TOHATSU 40 Service Manual page 282

4. With main key switch set to the ON position, check for
63
continuity between terminals (2) and (8). If meter does not
show continuity, replace main key switch.
Check for continuity between the following terminals, if
63
meter shows continuity, replace main key switch.
Terminal
4 6
and
Terminal
6 10
and
5. With main key switch set to the START position, check for
63
continuity between terminals (2), (8) and (12). If meter does
not show continuity between all three terminals, replace main key
switch.
Check for continuity between the following terminals, if
63
meter shows continuity, replace main key switch.
Terminal
4 6
and
3-/ 4-Cylinder
Terminal Terminal
4 10 4
and
Terminal Terminal
6 12 10
and
Terminal Terminal
4 10 6
and
ELECTRICAL SYSTEM
12
and
12
and
10
and
T1546
7-103