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Page Title:
ENGINE HARNESS +5 VOLT SUPPLY (CONT). |
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 TM 9-2320-364-20-1
A5B ENGINE HARNESS +5 VOLT SUPPLY (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
Voltage test.
on Page 2-403
comes ON and stay ON.
STE/ICE-R #89.
ECM supply voltage OK.
REASON FOR QUESTION
Are 4.7 to 5.2 vdc measured
POSSIBLE PROBLEMS
between wires 452 and 472 at
Readings between 4.7 and 5.2
vdc are acceptable.
FTS and TBS harness
4.7 to 5.2 vdc not supplied to
connectors, terminals A
FTS or TBS.
and B?
4.7 to 5.2 vdc not supplied to
OPS or OTS.
Damaged DDEC ECM and
engine harness connector.
If there are less than
Open in engine +5 volt line.
4.7 vdc, go to Step 5
Short in engine +5 volt line.
of this Fault.
Short to battery positive.
NO
If there are more than
5.2 vdc, go to Step 7
of this Fault.
YES
2-402
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