TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
9.
LHS ENGAGED INDICATOR LIGHT DOES NOT OPERATE (MODEL A ONLY)
(continued).
CONTINUITY TEST
(1) Remove four screws and
lockwashers, and access cover from
heater compartment.
ACCESS
(2) Remove supply harness connector
COVER
(P1) from cab control box.
(3) Turn engine start switch to ON
position.
(4) Turn light control switch to STOP
LIGHT position.
(5) Set multimeter to voltage position.
(6) Place positive (+) probe of
multimeter on supply harness
CAB
connector (P1), position A.
CONTROL
(7) Place negative (-) probe of
BOX
multimeter on known good ground,
and check multimeter for voltage
reading.
(8) Turn engine start switch and light
control switch to OFF position.
SUPPLY HARNESS
CONNECTOR (P1)
4-161
Change 1
