Yamaha YZF-R1P Service Manual

Contents

7 - 5FIFUEL INJECTION SYSTEMTROUBLESHOORING CHART“Engine runs irregularly.” or “Engine trouble warning light is illuminated.”* Engine trouble warning light may not be illuminated even if the engine runs irregularly.When the engine trouble warning light is illumi-natedChecking the self-diagnostic fault code number:Check the self-diagnostic fault code number dis-played on the meter.Specifying the malfunctioned system:Specify the malfunctioned system by referring tothe Fail-safe actions table.Presuming the cause:Presume the malfunction cause by referring to theDiagnostic monitoring code table.Checking and repaining the presumed place of mal-function.DiagnosticMonitoring code No.YESDiagnosticMonitoring code No.NONECheck and repair inaccordance with the“Troubleshootingdetails”, monitoring theoperation of sensor andactuator in the Diagnosticmonitoring mode (Referto “Diagnostic modetable” in chapter 7.).Check and repair inaccordance with thetrouble shootingdetails.ECU reinstatement action:Perform ECU reinstatement action referring to thereinstatement method in the troubleshooting details.Repair CompletionChecking the meter display:Check whether the self-diagnostic fault code num-ber is shown after turning the main switch OFFonce, and then turning it back ON.Not displayedErasing the malfunction history:*Malfunction history will be stored even if the mainswitch is turned OFF. To erase the malfunction his-tory, it is required to operate to erase the malfunctionhistory in the Diagnostic monitoring mode. (Refer toDiagnostic mode table (Diagnostic code No.62))When the engine trouble warning light is not illumi-natedInspecting the sensor actuator: Check the operation offollowing sensors and actuators in the Diagnostic moni-toring mode (Refer to “Diagnostic mode table” in chapter7.)01: Throttle position sensor (throttle angle)30: Ignition coil #131: Ignition coil #232: Ignition coil #333: Ignition coil #436: Injector #137: Injector #238: Injector #339: Injector #448: Al system solenoidOKOKOKMalfunction ofengine unitOKNGNGCheck and repairthe inner parts ofengine referring tothe engine editionof chapter 5.Checking the engine condition.Displayedagain.* Operation when the engine trouble warning light is illumi-nated.Defective sensoror actuatorCheck and repairthe correspondingsensor or actuator.