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TM 9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE: 23
J1587 CODE:
P174 3 - FUEL TEMPERATURE CIRCUIT FAILED HIGH (HIGH VOLTAGE)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
23-5
Check ECM Connectors
Check terminals at the
engine harness connector
(both the ECM and harness side)
for damage; bent, corroded, and
unseated pins or sockets.
23-30 Verify Repairs
Turn ignition off.
Reconnect all connectors.
Turn ignition on.
Clear codes.
Note status of "Check Engine"
light.
If "Check Engine" light does not
stay on, start engine and run
(TM 9-2320-360-10) until
"Check Engine" light comes on or
8 minutes. Stop engine.
Read inactive codes.
Terminals and
connectors are okay.
Problem found.
Replace ECM (para 7-29.1).
Then go to 23-30.
Repair terminals/connectors
(para 7-77). Then go to 23-30.
No codes.
Code 174/3 (and
any other codes).
Repairs are complete.
All system diagnostics are
complete. Please review this
section from the first step to find
the error.
Any other codes
except Code 174/3.
Go to START-1, pg H-25, to
service other codes.
H-155
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