Yamaha FJR1300R Service Manual

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Contents

7 - 20FIFUEL INJECTION SYSTEMCode No. 16 Symptom 1 Stuck throttle position sensor detected.2 Intake air pressure sensor - pipe system malfunction (clogged ordetached hose).Used diagnostic code No. 03 (intake air pressure sensor)No. 02 (atmospheric pressure sensor)No. 01 (throttle position sensor)Inspection operation item and probable cause Operation item and countermeasure Reinstatementmethod1 Defective throttle position sensor. Replace if defective.Refer to “FUEL INJECTION SYSTEM” inchapter 8.Reinstated bystarting the engine,operating it at idle,and then racing it.Throttle position sensor lead wire open circuitoutput voltage check(B/L - Y)Black/Blue - YellowOpen circuit item: Output voltageGround wire open circuit: 5 VOutput wire open circuit: 0 VPower supply wire open circuit: 0 VCheck for open circuit and replace the throttleposition sensor.2 Open or short circuit in wiring harness orsub lead.Repair or replace if there is an open or shortcircuit.Main wiring harnessBlack/Blue - Black/BlueYellow - YellowBlue - BlueSub leadBlack/Blue - Black/BlueYellow - YellowBlue - Blue1 Installed state of throttle position sensor. Check the installed area for looseness orpinching.Check that it is installed in the specifiedposition.Refer to “FUEL INJECTION SYSTEM” inchapter 8.2 Intake air pressure sensor hose detached,clogged, kinked, or pinched.Intake air pressure sensor malfunction atintermediate electrical potential.Atmospheric pressure sensor malfunction atintermediate electrical potential.Repair or replace the sensor hose.Inspect and repair the connection.Replace it if there is a malfunction.Common to 1 and 2: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.Throttle position sensor couplerMain wiring harness ECU couplerSub-wire harness coupler