TOHATSU MD 30B2 Service Manual page 326

O
Troubleshooting
K
PTT Unit
State 1 PTT unit will not operate.
Check operation of PTT
motor.
Operating
noise heard?
YES
Check that manual valve is
closed.
Closed?
YES
Go to next page.
9-30
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.
TLD D30/40/50B2 2013