TOHATSU MD 30B2 Service Manual page 295

21) Inspection of PTT Solenoid
This test can be made without removing parts.
1. Disconnect positive and negative cables from battery.
2. Disconnect PTT leads from terminals 1 and 2.
3. Check electrical conductivity of PTT solenoid. Replace if
other than specified value.
PTT Solenoid Conductivity
Sky Blue (Sb) -Black (B)
Pink (P) -Black (B)
Terminal 1 - Terminal 4 (-) Conductive
Terminal 2 - Terminal 4 (-)
Terminal 1 - Terminal 3 (+) No Conductivity
Terminal 2 - Terminal 3 (+)
4. Connect circuit tester leads between terminals 1 and 3
of PTT solenoid.
5. As shown in diagram ∫, connect sky blue (Sb) terminal
to positive battery terminal, and black (B) lead wire to
negative battery terminal.
6. Check electrical conductivity between terminals 1 and 3.
If non conductive, replace UP side PTT solenoid.
7. Connect circuit tester leads between terminals 2 and 3
of PTT solenoid.
8. As shown in diagram ç, connect pink (P) terminal to
positive battery terminal, and black (B) lead wire to
negative battery terminal.
9. Check electrical conductivity between terminals 2 and 3.
If non conductive, replace DOWN side PTT solenoid.
TLD D30/40/50B2 2013
å
Conductive
∫
ç
DOWN
B
4
3
2
P
Sb
B
- +
Sb
DOWN
B
2
3
- +
P
UP
4
1
3
UP
1
3
8
8-13