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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).
4.
KNOWN INFO
TEST OPTIONS
WARNING
READ WARNING
Resistance test.
DDR OK.
on Page 2-169
STE/ICE-R #91.
No open in +12 volt line.
No open in DDR or data link
lines.
REASON FOR QUESTION
Are there more than 5 ohms
measured between terminals
POSSIBLE PROBLEMS
Resistance less than 5 ohms at
J and A, J and H, K and A and
DDL connector indicates short
K and H on DDL connector
Short in +12 volt line.
between data line and +12 volt
MC13?
Short in DDR or data link lines.
line wire 439 or ground
Short in +12 volt line.
wire 435.
DDEC ECM connector
damaged.
Repair wires 439, 435
and/or 900 (see
schematic Fig 2-1)
NO
or notify DS
Maintenance.
Verify repair, go to
Step 7 of this Fault.
YES
5.
KNOWN INFO
TEST OPTIONS
WARNING
READ WARNING
DDR OK.
Resistance test.
on Page 2-169
No open in +12 volt line.
STE/ICE-R #91.
No open in DDR or data link
Are there
lines.
REASON FOR QUESTION
less than
No short in +12 volt line.
5 ohms measured between
Reading greater than 5 ohms
wires 900 and 901 with
POSSIBLE PROBLEMS
at vehicle harness connector
jumperwire between terminals
indicates one or both data lines
J and K on DDL connector?
Short in DDR or data link lines.
wires 900 or 901 are open.
DDEC ECM connector
damaged.
Repair wires 900
and/or 901 (see
schematic Fig 2-1)
NO
or notify DS
Maintenance.
Verify repair, go to
Step 7 of this Fault.
YES
2-168
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