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 TM 9-2320-366-20-1
CONTINUITY TEST
(1) Remove instrument panel assembly
for access (para 7-15).
(2) Disconnect connector PX15 from main
light switch.
(3) Set multimeter to ohms.
(4) Connect positive (+) probe of multimeter
to main light switch pin K.
(5) Connect negative (-) probe of multimeter
to main light switch pin C.
(6) Position main light switch to STOPLIGHT
(TM 9-2320-366-10-1) and note reading
on multimeter.
(7) If continuity is not present, replace main
light switch (para 7-17).
(8) Position main light switch to OFF
(TM 9-2320-366-10-1).
(9) Connect connector PX15 to main light
switch.
WARNING
Remove rings, bracelets, watches, necklaces,
and any other jewelry before working around
vehicle. Jewelry can catch on equipment and
cause injury or short across electrical circuits
and cause severe burns or electrical shock.
VOLTAGE TEST
(1)
Remove PDP cover (para 16-2).
(2)
Remove diode D1A from PDP.
(3)
Set multimeter to volts DC.
(4)
Connect positive (+) probe of multimeter
to PDP, terminal 2, where diode D1A was
removed.
(5) Connect negative (-) probe of multimeter
to ground.
(6) Position master power switch to on
(TM 9-2320-366-10-1).
(7) Position main light switch to STOPLIGHT
(TM 9-2320-366-10-1).
(8) Apply brakes and note reading on
multimeter.
(9) If 12 VDC is not present, repair wire 22
from diode D1A terminal 2 to connector
PX15 socket C (para 2-45) or replace
WTEC II dashboard cable assembly
(para 7-10) or WTEC III dashboard
cable assembly (para 7-11).
(10) Position main light switch to OFF
(TM 9-2320-366-10-1).
(11) Position master power switch to off
(TM 9-2320-366-10-1).
Change 1
2-753
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