Fuel injection system of motorcycle Yamaha YZF-R1 Y(C) (2009-2014)

Fuel injection system — circuit diagram
1. Main switch; 4. Main fuse; 6. ETV (Electronic Throttle Valve) fuse; 7. Battery; 8. Fuel injection system fuse; 11. Relay unit; 12. Starting circuit cut-off relay; 13. Fuel pump relay; 14. Sidestand switch; 15. Fuel pump; 17. Throttle position...

ECU selfdiagnostic function
The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system is operating normally. If this function detects a malfunction in the system, it immediately operates the engine under substitute characteristics...

Fuel injection system — troubleshooting method
The engine operation is not normal and the engine trouble warning light comes on. 1. Check: Fault code number: a. Check the fault code number displayed on the meter. b. Identify the faulty system with the fault code. c. Identify the probable cause...

Fuel injection system — diagnostic mode
Setting the diagnostic mode: 1. Turn the main switch to "OFF" and set the engine stop switch to "q". 2. Disconnect the wire harness coupler from the fuel pump. 3. Simultaneously press and hold the "SELECT" and "RESET" buttons, turn the main switch...

Fault code No. 11. Normal signals are not received from the cylinder identification sensor
This section describes the measures per fault code number displayed on the meter. Check and service the items or components that are the probable cause of the malfunction following the order given. After the check and service of the malfunctioning...

Fault code No. 12. Normal signals are not received from the crankshaft position sensor
Fault code No. 12 Symptom Normal signals are not received from the crankshaft position sensor. Fail-safe action Engine startup: Impossible Riding: Impossible Diagnostic monitoring code No. Meter display Checking method Item/components and probable...

Fault code No. 13. Open or short circuit of intake air pressure sensor lead
If fault codes 13 and 14 are indicated simultaneously, take the actions specified for fault code 13 first. Fault code No. 13 Symptom Open or short circuit of intake air pressure sensor lead Fail-safe action Engine startup: Possible Riding: Possible...

Fault code No. 14. The intake air pressure sensor has failed (due to clogging of hose or sensor disconnection)
If fault codes 13 and 14 are indicated simultaneously, take the actions specified for fault code 13 first. Fault code No. 14 Symptom The intake air pressure sensor has failed (due to clogging of hose or sensor disconnection). Fail-safe action Engine...

Fault code No. 15. Open or short circuit of throttle position sensor lead
Fault code No. 15 Symptom Open or short circuit of throttle position sensor lead Fail-safe action Engine startup: Possible under certain conditions Riding: Possible under certain conditions Diagnostic monitoring code No. D:01 D:13 D:01 Meter display...

Fault code No. 19. Open or short circuit of ECU input line (Blue/Yellow lead)
Fault code No. 19 Symptom Open or short circuit of ECU input line (Blue/Yellow lead) Fail-safe action Engine startup: Impossible Riding: Impossible Diagnostic monitoring code No. D:20 Meter display Sidestand switch: ON (stand retracted) OFF (stand...

Fault code No. 20. When the main switch is ON, there is a big difference in voltage value of the intake air pressure sensor and atmospheric pressure sensor
Fault code No. 20 Symptom When the main switch is ON, there is a big difference in voltage value of the intake air pressure sensor and atmospheric pressure sensor Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code...

Fault code No. 21. Open or short circuit of coolant temperature sensor lead
Fault code No. 21 Symptom Open or short circuit of coolant temperature sensor lead Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. D:06 Meter display Displays the coolant temperature. Checking method Compare...

Fault code No. 22. Open or short circuit of intake air temperature sensor lead
Fault code No. 22 Symptom Open or short circuit of intake air temperature sensor lead Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. D:05 Meter display Displays the intake air temperature. Checking method...

Fault code No. 23. Open or short circuit of atmospheric pressure sensor lead
Fault code No. 23 Symptom Open or short circuit of atmospheric pressure sensor lead Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. D:02 Meter display Displays the atmospheric pressure. Checking method...

Fault code No. 24. The O2 sensor does not operate
Fault code No. 24 Symptom The O2 sensor does not operate. Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. Meter display Checking method Item/components and probable cause Check or maintenance job Sensor...

Fault code No. 30. Turnover of vehicle
Fault code No. 30 Symptom Turnover of vehicle Fail-safe action Engine startup: Impossible Riding: Impossible Diagnostic monitoring code No. D:08 Meter display Lean angle sensor: 0.4-1.4 (upright) 3.7-4.4 (overturned) Checking method Remove the lean...

Fault code No. 33. Ignition coil #1 primary lead malfunction
Fault code No. 33 Symptom Ignition coil #1 primary lead malfunction Fail-safe action Engine startup: Possible (depending on the number of failed cylinders) Riding: Possible (depending on the number of failed cylinders) Diagnostic monitoring code No....

Fault code No. 34. Ignition coil #2 primary lead malfunction
Fault code No. 34 Symptom Ignition coil #2 primary lead malfunction Fail-safe action Engine startup: Possible (depending on the number of failed cylinders) Riding: Possible (depending on the number of failed cylinders) Diagnostic monitoring code No....

Fault code No. 35. Ignition coil #3 primary lead malfunction
Fault code No. 35 Symptom Ignition coil #3 primary lead malfunction Fail-safe action Engine startup: Possible (depending on the number of failed cylinders) Riding: Possible (depending on the number of failed cylinders) Diagnostic monitoring code No....

