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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.
DDR TEST
(1) Remove 22 screws, lockwashers,
washers and cab engine access
panel. Discard lockwashers.
(2) Disconnect OTS connector.
(3) Start engine and run until CEL comes
ON, eight minutes maximum.
(4) Select MODE 01 (ACTIVE CODES)
and read codes with engine still
running.
(a) If code 15 appears, turn OFF
ENGINE switch and go to Step 4
of this Fault.
(b) If any codes other than 15 appear,
turn OFF ENGINE switch and
go to Step 3 of this Fault.
VISUAL INSPECTION
(1) Check OTS terminals at OTS
connector (OTS and harness side) for
damage; bent, corroded and
unseated pins or terminals.
(a) If connectors are damaged, repair
connectors (Para 7-101).
(b) If connectors are free of damage,
replace OTS (Para 7-66).
(2) Connect OTS connector.
(3) Install cab engine access panel and
22 washers, lockwashers and screws.
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