Yamaha F30B 2018, Service Manual

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4-7
Outboard motor troubleshooting
Troubleshooting procedure (trouble code not detected)
Troubleshooting consists of the following 5 items:
Symptom 1: Specific trouble conditions
Symptom 2: Trouble conditions of an area or individual part
Cause: Trouble causes of symptom 2
Checking steps: Method for checking
See page: Reference page
—: Not applicable
Troubleshooting the power unit
S ymptom 1: Engine does not crank.
S ymptom 1: Engine will not start (engine cranks).
Symptom 2 Cause Checking steps
See
page
Starter motor does
not operate
Gear shift not in the N posi-
tion
Set the gear shift to the N position. 10-4
Blown fuse Check the fuse. 5-1
Starter relay malfunction Check the starter relay. 5-34
Engine start switch mal-
function
Check the engine start switch. 5-35
Neutral switch malfunction Check the neutral switch. —
Short, open, or loose con-
nection in starter motor cir-
cuit
Check the starter relay input voltage. 5-34
Check the wire harness for continui-
ty.
A-16
Starter motor malfunction
Disassemble and check the starter
motor.
5-36
Starter motor oper-
ates, but the engine
does not crank
Stuck piston or crankshaft
Disassemble and check the power
unit.
7-49
Stuck drive shaft
Check the drive shaft bushing. 9-16
Disassemble and check the lower
unit.
8-11
Symptom 2 Cause Checking steps
See
page
Engine ECM does not
operate
Blown fuse Check the fuse. 5-3
Main relay malfunction Check the main relay. 5-17
Short, open, or loose con-
nection in the engine ECM
circuit
Check for wire harness continuity
between the main relay and the en-
gine ECM.
A-15
Check for continuity between the en-
gine ECM and ground.
5-18