TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
9.
LHS ENGAGED INDICATOR LIGHT DOES NOT OPERATE (MODEL A ONLY)
(continued).
VOLTAGE TEST
(1) Turn engine start switch to ON
position.
(2) Turn light control switch to
STOP LIGHT position and LHS
MODE SELECT switch to
position 1 (AUTO).
BULB
(3) Set multimeter to voltage
SOCKET
position.
CAUTION
Do not allow the test probe
CENTER
to contact the side of the
TERMINAL
bulb socket, as this would
complete the circuit. Fail-
ure to comply with this cau-
tion will result in damage to
the socket or test equipment.
(4) Place positive (+) probe of
multimeter on terminal in center
of indicator bulb socket.
(5) Place negative (-) probe of
multimeter on known good
ground, and check multimeter
for voltage reading.
(6) Turn engine start switch and
light control switch to OFF
position.
Change 1
4-157
