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Page Title:
DDR DISPLAY IS BLANK OR RANDOM (CONT). |
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 TM 9-2320-364-20-1
A3 DDR DISPLAY IS BLANK OR RANDOM (CONT).
6.
KNOWN INFO
TEST OPTIONS
WARNING
READ WARNING
DDR OK.
Visual inspection.
on Page 2-171
No open in +12 volt line.
No open in DDR or data link
REASON FOR QUESTION
lines.
Are DDEC ECM terminals and
No short in DDR or data link
Damage to terminals and
lines.
connectors (DDEC ECM and
connector can affect signal to
No short in +12 volt line.
harness side) free from
DDEC ECM.
damage?
POSSIBLE PROBLEMS
DDEC ECM connectors
damaged.
Repair DDEC ECM
terminals (Para 7-56).
NO
Verify repair, go to
Step 7 of this Fault.
YES
Replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 7 of this Fault.
7.
KNOWN INFO
TEST OPTIONS
DDR OK.
Verify repair.
Is DDR display still blank or
No open in +12 volt line.
random?
No open in DDR or data link
REASON FOR QUESTION
lines.
No short in DDR or data link
If CEL lights for approximately
lines.
five seconds and then goes
DDEC ECM connectors OK.
OUT after ENGINE switch is
turned to ON, Fault has been
corrected.
POSSIBLE PROBLEMS
Fault corrected.
NO
YES
Go to Fault Index
2-170
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