Yamaha YZF-R1(B) 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-663 Lean angle sensor malfunc-tionDiagnostic mode (Code No.08).Sensor inspection procedureRefer to “CHECKING THELEAN ANGLE SENSOR” onpage 8-138.In vertical position: 0.4–1.4 VWhen turned over:3.7–4.4 VIndication is incorrect. →Replace the lean angle sen-sor.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.4 ECU malfunction Replace the ECU.Fault code No. 33Symptom Ignition coil #1 primary lead malfunctionFail-safe actionEngine startup: Possible (depending on the number of failed cylin-ders)Riding: Possible (depending on the number of failed cylinders)Diagnostic monitor-ing code No. D:30Meter displayActuates the cylinder-#1 ignition coil five times at one-second inter-vals.Illuminates the engine trouble warning light.Checking method Check the spark five times.• Connect an ignition checker.Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 Connection of ignition coilcouplerCheck the connection of thecoupler is secure.Remove the coupler, andcheck each pin (for bending,wear, or locking).Poor connection → Connectit securely or replace the wireharness.Start and idle the engine forapproximately 5 seconds.Then, check the fault codeindication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.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-dure