Yamaha F400A 2022 - Page 186

4-13
Outboard motor troubleshooting
86
Immobilizer
(Communica-
tion error)
“Check Engine” is displayed.
Declining maximum engine
speed.
<Engine speeds do not syn-
chronize>
Check that Y-COP is con-
nected properly.
3-25
Measure the remote control
receiver input voltage.
—
Check the Y-COP circuit. —
112
ETV (Engine
ECM internal
circuit malfunc-
tion)
“Check Engine” is displayed.
High engine idle speed.
Throttle does not operate.
Engine speed is set at ap-
proximately 1500 r/min.
Replace the engine ECM. 7-37
113
ETV (Throttle
valve malfunc-
tion)
“Check Engine” is displayed.
High engine idle speed.
Throttle does not operate.
Engine speed is set at ap-
proximately 1500 r/min.
Measure the TPS output volt-
age using the YDIS.
5-21
Check the ETV circuit. A-10
Check the fuse. 5-10
Check the ETV motor relay. 5-22
114
ETV (Engine
ECM internal
circuit malfunc-
tion)
Engine will not start. Replace the engine ECM. 7-37
115
116
ETV (Throttle
valve malfunc-
tion)
“Check Engine” is displayed.
High engine idle speed.
Throttle does not operate.
Engine speed is set at ap-
proximately 1500 r/min.
Check the ETV circuit. A-10
Check the ETV. 6-29
117
ETV (Throttle
valve malfunc-
tion)
“Check Engine” is displayed.
High engine idle speed.
Throttle does not operate.
Engine speed is set at ap-
proximately 1500 r/min.
Check the ETV circuit. A-10
Check the fuse. 5-10
Check the ETV motor relay. 5-22
Check the ETV. 6-29
119
ETV (Throttle
valve malfunc-
tion)
“Check Engine” is displayed.
High engine idle speed.
Throttle does not operate.
Engine speed is set at ap-
proximately 1500 r/min.
Check the ETV circuit. A-10
123
ETV (Out of
specification)
“Check Engine” is displayed.
High engine idle speed.
Throttle does not operate.
Engine speed is set at ap-
proximately 1500 r/min.
Check the ETV circuit. A-10
Check the fuse. 5-10
Check the ETV motor relay. 5-22
Trou-
ble
code
Item (Condi-
tion)
Symptom Checking steps
See
page