Yamaha R15 2022 Service Manual page 404

FUEL INJECTION SYSTEM TROUBLESHOOTING
Fault code No. P0351
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Connection of ignition coil cou-
pler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
2 Connection of ECU 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).
3 Wire harness continuity.
4 Installed condition of ignition
coil.
P0351
Ignition coil: open or short circuit is detected in the lead of the igni-
tion coil.
Unable to start engine
Unable to drive vehicle
30
Actuates the ignition coil five times at one-second intervals.
The check indicator on the YDT screen comes on each time the ignition
coil is actuated.
Check that a spark is generated five times.
• Connect an ignition checker.
Maintenance job
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Open or short circuit → Replace
the wire harness.
Between ignition coil coupler
and ECU coupler.
orange–orange
Check for looseness or pinch-
ing.
Improperly installed ignition coil
→ Reinstall or replace the igni-
tion coil.
8-71
ELEC
Confirmation of service com-
pletion
Start the engine and let it idle for
approximately 5 seconds.
Check the fault code using the
malfunction mode of the YDT.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 2.
Start the engine and let it idle for
approximately 5 seconds.
Check the fault code using the
malfunction mode of the YDT.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 3.
Start the engine and let it idle for
approximately 5 seconds.
Check the fault code using the
malfunction mode of the YDT.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 4.
Start the engine and let it idle for
approximately 5 seconds.
Check the fault code using the
malfunction mode of the YDT.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 5.
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