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Yamaha F400A 2022 - Page 191

Yamaha F400A 2022
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Outboard motor troubleshooting
4-18
160
161
162
163
Remote con-
trol system
(Main station
[LPS Irregular
signal])
“Check Engine” is displayed.
Alert indicator is ON.
<Engine speeds do not syn-
chronize>
Measure the LPS output volt-
age using the YDIS.
*2
Check for wiring continuity
between the LPS and the Dig-
ital Electronic Control ECM.
Locked at engine idle speed.
Shift actuator rod returns to
the N position.
Alert indicator is ON.
<Engine speeds do not syn-
chronize>
When either one of the trouble
codes 160 and 161, and ei-
ther one of the trouble codes
162 and 163 took place simul-
taneously.
Measure the LPS output volt-
age using the YDIS.
Check for wiring continuity
between the LPS and the Dig-
ital Electronic Control ECM.
164
Remote con-
trol system
(Main station
LPS Irregular
signal [Digital
Electronic Con-
trol ECM inter-
nal circuit
malfunction])
“Check Engine” is displayed.
Locked at engine idle speed.
Shift actuator rod returns to
the N position.
Shift actuator can be operat-
ed manually.
Alert indicator is ON.
Replace the Digital Electronic
Control ECM.
(When replacing the Digital
Electronic Control ECM with a
new one, resetting of Digital
Electronic Control ECM is
necessary)
*2
165
Remote con-
trol system
(Main station
[LPS Irregular
signal])
“Check Engine” is displayed.
Locked at engine idle speed.
Shift actuator rod returns to
the N position.
Alert indicator is ON.
<Difference in engine idle
speeds>
<Engine speeds do not syn-
chronize>
Measure the LPS output volt-
age using the YDIS.
*2
Check for wiring continuity
between the LPS and the Dig-
ital Electronic Control ECM.
Trou-
ble
code
Item (Condi-
tion)
Symptom Checking steps
See
page

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