Yamaha YZF-R1B 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-55Fault code No. 19Symptom Open or short circuit of ECU input line (Blue/Yellow lead)Fail-safe action Engine startup: ImpossibleRiding: ImpossibleDiagnostic monitor-ing code No. D:20Meter displaySidestand switch• ON (stand retracted)• OFF (stand extended)Checking method Set on/off the sidestand switch. (with the transmission in gear.)Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 Connection of sidestandswitch 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 whenthe sidestand is retracted andextended.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 whenthe sidestand is retracted andextended.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.3 Connection of main switchcouplerCheck 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 whenthe sidestand is retracted andextended.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.4 Continuity of wire harness Open or short circuit →Replace the wire harness.Blue/Yellow–Blue/YellowPlace the main switch to theON position, and check thefault code indication whenthe sidestand is retracted andextended.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