Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Install two-way radio inline fuse (WP 0430). Disconnect two-way radio connector from
two-way radio (WP 0430). Turn battery disconnect switch to ON position (WP 0007).
Turn vehicle ENGINE switch to ON position (TM 9-2320-347-10). Check for 10 to 14
VDC between two-way radio power wire (red) connector and a known good ground.
If 10 to 14 VDC are not present, go to Step 8.
Turn battery disconnect switch to OFF position (WP 0007). Check for continuity across
two-way radio ground wire (black) from radio connector to a known good ground.
If there is continuity, replace two-way radio (WP 0430).
If there is no continuity, repair two-way radio ground wire if
repairable (TM 9-2320-325-14&P), or replace two-way
radio (WP 0430).