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 TM 9-2320-364-20-1
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.
Allow engine to cool before performing trouble-
shooting maintenance. If necessary use
insulated pads and gloves. Hot engine
components will burn and cause
personnel injury.
DDEC ECM connector terminals are easily
damaged. Use care when connecting and
disconnecting connectors.
DDR TEST
(1)
Remove DDEC ECM (Para 7-56).
(2)
Disconnect FTS.
(3)
Set DDEC ECM on mounting bracket.
(4)
Connect vehicle and engine harness
connectors to DDEC ECM and tighten
two screws.
(5) Connect power harness connector
and right and left injector connectors
to DDEC ECM.
(6) Start engine and run until CHECK
ENGINE LIGHT (CEL) comes ON or
for eight minutes.
(7) Select MODE 01 (ACTIVE CODES)
on DDR.
(a) If code 24 is the only code that
appears on DDR, turn OFF
ENGINE switch and go to Step 4
of this Fault.
(b) If any other codes except code 24
appear on DDR, turn OFF
ENGINE switch and go to Step 3
of this Fault.
VISUAL INSPECTION
(1) Disconnect FTS harness connector.
(2) Inspect FTS connectors (sensor side
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 FTS (Para 7-62).
(3) Connect FTS harness connector.
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