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Page Title: P174 4 - FUEL TEMPERATURE CIRCUIT FAILED LOW (LOW VOLTAGE) (cont)
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TM 9-2320-364-20-1
Section IV. TROUBLESHOOTING CHARTS (Cont.)
E. FLASH CODE:
24
J1587 CODE:
P174 4 - FUEL TEMPERATURE CIRCUIT FAILED LOW (LOW VOLTAGE)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
24-5
Check ECM Connectors
Check terminals at the
Terminals and
Replace ECM (para 7-57).
engine harness connector
connectors are okay.
Then go to 24-30.
(both the ECM and harness side)
for damage; bent, corroded, and
Problem found.
Repair terminals/connectors
unseated pins or sockets.
(para 7-101). Then go to 24-30.
Especially R3 and Y2 of the
engine harness connector.
24-30
Verify Repairs
Turn ignition off.
No codes.
Repairs are complete.
Reconnect all connectors.
Turn ignition on.
Code 174/4 (and
All system diagnostics are
Clear codes.
any other codes).
complete. Please review this
Note status of "Check Engine"
section from the start to find
light.
the error.
If "Check Engine" light does not
stay on, start engine and run
Any other codes
Go to START-1, pg 2-539, to
(TM 9-2320-364-10) until
except Code 174/4.
service other codes.
"Check Engine" light comes on
or for 8 minutes. Stop engine.
Read inactive codes.
2-663

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