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 TM 9-2320-364-20-1
Allow engine to cool before performing trouble-
shooting maintenance. If necessary use
insulated pads and gloves. Hot engine
components will burn and cause injury to
personnel.
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry or tools contact
positive electrical circuits, a direct short
may result. Damage to equipment, injury or
death to personnel may occur
VOLTAGE TEST
(1) Connect positive (+) multimeter lead
to wire 439 on DDL connector MC13,
terminal H.
(2) Connect negative (- ) multimeter lead
-
to a known good ground.
(3) Turn ON ENGINE switch
(TM 9-2320-364-10).
(a) If 10 to 14 vdc are not present,
turn OFF ENGINE switch repair
wire 439 (see schematic Fig 2-1)
or notify DS Maintenance.
(b) If 10 to 14 vdc are present, wire
439 is OK.
(4) Turn OFF ENGINE switch.
RESISTANCE TEST
(1) Place jumperwire between terminals J
and K on DDL connector MC13.
(2) Loosen screw and disconnect vehicle
harness connector MC18 at DDEC
ECM.
(3) Read resistance between terminals
C1 and C2 of vehicle harness
connector MC18.
(a) If more than 5 ohms, repair wires
900 and/or 901 (see schematic
Fig 2-1) or notify DS Maintenance.
(b) If less than 5 ohms are present,
wires 900 and 901 are OK.
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