Yamaha YZF-R1B 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-92Fault code No. 46Symptom Incorrect voltage is supplied to the ECU.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-dure1 Connection of ECU couplerCheck the connection of thecoupler is secure.Remove the coupler, andcheck each pin (for bending,wear, or locking).Poor connection → Connectit securely, or repair/replacethe wire harness.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.2 Continuity of wire harness Open or short circuit →Replace the wire harness.Between the battery andmain switchRed–RedBetween the main switch andignition fuseBrown/Blue–Brown/BlueBetween the ignition fuse andECURed/White–Red/WhiteStart and idle the engine forapproximately 5 seconds.Then, check the fault codeindication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.3 Battery malfunction Check the battery voltage.Refer to “CHECKING ANDCHARGING THE BATTERY”on page 8-129.Battery malfunction →Recharge or replace the bat-tery.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.4 Stator coil malfunction Check the stator coil output.Refer to “CHECKING THESTATOR COIL” on page 8-139.Stator coil malfunction →Replace the stator coil.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.5 ECU malfunction Replace the ECU.Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk