4-16
Outboard motor troubleshooting
Troubleshooting the PTT unit
Troubleshooting consists of the following 3 items:
Symptom 1: Specific trouble conditions
Symptom 2: Trouble conditions of an area or individual part
Cause: Trouble causes of symptom 2
— : Not applicable
Symptom 1: PTT unit does not operate.
Symptom 2
Cause
Checking steps
See
page
PTT relay does not oper-
ate
Blown fuse
Check the fuse.
PTT switch malfunction
Check the PTT switch.
PTT relay malfunction
Check the PTT relay.
Short, open, or loose connec-
tion of the wiring harness
Measure the PTT switch input voltage.
Measure the PTT relay input voltage.
Check for wiring harness continuity
between the PTT switch and the PTT
relay.
Check for wiring harness continuity
between the PTT switch and the fuse.
PTT motor does not
operate
PTT motor malfunction
Check the PTT motor.
Short, open, or loose connec-
tion in PTT motor circuit
Check for continuity between the PTT
motor and the PTT relay terminal.
—
Bent tilt ram or trim ram
Check the tilt ram and trim ram.
Stuck tilt ram or trim ram
Disassemble and check the PTT unit.
PTT fluid pressure does
not increase
Manual valve open
Check the manual valve.
—
Check the hydraulic pressure.
Insufficient PTT fluid
Add sufficient PTT fluid.
PTT fluid leakage
Check the PTT fluid leakage.
Clogged fluid passage
Disassemble and check the PTT unit.
Check the filter for dirt and obstructions.
Check the valves for damage.
Check the fluid passage for obstructions.
PTT motor malfunction
Check the PTT motor.
Gear pump malfunction
Check the gear pump operation.
Summary of Contents for F150A
Page 1: ...SERVICE MANUAL 63P 28197 3P 12 F150A FL150A F150B FL150B ...
Page 4: ......
Page 48: ...2 3 Electronic control system Engine ECM component 2 3 4 6 5 1 8 7 10 9 11 12 14 15 16 13 17 ...
Page 110: ...3 41 Propeller selection MEMO ...
Page 129: ...4 18 Outboard motor troubleshooting MEMO ...
Page 175: ...5 44 PTT system 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 247: ...7 22 Starter motor Terminal nut 3 9 N m 0 9 kgf m 6 6 ft lb ...
Page 385: ...8 78 Shimming counter rotation model 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 449: ...9 62 PTT gear pump 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 474: ...i 8 Index 0 1 2 3 5 6 7 8 9 10 10 A MEMO ...
Page 475: ......
Page 476: ...Oct 2011 2 ABE E ...