Yamaha R15 2022 Service Manual page 406

FUEL INJECTION SYSTEM TROUBLESHOOTING
Fault code No.
Item
3 Wire harness continuity.
4 Defective radiator fan motor re-
lay.
5 Malfunction in ECU.
6 Delete the fault code and check
that the engine trouble warning
light goes off.
Fault code No. P0500
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Connection of front wheel sen-
sor coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
P0480
Normal signal is not received from the radiator fan motor relay.
Open or short circuit → Replace
the wire harness.
Between ECU coupler and radi-
ator fan motor relay coupler.
white/yellow–white/yellow
Between radiator fan motor re-
lay coupler and main switch
coupler.
brown–brown
Between main switch coupler
and main fuse.
red–red
Check the radiator fan motor re-
lay.
Replace if defective.
Replace the ECU.
Confirm that the fault code has
a condition of "Recover" using
the YDT, and then delete the
fault code.
P0500
Front wheel sensor: normal signals are not received from the front
wheel sensor.
Able to start engine
Able to drive vehicle
07
Vehicle speed pulse
0–999
Check that the number increases when the front wheel is rotated. The
number is cumulative and does not reset each time the front wheel is
stopped.
Maintenance job
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
8-73
ELEC
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the YDT.
Condition is "Recover" → Go to
item 6 and finish the service.
Condition is "Malfunction" → Go
to item 4.
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function 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
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check the condition of the
fault code using the malfunction
mode of the YDT.
Condition is "Recover" → Go to
item 8 and finish the service.
Condition is "Malfunction" → Go
to item 2.
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