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Page Title:
CODE 24 FUEL TEMPERATURE SENSOR (FTS) SIGNAL VOLTAGE LOW (CONT). |
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 TM 9-2320-364-20-1
A4 CODE 24 FUEL TEMPERATURE SENSOR (FTS) SIGNAL VOLTAGE LOW (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
Resistance test.
on Page 2-257
comes ON and stays ON.
STE/ICE-R #92.
Are there
FTS connector OK.
more than
FTS OK.
REASON FOR QUESTION
10,000 ohms or an open
circuit measured between
POSSIBLE PROBLEMS
Resistance less than or equal to
wires 472 and 452 at engine
10,000 ohms at engine harness
Wires 472, 150 and/or 452
harness connector, terminals
connector or FTS connector
shorted.
indicates signal line wire 472 is
R3 and Y2?
DDEC ECM connector faulty.
shorted to return line wire 452 or
DDEC ECM faulty.
ground.
Repair wires 472
and/or 452 (see
schematic Fig 2-2) or
NO
notify DS
Maintenance.
Verify repair, go to
Step 6 of this Fault.
YES
5.
KNOWN INFO
TEST OPTIONS
CAUTION
Read CAUTION
CHECK ENGINE light (CEL)
Visual inspection.
on Page 2-257
comes ON and stays ON.
FTS connector OK.
REASON FOR QUESTION
FTS OK.
Are DDEC ECM terminals and
Wires 472, 150 and 452
Damage to terminals and
not shorted.
connectors (DDEC ECM and
connectors can affect signal to
vehicle harness side) free
DDEC ECM.
POSSIBLE PROBLEMS
from damage?
DDEC ECM connector faulty.
DDEC ECM faulty.
Repair DDEC ECM
connectors
(Para 7-101) or
NO
replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 6 of this Fault.
YES
Replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 6 of this Fault.
2-256
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