Yamaha R15 2022 Service Manual page 424

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