Yamaha YZF-R1 2007 Service Manual

ELECTRICAL COMPONENTS8-103b. Set the main switch to “ON”.c. Rotate the crankshaft.d. Measure the voltage (DC 20 V) of White/Black and Black/Blue. With each full rota-tion of 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 pocket tester (DC 20 V) to theintake air pressure sensor coupler (wireharness side) as shown.b. Set the main switch to “ON”.c. Measure the intake air pressure sensoroutput voltage.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28420CHECKING THE INTAKE AIR TEMPERA-TURE SENSOR1. Remove:• Intake air temperature sensor(from the air filter case.)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.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Connect the pocket tester (Ω × 100) to theintake air temperature sensor terminal asshown.Pocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probeWhite/Black “1”• Negative tester probeBlack/Blue “2”Intake air pressure sensor out-put voltage3.15–4.15 VPocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probePink/White “1”• Negative tester probeBlack/Blue “2”Intake air pressure sensorresistance2.21–2.69 kΩ at 20°C (68°F)Pocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probeBrown/White “1”• Negative tester probeBlack/Blue “2”Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk