TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
9.
LHS ENGAGED INDICATOR LIGHT DOES NOT OPERATE (MODEL A ONLY)
(continued).
UPPER
BODY
CONTINUITY TEST
(1) Remove four screws and lockwashers
from cab control box.
(2) Remove six screws from cab control
box, and separate upper body from
base.
(3) Turn engine start switch to ON
position.
(4) Turn light control switch to STOP
LIGHT position.
CAUTION
When checking voltage, use cau-
tion not to short or ground the
terminal being checked. Failure
BASE
to comply with this caution may
result in damage to vehicle or test
equipment.
LHS
(5) Set multimeter to voltage position.
MODE SELECT
(6) Place positive (+) probe of multimeter
SWITCH
on the LHS MODE SELECT switch
terminal with the white wire.
(7) Place negative (-) probe of multimeter
on known good ground, and check
multimeter for voltage reading.
(8) Turn engine start switch and light
control switch to OFF position.
WHITE WIRE
4-163
Change 1
