TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
4.
MAIN FRAME WORKLIGHT DOES NOT OPERATE (MODEL B ONLY) (continued).
VOLTAGE TEST
(1) Remove three thumb screws and
access cover on right side of vehicle
under front fender to gain access to
cab interrface wiring harness
connector.
(2) Cut and remove wire ties as necessary
to loosen harness and disconnect
male from female end.
(3) Turn engine start switch to ON
position.
(4) Set multimeter to voltage position.
(5) Place negative (-) probe of multimeter
on known good ground.
(6) Place cab worklight switch in "ON"
position.
(7) Place positive (+) probe of multimeter
on position "2", circuit 1473, of cab
POSITION 6
control box connector (J2), note
J2
reading.
(8) Place positive (+) probe of multimeter
on position "6", circuit 1040, of cab
control box connector (J2), note
reading.
(9)Turn worklight switch and engine start
switch to "OFF" position.
POSITION 2
Change 1
4-4-93
94.7
