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TM 9-2320-360-20-1
CAUTION
Use jumper wire only between terminals
Indicated. Failure to comply may result in
damage to DDEC components or wiring.
NOTE
·
The following chart should be used
only if DDEC troubleshooting was
started on pg. 2-80 and you were
referred here.
·
A false DDEC historical Code 23 may
be
logged
during
cold
starts
in
extremely cold environments, -50 to -
26° F (-46 to -32° C). Typically, the
CHECK ENGINE light will come on 8
minutes after starting and go out 2-3
minutes later. If the vehicle has been
operated under these conditions, clear
the historical codes and return the
vehicle to service.
(1)
Turn ENGINE switch OFF.
(2)
Disconnect FTS and install jumper
between FTS and connector
sockets A and B.
(2.1) Click on “Alarms Clear" to clear
alarms screen.
(3)
Turn ENGINE switch ON and read
active codes.
CONTINUITY TEST
(1)
Turn ENGINE switch OFF and
remove jumper wire.
(2)
Disconnect engine harness
connector at ECM.
(3)
Read resistance between
sockets R3 and W1 on engine
harness connector.
Inspect
FTS
and
terminals
at
FTS
connectors (both sensor and harness side)
for damage; bent, corroded, and unseated
pins or sockets.
Change 2 2-159
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