARNINGEWA14130• 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.• Positive tester probeBlue or Green “1”• Negative tester probeBlack “2”A. Right sideB. Left sideCoolant temperature sensorresistance5.21–6.37 kΩ at 0 °C (32 ° F)2.45 kΩ at 20 °C (68 °F)290–354 Ω at 80 °C (176 °F)Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk