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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.
DDEC ECM connector terminals are easily
damaged. Use care when connecting and
disconnecting connectors.
VISUAL INSPECTION
Turn ON ENGINE switch
(TM 9-2320-364-10).
(1) If CEL comes on and stays on,
turn OFF ENGINE switch and
repair wire 419 (see schematic Fig
2-1) or notify DS Maintenance.
(2) If CEL does not come on, turn
OFF ENGINE switch and go to
Step 4 of this Fault.
VISUAL INSPECTION
(1) Check terminals at vehicle harness
connector MC18 (DDEC ECM and
harness side) for damage; bent,
corroded and unseated pins or
terminals.
(a) If harness connector is damaged,
repair connector (Para 7-101) and
perform Steps (2) and (3) below.
(b) If DDEC ECM connector is
damaged, replace DDEC ECM
(Para 7-56).
(c) If DDEC harness and ECM
connectors are OK, replace DDEC
ECM (Para 7-56).
(2) Connect vehicle harness connector
MC18 and tighten screw.
(3) Close top engine access cover.
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