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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
troubleshooting maintenance. If
necessary use insulated pads and gloves.
Hot engine components will burn and cause
personnel injury.
Use jumperwire only between terminals
indicated. Failure to comply may result
in damage to DDEC components or wiring.
DDEC ECM connector terminals are easily
damaged. Use care when connecting and
disconnecting connectors.
NOTE
The following steps should only be
used if troubleshooting was started
at DDEC II Troubleshooting (All
Conditions) and you were referred here.
DDR TEST
(1) Remove DDEC ECM (Para 7-56).
(2) Disconnect FTS.
(3) Place jumperwire between terminals
A and B at FTS harness connector.
(4) Set ECM on mounting bracket.
(5) Connect vehicle and engine harness
connectors to DDEC ECM and
tighten two screws.
(6) Connect power harness connector
and right and left injector
harness connectors to DDEC ECM.
(7) Connect DDR to DDL
connector MC13.
(8) Turn ON ENGINE switch
(TM 9-2320-364-10).
(9) Select MODE 01 (ACTIVE CODES)
on DDR.
(10) Is code 24 or any other codes
displayed on DDR?
(a) If any code except Code 24 is
displayed on DDR, turn OFF
ENGINE switch and go to Step 4
of this Fault.
(b) If code 24 or any other code is
displayed on DDR, go to Step 2
of this Fault.
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