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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
15
J1587 CODE:
P110 4 - COOLANT TEMPERATURE CIRCUIT FAILED LOW (LOW VOLTAGE)
OR:
P175 4 - OIL TEMPERATURE CIRCUIT FAILED LOW (LOW VOLTAGE)
NOTE - This chart is only to be used if:
1) All basic mechanical checks and physical inspections have been performed with no problem found, and
2) Diagnosis of DDEC-III was started at step START-1, pg H-25 and you have now been referred here.
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
15-1
Code Check
l Turn ignition on.
l Plug in DDR and determine which
code is present.
PID 110-FMI 4
Go to 15-2.
PID 175-FMI 4
Go to 15-3.
NOTE: If any of the following SAE J1587 Codes are also present go to ENG5V-1 (page H-241):
110/3, 174/3, 174/4, 187/4, 91/4, 100/4, 102/4,
and 102/3
15-2
Coolant Temp Sensor
Check
l Turn ignition off.
l Disconnect CTS connector.
l Start engine and run until “Check
Engine” light comes on or after
8 minutes.
l Read active codes with engine
still running.
15-3
Oil Temp Sensor
Check
l Turn ignition off.
l Disconnect OTS connector.
l Start engine and run
(TM 9-2320-360-10) until
“Check Engine” light comes on or
after 8 minutes.
l Read active codes with engine still
running.
15-4
Check CTS
Connectors
l Inspect terminals at the CTS
connector (both the sensor
and harness side) for damage;
bent, corroded, and unseated
pins or sockets.
except Code 110/4.
Go to 15-4.
any other codes).
Go to 15-6.
Replace CTS (para 7-36.1).
Then go to 15-30.
Problem found.
Repair terminals/connectors
(para 7-77). Then go to 15-30.
H-127
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