STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE: 36
J1587 CODE: P100 4 - OIL PRESSURE 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 3-345.41 and you have now been referred here.
36-1 Multiple Code Check
Were there any other active
No other codes.
Go to 36-2.
codes besides Code 100/47
Yes, any or all
Go to ENG5V-1 (page 3-
of the following codes:
345.413).
110/3 or 4, 175/3 or 4,
174/3 or 4, 102/3 or 4,
100/3, 94/3 or 4,
101/3 or 4, 73/3 or 4.
Yes - but none
Go to 36-2.
of the above.
36-2 Sensor Check
Turn ignition off.
Code 100/3 (and
Check to be sure ECM and
Disconnect OPS connector and
any codes except
OPS connectors are wired
properly. If wired properly
install a jumper wire between
Code 100/4).
Then go to 36-3.
sockets B and C of the OPS
harness connector.
Code 100/4 (and any
Go to 36-4.
Turn ignition on.
other codes).
Read active codes.
If active Code 100/3 or 4 exists,
No codes.
Go to 36-4.
go to RESULT column.
If no active Code 100/3 or 4 exists,
start and run engine until either
active Code 100/3 or 4 appears of
the engine temperature
COOLANT TEMP or OIL TEMP
or DDR) has been greater than
60 degrees C (140 deg F)
for more than 1 minute.
36-3 Check OPS Connectors
Turn ignition off.
Inspect terminals at the OPS
Terminals and
Replace OPS. Then go to
connectors (sensor side and
connectors are okay.
36-30.
harness side) for damage; bent,
corroded, and unseated pins or
Problem found.
Repair terminals/connectors.
sockets.
Then go to 36-30.
Change 3 3-345.289
