Yamaha F400A 2022 - Page 197

Outboard motor troubleshooting
4-24
221
DI fuel pressure
(S)
(DI fuel pres-
sure rise S)
(Out of specifi-
cation)
“Check Engine” is displayed.
Engine speed is limited to
2000 r/min.
Check fuel pipe for be
clogged.
—
Check the operation of the in-
jector in the YDIS “Stationary
test”.
5-29
222
DI fuel pump
(S)
(Irregular sig-
nal)
“Check Engine” is displayed.
Engine speed is limited to
2000 r/min.
Check the wiring is connected
properly and that there is no
damage.
A-12
Check the injector driver input
voltage.
5-28
Check the operation of the di-
rect injection pump (STBD) in
the YDIS “Stationary test”.
5-30
223
Steering sys-
tem
(Irregular sig-
nal)
Stop engine synchronization
control.
Check detail by using YDIS
CAN communication cable.
—
224
Steering sys-
tem–Outboard
(SCU)
(Irregular sig-
nal)
Stop engine synchronization
control.
Check detail by using YDIS
CAN communication cable.
—
225
Steering sys-
tem–Helm
(HELM)
(Irregular sig-
nal)
Stop engine synchronization
control.
Check detail by using YDIS
CAN communication cable.
—
241,
242,
243,
244,
245,
246,
247,
248
Injector#1–In-
jector#8
(Irregular sig-
nal)
“Check Engine” is displayed.
Engine speed is limited to
2000 r/min.
Check the wiring is connected
properly and that there is no
damage.
A-12
Check the operation of the in-
jector in the YDIS “Stationary
test”.
5-29
Check the injector driver. 5-28
Trou-
ble
code
Item (Condi-
tion)
Symptom Checking steps
See
page