P174 4 - FUEL TEMPERATURE CIRCUIT FAILED LOW (LOW VOLTAGE) (cont)

TM 9-2320-364-20-1

Section IV. TROUBLESHOOTING CHARTS (Cont.)

E. FLASH CODE:

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