Yamaha FJR1300R Service Manual

Also see for FJR1300: Owner's manual Owner's manual Owner's manual Owner's manual Owner's manual

Contents

7 - 23FIFUEL INJECTION SYSTEMCode No. 30 Symptom The motorcycle has overturned.Used diagnostic code No. 08 (lean angle cut-off switch)Inspection operation item and probable cause Operation item and countermeasure ReinstatementmethodDefective lean angle cut-off switch Replace if defective. Reinstated by turn-ing the main switchON (however, theengine cannot berestarted unlessthe main switch isfirst turned OFF).The motorcycle has overturned. Raise the motorcycle upright.Installed state of the lean angle cut-off switch Check the installed area for looseness orpinching.Connected state of connectorInspect the coupler for any pins that mayhave pulled out.Check the locking condition of the coupler.If there is a malfunction, repair it and connect itsecurely.Lean angle cut-off switch couplerMain wiring harness ECU couplerCode No. 31 Symptom The amount of air-fuel ratio feedback compensation is maintained contin-uously in the vicinity of the upper limit.Used diagnostic code No. 01 (throttle position sensor)Inspection operation item and probable cause Operation item and countermeasure ReinstatementmethodDefective O 2 sensor(unable to output a rich signal).Replace if defective. Reinstated bystarting the engine,warming it up untilthe coolant tem-perature is 60 °C(140 °F) or more,and then running itbetween 2,000 ~3,000 r/min untilthe engine troubleindicator turns off.Clogged injector. Replace if defective.Refer to “CHECKING THE INJECTOR”.Open circuit or ground short in wiring harnessor sub lead.Repair or replace if there is an open or shortcircuit.Main wiring harnessBlack/Blue - WhiteGray/Green - BlueThe fuel pressure is too low.Compare the fuel pressure at idle and withthrottle open.About the same → NormalToo low → Inspect the fuel pump.Inspect the delivery hosefor pinching or kinking.Inspect the pressure reg-ulator.Inspect the throttle posi-tion sensor.Other:Malfunction in the fuel system (disconnec-tion, etc.).Improper sealing of the intake system.Replace if defective.Refer to “CHECKING THE FUEL PUMP ANDPRESSURE REGULATOR OPERATION”.Repair or replace if there is a malfunction.Replace if defective.Refer to “CHECKING THE FUEL PUMP ANDPRESSURE REGULATOR OPERATION”.Execute diagnostic code 01.Repair or replace if there is a malfunction.Connected state of connectorInspect the coupler for any pins that mayhave pulled out.Check the locking condition of the coupler.If there is a malfunction, repair it and connect itsecurely.O 2 sensor couplerEngine wiring harness couplerMain wiring harness ECU couplerSub-wire harness coupler