Yamaha YZF-R1B 2012 Service Manual

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Contents

FUEL INJECTION SYSTEM8-51If fault codes 13 and 14 are indicated simultaneously, take the actions specified for fault code 13first.Fault code No. 14Symptom The intake air pressure sensor has failed (due to clogging of hose orsensor disconnection).Fail-safe action Engine startup: PossibleRiding: PossibleDiagnostic monitor-ing code No. D:03Meter display Displays the intake air pressure.Checking method Set the engine stop switch to “ ”, and then push the start switch“ ”. (If the display value changes, the performance is OK.)Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 The intake air pressure sen-sor hose is damaged, discon-nected, clogged, twisted orbent.Repair or replace the sensorhose.Starting the engine and oper-ating it at idle.Fully close the throttle andcheck the fault recovery.2 Intake air pressure sensormalfunctionCheck in the diagnostic mode(Code No. 03).When engine is stopped:Atmospheric pressure at thecurrent altitude and weatherconditions is indicated.0 m above sea level: Approx.101 kPa1000 m above sea level:Approx. 90 kPa2000 m above sea level:Approx. 80 kPa3000 m above sea level:Approx. 70 kPaWhen engine is cranking:Make sure that the indicationvalue changes.The value does not changewhen engine is cranking. →Replace the intake air pres-sure sensor.Sensor inspection procedureRefer to “CHECKING THEINTAKE AIR PRESSURESENSOR” on page 8-146.3 ECU malfunction Replace the ECU.Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk