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Yamaha F150A - Page 126

Yamaha F150A
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4-15
Outboard motor troubleshooting
0
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A
Symptom 1: Discharged battery
Symptom 1: Y-COP lock and unlock do not function.
Symptom 1: Y-COP lock and unlock function, but there is no answer-back (beep).
Symptom 2 Cause Checking steps
See
page
Battery performance decrease
Check the battery capacity and specific
gravity.
10-4
Short, open, or loose connec-
tion in charging circuit
Check the battery cable and terminals
for proper connections.
Check the charging circuit for wiring con-
nection and damage.
A-6
A-8
Lighting coil malfunction
Measure the lighting coil output peak
voltage.
5-19
Measure the lighting coil resistance. 5-19
Rectifier Regulator malfunction
Measure the Rectifier Regulator output
voltage.
5-19
Check the Rectifier Regulator for conti-
nuity.
5-19
Symptom 2 Cause Checking steps
See
page
There is an answer-back
(beep)
Y-COP transmitter malfunction
Check the button cell battery voltage. 5-31
Replace with a spare transmitter.
Short, open, or loose connec-
tion of the wiring harness
Check the Y-COP circuit. 5-30
Symptom 2 Cause Checking steps
See
page
Buzzer malfunction Check the buzzer. 5-30
Short, open, or loose connec-
tion of the wiring harness
Measure the buzzer input voltage. 5-30
Check the Y-COP circuit. 5-30

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