
SELF-DIAGNOSTIC FUNCTION TABLE (FOR FUEL INJECTION SYSTEM)

Fault code |
Item |
Page |
---|---|---|
12 |
Crankshaft position sensor: no normal signals are received from the crankshaft position sensor. |
Fault code No. 12 |
13 |
Intake air pressure sensor: open or short circuit detected. |
Fault code No. 13 |
14 |
Intake air pressure sensor: hose system malfunction (clogged or detached hose). |
Fault code No. 14 |
15 |
Throttle position sensor: open or short circuit detected. |
Fault code No. 15 |
16 |
Throttle position sensor: stuck throttle position sensor is detected. |
Fault code No. 16 |
21 |
Coolant temperature sensor: open or short circuit detected. |
Fault code No. 21 |
22 |
Intake air temperature sensor: open or short circuit detected. |
Fault code No. 22 |
30 |
The vehicle has overturned. |
Fault code No. 30 |
33 |
Ignition coil: open or short circuit detected in the primary lead of the ignition coil. |
Fault code No. 33 |
39 |
Injector: open or short circuit detected. |
Fault code No. 39 |
41 |
ECU: built-in lean angle sensor malfunction. |
Fault code No. 41 |
43 |
Fuel system voltage: incorrect voltage supplied to the main relay and CCU. |
Fault code No. 43 |
44 |
EEPROM fault code number: an error is detected while reading or writing on EEPROM. |
Fault code No. 44 |
46 |
Vehicle system power supply: normal voltage is not supplied to the ECU. |
Fault code No. 46 |
50 |
ECU: faulty ECU memory. |
Fault code No. 50 |
70 |
Engine forcibly stops when the vehicle is left idling for a long period of time. |
Fault code No. 70 |
DIAGNOSTIC CODE: SENSOR OPERATION TABLE

Diagnostic code No. |
Item |
Display |
Procedure |
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01 |
Throttle angle |
Displays the throttle angle. |
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03 |
Pressure of suction pipe |
Displays the intake air pressure.
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The atmospheric pressure is displayed on the Yamaha diagnostic tool. |
05 |
Intake air temperature |
Displays the intake air temperature. |
Compare the actually measured intake air temperature with the Yamaha diagnostic tool display value. |
06 |
Coolant temperature |
Displays the coolant temperature. |
Compare the actually measured coolant temperature with the Yamaha diagnostic tool display value. |
08 |
Lean angle sensor |
Displays the output voltage. |
Remove the ECU, and incline it 45° or more. |
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09 |
Monitor voltage |
Displays the voltage of the external battery connected to the Yamaha diagnostic tool.
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21 |
Neutral switch |
Operate the shift pedal. |
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25 |
Gear position switch |
Operate the shift pedal. |
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60 |
EEPROM fault code display |
— |
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61 |
Malfunction history (△) code display *1 |
— |
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62 |
Malfunction history (△) code erasure *1 |
Replace all (△) with ( |
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64 |
Setting history display |
Displays the presence or absence of the setting history by Power Tuner. |
— |
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65 |
Setting map erasure |
Displays the presence or absence of the setting history by Power Tuner. |
Erase all setting maps by the operation start processing. |
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70 |
Program version number |
Displays a program version No. |
— |
*1: Symbols used in the explanations of the malfunction history
: Normal
×: There is currently a malfunction or abnormal condition.
△: A malfunction or abnormal condition occurred previously, but the affected system or component is currently operating normally.
DIAGNOSTIC CODE: ACTUATOR OPERATION TABLE

Diagnostic code No. |
Item |
Actuation |
Procedure |
---|---|---|---|
30 |
Ignition coil |
Actuates the ignition coil five times at one-second intervals. “WARNING” on the Yamaha diagnostic tool blinks five times when the ignition coil is actuated. |
Check that a spark is generated five times.
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36 |
Injector |
Actuates the injector five times at one-second intervals. “WARNING” on the Yamaha diagnostic tool blinks five times when the injector is actuated. |
TIP: Before performing this operation, be sure to disconnect the fuel pump coupler. Check that injector is actuated five times by listening for the operating sound. |