Yamaha R15 2022, Service Manual

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8-91
FUEL INJECTION SYSTEM TROUBLESHOOTING
– + ELEC
Event code No. 30
4 Faulty VVA solenoid operation. Measure the VVA solenoid re-
sistance.
Replace if out of specification. Set the main switch to “ON”.
Start the engine and accelerate
to 7400 r/min.
Check the condition of the fault
code using the malfunction
mode of the YDT.
Condition is “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
Go
to item 5.
5 Malfunction in ECU. Replace the ECU. Service is finished.
6 Delete the fault code and check
that the engine trouble warning
light goes off. Confirm that the fault code has
a condition of “Recover” using
the YDT, and then delete the
fault code.
Event code No. 30
Item Latch up detected.
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. 08
Tool display
Lean angle sensor output voltage
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Procedure Remove the lean angle sensor and incline it more than 50 degrees.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 The vehicle has overturned. Raise the vehicle upright. Turn the main switch to “ON”,
then to “OFF”, and then back to
“ON”, and then check the
condition of the MIL.
MIL does not light on
→
Finish
the service.
MIL lights on
→
Go to item 2.
2 Installed condition of lean angle
sensor. Improperly installed sensor
→
Reinstall the sensor.
Turn the main switch to “ON”,
then to “OFF”, and then back to
“ON”, and then check the
condition of the MIL.
MIL does not light on
→
Finish
the service.
MIL lights on
→
Go to item 3.
Fault code No. P2645
Item
VVA (Variable Valve Actuator): Normal signal is not received from
the VVA solenoid circuit while driving the VVA solenoid.
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