Yamaha YZF-R1B 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-805 Connection of secondaryinjector sub-wire harnesscouplerCheck 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.Check the injector’s operatingnoise by the diagnostic mode(Code No.40–43).Injector’s operating noise →Reset with the diagnosticcode 63. Recovered.No injector’s operating noise→ Check the next step.Fault code No. 40Symptom Open or short circuit of secondary injector leadFail-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:40D:41D:42D:43D:40Actuator oper-ationActuates the secondary injector #1 five times at one-second inter-vals.Illuminates the engine trouble warning light.Checkingmethod Check the operating sound of the secondary injector #1 five times.D:41Actuator oper-ationActuates the secondary injector #2 five times at one-second inter-vals.Illuminates the engine trouble warning light.Checkingmethod Check the operating sound of the secondary injector #2 five times.D:42Actuator oper-ationActuates the secondary injector #3 five times at one-second inter-vals.Illuminates the engine trouble warning light.Checkingmethod Check the operating sound of the secondary injector #3 five times.D:43Actuator oper-ationActuates the secondary injector #4 five times at one-second inter-vals.Illuminates the engine trouble warning light.Checkingmethod Check the operating sound of the secondary injector #4 five times.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