Yamaha YZF-R1(B) 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-656 O 2 sensor malfunction Check the O 2 sensor for anabnormality.Refer to “ENGINEREMOVAL” on page 5-3.O2 sensor malfunction →Replace the O2 sensorEither start and warm up theengine, and then racing it, orreset it with diagnostic code63.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.7 ECU malfunction Replace the ECU.Fault code No. 30Symptom Turnover of vehicleFail-safe action Engine startup: ImpossibleRiding: ImpossibleDiagnostic monitor-ing code No. D:08Meter displayLean angle sensor• 0.4–1.4 (upright)• 3.7–4.4 (overturned)Checking method Remove the lean angle sensor and incline it more than 45 degrees.Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 Turnover of vehicle Raise the vehicle to theupright positionPlace the main switch to theON position.(however, the engine cannotbe restarted unless the mainswitch is first turned OFF)No fault code indicated. →Recovered.Fault code indicated. →Check the next step.2 Sensor installation status Check for a loose mounting,pinched mounting, or sensormounting direction (up ordown).Make sure that the mountingposition is correct.Place the main switch to theON position.(however, the engine cannotbe restarted unless the mainswitch is first turned OFF)No fault code indicated. →Recovered.Fault code indicated. →Check the next step.Fault code No. 24Symptom The O 2 sensor does not operate.Fail-safe action Engine startup: PossibleRiding: PossibleDiagnostic monitor-ing code No. —Meter display —Checking method —Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure