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Page Title:
CRANE HIGH IDLE NOT WORKING (CONT). |
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 TM 9-2320-364-20-1
D4 CRANE HIGH IDLE NOT WORKING (CONT).
8.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Resistance test.
Para 2-29, Fault 19
on Page 2-467
STE/ICE-R #92.
Are there
Troubleshooting completed.
more than
Throttle position sensor OK.
REASON FOR QUESTION
DDEC ECM is reading vernier
10,000 ohms or an open
control.
circuit measured between
Resistance less than 10,000
DDEC ECM terminals and
wires 916 and 952 at vehicle
ohms at vehicle harness
connectors OK.
harness connector MC18,
connector indicates short in wire
DDEC ECM OK.
terminals A3 and C3?
916 (+5 volt line).
No open in signal and ground
wires 510/1525 and 952.
No open in +5 volt wire 916.
No short in signal and ground
Repair wires 916 or
wires 510/1525 and 952.
952 (see schematic
Fig 2-1)
POSSIBLE PROBLEMS
or notify DS
NO
Maintenance.
Short in +5 volt wire 916.
Verify repair, go to
Damaged vernier control
Step 11 of this Fault.
terminals or connectors.
Vernier control faulty.
YES
9.
KNOWN INFO
TEST OPTIONS
Para 2-29, Fault 19
Visual inspection.
Are vernier control terminals
Troubleshooting completed.
and connectors (sensor side
Throttle position sensor OK.
REASON FOR QUESTION
and harness side) free from
DDEC ECM is reading vernier
damage?
control.
Damaged terminals or
DDEC ECM terminals and
connectors can affect signal to
connectors OK.
vernier control.
DDEC ECM OK.
No open in signal and ground
wires 510/1525 and 952.
No open in +5 volt wire 916.
No short in signal and ground
wires 510/1525 and 952.
No short in +5 volt wire 916.
Repair connectors
(Para 7-101).
NO
POSSIBLE PROBLEMS
Verify repair, go to
Step 11 of this Fault.
Damaged vernier control
terminals or connectors.
Vernier control faulty.
YES
2-466
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