Yamaha YZF-R1(B) 2012 Service Manual

Also see for YZF-R1 2012: Service manual

Contents

FUEL INJECTION SYSTEM8-82Fault code No. 41Symptom Open or short circuit of lean angle sensor leadFail-safe action Engine startup: ImpossibleRiding: ImpossibleDiagnostic monitor-ing code No. D:08Meter displayLean angle sensor• 0.4–1.4 (upright)• 3.7–4.4 (overturned)Checking method Remove the lean angle sensor and incline more than 45 degrees.Item/components andprobable cause Check or maintenance job Sensor inspection proce-dure1 Connection of lean anglesensor couplerCheck 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.Rotate the main switch to theOFF position first, and thenrotate it to the ON positionagain.Then, check the fault codeindication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.2 Connection of main harnessECU couplerCheck the connection of thecoupler is secure.Remove the coupler, andcheck each pin (for bending,wear, or locking).Poor connection → Connectit securely, or repair/replacethe harness.Rotate the main switch to theOFF position first, and thenrotate it to the ON positionagain.Then, check the fault codeindication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.3 Continuity of wire harness Open or short circuit →Replace the wire harness.Black/Blue–Black/BlueYellow/Green–Yellow/GreenBlue–BlueRotate the main switch to theOFF position first, and thenrotate it to the ON positionagain.Then, check the fault codeindication.No fault code indicated. →Recovered.Fault code indicated. →Check the next step.