Yamaha YZF-R1B 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-59Fault code No. 21Symptom Open or short circuit of coolant temperature sensor leadFail-safe action Engine startup: PossibleRiding: PossibleDiagnostic monitor-ing code No. D:06Meter display When engine is cold: Displays temperature closer to air temperatureWhen engine is hot: Displays current coolant temperatureChecking method Compare the actually measured coolant temperature with the meterdisplay value.Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 Connection of coolant tem-perature sensor 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.Place the main switch to theON position, and check thefault code indication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.2 Connection of main harnessECU 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.Place the main switch to theON position, and check thefault code indication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.3 Connection of primary injec-tor sub-wire harness 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.Place the main switch to theON position, and check thefault code indication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.4 Continuity of wire harness Open or short circuit →Replace the wire harnessBlack/Blue–Black/BlueGreen/White–Green/WhitePlace the main switch to theON position, and check thefault code indication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.5 Installation status of coolanttemperature sensorCheck the mounting sectionfor a loose or pinched mount-ing.Make sure that the mountingposition is correct.Place the main switch to theON position, and check thefault code indication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk