P100 4 - OIL PRESSURE CIRCUIT FAILED LOW (LOW VOLTAGE)

TM 9-2320-364-20-1

2-14. DDEC III/IV TROUBLESHOOTING (CONT).

Section IV. TROUBLESHOOTING CHARTS (Cont.)

E. FLASH CODE:

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/IV was started at step START-1, pg 2-539, and you have now been referred here.

STEP/SEQUENCE

RESULT

WHAT TO DO NEXT

36-1

Multiple Code Check

Were there any other active

No other codes.

Go to 36-2.

codes besides Code 100/4?

Yes, any or all

Go to ENG5V-1 (page 2-761).

of the following codes:

110/3 or 4, 175/3 or 4,

174/3 or 4, 102/3 or 4,

100/3, 187/4, 91/4.

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 OPS

Disconnect OPS connector

any codes except

connectors are wired properly.

(para 7-68) and install a jumper

Code 100/4).

If wired properly then go to 36-3.

wire between sockets B and C

of the OPS 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

(TM 9-2320-364-10) until either

active Code 100/3 or 4 appears

or the COOLANT TEMP or

OIL TEMP on the 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 (para 7-68).

connectors (sensor side and

connectors are okay.

Then go to 36-30.

harness side) for damage; bent,

corroded, and unseated pins or

Problem found.

Repair terminals/connectors

sockets.

(para 7-101). Then go to 36-30.

2-687