Yamaha YZF-R1B 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-884 Continuity of wire harness Open short circuit → Replacethe wire harness.Black/Yellow–Black/YellowBlue/Yellow–Blue/YellowStart the engine, and checkthe secure connection of thecoupler.Ride 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 Clutch switch malfunction Check the clutch switch.Refer to “CHECKING THESWITCHES” on page 8-125.Start the engine, and checkthe secure connection of thecoupler.Ride 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.6 Malfunction of the ECU orspeedometer.Replacement of the ECU orspeedometer.Fault code No. 43Symptom Incorrect voltage supplied to the fuel injector and fuel pumpFail-safe action Engine startup: PossibleRiding: PossibleDiagnostic monitor-ing code No. D:50Meter display Approximately 12.0Checking methodSet the engine stop switch to “ ”, and then compare with the actu-ally measured battery voltage. (If the battery voltage is lower, per-form recharging.)Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 Connection of relay unit cou-plerCheck 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 30 seconds.Then, check the fault codeindication.No fault indicated. → Recov-ered.Fault code indicated. →Check the next step.Item/components andprobable cause Check or maintenance job Sensor inspection proce-dureManuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk