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TM 9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
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
engine harness connector
(both the ECM and harness side)
for damage; bent, corroded, and
unseated pins or sockets.
Especially R3 and Y2 of the engine
harness connector.
Replace ECM (para 7-29.1).
Then go to 24-30.
Repair terminals/connectors
(para 7-77). Then go to 24-30.
24-30 Verity Repairs
Turn ignition off.
Reconnect all connectors.
Turn ignition on.
Clear codes.
Note status of "Check Engine"
light.
No codes.
Code 174/4 (and
any other codes).
Repairs are complete.
AlI system diagnostics are
complete. Please review this
section from the start to find
the error.
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.
Any other codes
except Code 174/4.
Go to START-1, pg H-25, to
service other codes.
H-159
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