Yamaha YZF-R1B 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

ELECTRICAL COMPONENTS8-146c. Turn the main switch to “ON”.d. Rotate the crankshaft.e. Measure the voltage. With each full rotationof the crankshaft, the voltage readingshould cycle from 0.8 V to 4.8 V to 0.8 V to4.8 V.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28410CHECKING THE INTAKE AIR PRESSURESENSOR1. Check:• Intake air pressure sensor output voltageOut of specification → Replace.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Connect the test harness S-pressure sen-sor (3P) “1” to the intake air pressure sen-sor and wire harness as shown.ECA14B1035Pay attention to the installing direction ofthe test harness S-pressure sensor (3P)coupler “a”.b. Connect the digital circuit tester (DCV) tothe test harness S-pressure sensor (3P).c. Turn the main switch to “ON”.d. Measure the intake air pressure sensoroutput voltage.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28420CHECKING THE INTAKE AIR TEMPERA-TURE SENSOR1. Remove:• Intake air temperature sensor(from the headlight assembly.)WARNINGEWA14110• Handle the intake air temperature sensorwith special care.• Never subject the intake air temperaturesensor to strong shocks. If the intake airtemperature sensor is dropped, replace it.2. Check:• Intake air temperature sensor resistanceOut of specification → Replace.Pocket tester90890-03112Analog pocket testerYU-03112-CTest harness-speed sensor (3P)90890-03208YU-03208• Positive tester probeWhite/Black (wire harness color)• Negative tester probeBlack/Blue (wire harness color)Intake air pressure sensor out-put voltage3.57–3.71 V at 101.32 kPaDigital circuit tester90890-03174Model 88 Multimeter withtachometerYU-A1927Test harness S-pressure sensor(3P)90890-03207YU-03207• Positive tester probePink/White (wire harness color)• Negative tester probeBlack/Blue (wire harness color)Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk