Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry or tools contact
positive electrical circuits, a direct short may
result. Damage to equipment, injury or death
to personnel may occur.
(1) Disconnect mode switch
(2) Set multimeter select switch to ohms.
(3) Is there continuity between connector
MC189 terminal A and terminal B?
(a) If there is no continuity, replace
mode switch (Para 21-25).
(b) If there is continuity, mode
switch is OK.
(4) Connect mode switch connector
Sliders must be in the CHU position to
perform this test.