Yamaha F30B 2018, Service Manual

Page: 75 / 348

4-12
Outboard motor troubleshooting
S ymptom 1: Y-COP lock and unlock function, but there is no answer-back (beep).
Troubleshooting the PTT unit
S ymptom 1: PTT unit does not operate.
Symptom 2 Cause Checking steps
See
page
—
Buzzer malfunction Check the buzzer. —
Short, open, or loose con-
nection of the wire harness
Measure the buzzer input voltage. —
Check the Y-COP circuit. —
Symptom 2 Cause Checking steps
See
page
PTT relay does not
operate
Blown fuse Check the fuse. 5-1
PTT switch malfunction Check the PTT switch. 5-45
PTT relay malfunction Check the PTT relay. 5-44
Short, open, or loose con-
nection of the wire harness
Measure the PTT switch input volt-
age.
5-45
Measure the PTT relay input volt-
age.
5-44
Check for continuity between the
PTT switch and the PTT relay. A-16
A-17
PTT motor does not
operate
PTT motor malfunction Check the PTT motor. 9-33
Bent trim and tilt ram Check the trim and tilt ram. 9-41
Stuck trim and tilt ram
Disassemble and check the PTT
unit.
9-41
Short, open, or loose con-
nection in PTT motor circuit
Check for continuity between the
PTT motor and the PTT relay termi-
nal.
A-16
PTT fluid pressure
does not increase
Manual valve open Check the manual valve. 9-27
Insufficient PTT fluid Add sufficient PTT fluid. 10-20
PTT fluid leakage Check for PTT fluid leakage. 10-20
Clogged fluid passage
Disassemble and check the PTT
unit. 9-38
9-41
Check the filter for dirt and obstruc-
tions.
9-40
Check the valves for damage. 9-40
Check the fluid passages for ob-
structions. 9-38
9-41
PTT motor malfunction Check the PTT motor. 9-33
Gear pump malfunction Check the gear pump operation. 9-27