TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
16. MAIN FRAME, HOOK ARM, AND WINCH DO NOT OPERATE (continued).
VOLTAGE TEST
(1) Turn engine start switch to ON
position.
(2) Turn light control switch to STOP
LIGHT position
CAB CONTROL BOX
(3) Set multimeter to voltage position.
CONNECTOR (J2)
(4) Hold joystick in the UNLOAD
position.
(5) Place positive (+) probe of
multimeter on position A of cab
control box connector (J2).
(6) Place negative (-) probe of
multimeter on known good ground
and check multimeter for voltage
reading.
(7) Repeat Steps 5 through 7 with
joystick in the LOAD position.
(8) Turn engine start switch and light
control switch to OFF position.
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