Fault code No. 36. Ignition coil #4 primary lead malfunction
Fault code No. 36 Symptom Ignition coil #4 primary lead malfunction Fail-safe action Engine startup: Possible (depending on the number of failed cylinders) Riding: Possible (depending on the number of failed cylinders) Diagnostic monitoring code No....

Fault code No. 39. Open or short circuit of primary injector lead
Fault code No. 39 Symptom Open or short circuit of primary injector lead Fail-safe action Engine startup: Possible (depending on the number of failed cylinders) Riding: Possible (depending on the number of failed cylinders) Diagnostic monitoring...

Fault code No. 40. Open or short circuit of secondary injector lead
Fault code No. 40 Symptom Open or short circuit of secondary injector lead Fail-safe action Engine startup: Possible (depending on the number of failed cylinders) Riding: Possible (depending on the number of failed cylinders) Diagnostic monitoring...

Fault code No. 41. Open or short circuit of lean angle sensor lead
Fault code No. 41 Symptom Open or short circuit of lean angle sensor lead Fail-safe action Engine startup: Impossible Riding: Impossible Diagnostic monitoring code No. D:08 Meter display Lean angle sensor: 0.4-1.4 (upright) 3.7-4.4 (overturned)...

Fault code No. 42. Normal signals are not received from the speed sensor
Fault code No. 42 Symptom A. Normal signals are not received from the speed sensor. B. Open or short circuit of gear position sensor lead A Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. D:07 (Speed sensor)...

Fault code No. 43. Incorrect voltage supplied to the fuel injector and fuel pump
Fault code No. 43 Symptom Incorrect voltage supplied to the fuel injector and fuel pump Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. D:50 Meter display Approximately 12.0 Checking method Set the engine...

Fault code No. 44. An error is detected while reading or writing on EEP-ROM
Fault code No. 44 Symptom An error is detected while reading or writing on EEP-ROM Fail-safe action Engine startup: Under certain conditions Riding: Under certain conditions Diagnostic monitoring code No. D:60 Meter display The in self diagnostic...

Fault code No. 46. Incorrect voltage is supplied to the ECU
Fault code No. 46 Symptom Incorrect voltage is supplied to the ECU. Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. Meter display Checking method Item/components and probable cause Check or maintenance job...

Fault code No. 50. ECU memory malfunction
Fault code No. 50 Symptom ECU memory malfunction Fail-safe action Engine startup: Under certain conditions Riding: Under certain conditions Diagnostic monitoring code No. Meter display Checking method Item/components and probable cause Check or...

Fault code No. 59. Open or short circuit of accelerator position sensor lead
Fault code No. 59 Symptom Open or short circuit of accelerator position sensor lead Fail-safe action Engine startup: Possible under certain conditions Riding: Possible under certain conditions Diagnostic monitoring code No. D:14 D:15 D:14 Meter...

Fault code No. 60. Defect Found in YCC-T Drive Type
Fault code No. 60 Symptom Defect Found in YCC-T Drive Type Fail-safe action Engine startup: Possible under certain conditions Riding: Possible under certain conditions Diagnostic monitoring code No. Meter display Checking method Item/components and...

Fault code No. 66. Open or short circuit of steering damper solenoid lead
Fault code No. 66 Symptom Open or short circuit of steering damper solenoid lead Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. D:47 Meter display The steering damper warning light lights up. Checking...

Fault code No. 70. Engine has been left idling (The ECU automatically stops the engine after 20 minutes if it is left idling)
Fault code No. 70 Symptom Engine has been left idling. (The ECU automatically stops the engine after 20 minutes if it is left idling.) Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. Meter display Checking...

Fault code No. Er-1. No signal is received from the ECU
Fault code No. Er-1 Symptom No signal is received from the ECU. Fail-safe action Engine startup: Impossible if ECU Failure Riding: Impossible if ECU Failure Diagnostic monitoring code No. Meter display Checking method Item/components and probable...

Fault code No. Er-2. No signal is sent from ECU
Fault code No. Er-2 Symptom No signal is sent from ECU. Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. Meter display Checking method Item/components and probable cause Check or maintenance job Sensor...

Fault code No. Er-3. Correct data cannot be received from the ECU
Fault code No. Er-3 Symptom Correct data cannot be received from the ECU. Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. Meter display Checking method Item/components and probable cause Check or maintenance...

Fault code No. Er-4. No registration data can be received from the meter unit
Fault code No. Er-4 Symptom No registration data can be received from the meter unit. Fail-safe action Engine startup: Possible Riding: Possible Diagnostic monitoring code No. Meter display Checking method Item/components and probable cause Check or...

Fuel pump system — circuit diagram
1. Main switch; 4. Main fuse; 7. Battery; 8. Fuel injection system fuse; 11. Relay unit; 13. Fuel pump relay; 15. Fuel pump; 20. ECU (engine control unit); 62. Right handlebar switch; 65. Engine stop switch; 94. Ignition fuse; 95. Engine ground; 96....

Fuel pump system — troubleshooting
If the fuel pump fails to operate. Before troubleshooting, remove the following part(s): 1. Rider seat 2. Fuel tank 3. Passenger seat 4. Left side cowling 1. Check the fuses. (Main, ignition and fuel injection system) Refer to " Checking the fuses...