Inspection Of Ptt Solenoid; Inspection Of Ptt Switch - TOHATSU TLDI MD 115A SERIES Service Manual

Electrical System

22) Inspection of PTT Solenoid

This test can be made without removing parts.
1. Disconnect positive and negative cables from battery.
Disconnect PTT leads from terminals 1 and 2.
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 (-)
Terminal 2 - Terminal 4 (-)
Terminal 1 - Terminal 3 (+)
Terminal 2 - Terminal 3 (+)
Connect circuit tester leads between terminals 1 and 3
4.
of PTT solenoid.
As shown in diagram ∫, connect sky blue (Sb) terminal to
5.
positive battery terminal, and black (B) lead wire to
negative battery terminal.
Check electrical conductivity between terminals 1 and 3.
6.
If non conductive, replace UP side PTT solenoid.
Connect circuit tester leads between terminals 2 and 3
7.
of PTT solenoid.
As shown in diagram ç, connect pink (P) terminal to
8.
positive battery terminal, and black (B) lead wire to
negative battery terminal.
Check electrical conductivity between terminals 2 and 3.
9.
If non conductive, replace DOWN side PTT solenoid.

23) Inspection of PTT Switch

1. Check electrical conductivity of PTT switch. Replace if
other than specified value.
Lead Wires
Switch Position Sky Blue (Sb)
Up (Ascend)
Free
Down (Descend)
8-14
Conductive
Conductive
No Conductivity
Red (R) Pink (P)
å
DOWN
B
4
3
P
Sb
∫
B
- +
Sb
ç
DOWN
B
3
- +
P
UP
4
2
1
3
UP
1
3
2
TLDI 115A 2007