Yamaha YZF-R1(B) 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-1014 Front speed sensor malfunc-tionRefer to “MAINTENANCE OFTHE FRONT SPEED SEN-SOR AND SENSORROTOR” on page 4-20 and“INSTALLING THE FRONTWHEEL (FRONT BRAKEDISCS)” on page 4-23.Replace the front speed sen-sor.Start the engine, and checkthe connection of the coupleris secure.Ride on the vehicle at a lowspeed (approx. 20–30 km/h).Then, check the fault codeindication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.5 ECU malfunction Replace the ECU.Fault code No. 70Symptom Engine has been left idling. (The ECU automatically stops theengine after 20 minutes if it is left idling.)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-dureEngine idling stopFault code No. 69Item Normal signals are not received from the front speed sensor.Fail-safe system Engine startup: PossibleRiding: PossibleDiagnostic code No. D:16Meter display Vehicle speed pulses: 0–999Checking methodMake sure that the indication value increases when the rotationspeed of the front wheel increases. This value is cumulative and isnot reset each time the wheel is prevented from rotating.Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure