Ptt Unit; State 1 Ptt Will Not Operate - TOHATSU MFS25 Service Manual

3.PTT Unit

State 1 PTT will not operate.
Check operation of PTT motor.
Operating
noise heard?
YES
Check that manual valve
is closed.
Closed?
YES
Go to next page.
25/30 2006
NO
Check battery and fuse.
Normal?
Check electrical conductivity
of PTT switch.
Conductive?
Check electrical conductivity
of PTT solenoid.
Conductive?
Check wire harness between
battery, PTT solenoid and
PTT switch.
Conductive?
Disassemble PTT motor
to check.
NO
YES
NO
Replace PTT switch.
YES
NO
Replace PTT solenoid.
YES
NO
YES
NO
Close manual valve.
Repair or replace
defective parts.
Repair or replace
defective parts.
9-17
9