Yamaha F40B - Checking the PTT Relay

BRKT
Bracket unit
7-53 67C3K11
Checking the PTT relay
1. Check the PTT relay for continuity.
Replace if out of specification.
2. Connect the positive battery lead to the
light green (Lg) lead 5, and the negative
battery lead to the black (B) lead 1 as
shown, and then check the PTT relay for
continuity. Replace the PTT relay if out of
specification.
3. Connect the positive battery lead to the
sky blue (Sb) lead 4, and the negative
battery lead to the black (B) lead 1 as
shown, and then check the PTT relay for
continuity. Replace the PTT relay if out of
specification.
PTT relay continuity
Black (B) 1 – Green (G) 2
Black (B) 1 – Blue (L) 3
Black (B) 1 –
Sky blue (Sb) 4
Black (B) 1 –
Light green (Lg) 5
Continuity
Red (R) 6 – Green (G) 2
Red (R) 6 – Blue (L) 3
No continuity
S67C7107
L
G
B
R
Lg
Sb
G
Lg
Sb
L
R
B
4
2
3
6
1
2
3
6
1
5
5
4
PTT relay continuity
Red (R) 6 – Green (G) 2 Continuity
Red (R) 6 – Blue (L) 3
Green (G) 2 – Blue (L) 3
No continuity
PTT relay continuity
Red (R) 6 – Blue (L) 3 Continuity
Red (R) 6 – Green (G) 2
Green (G) 2 – Blue (L) 3
No continuity
S67C7108
Lg
Sb
G
L
R
B
5
2
3
1
6
S67C7109
G
L
R
B
Sb
Lg
4
2
1
3
6