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Page Title:
P100 4 - OIL PRESSURE CIRCUIT FAILED LOW (LOW VOLTAGE) (cont) |
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 TM 9-2320-364-20-1
Section IV. TROUBLESHOOTING CHARTS (Cont.)
E. FLASH CODE:
36
J1587 CODE:
P100 4 - OIL PRESSURE CIRCUIT FAILED LOW (LOW VOLTAGE)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
36-4
Check for +5 Volts
Turn ignition off.
Between 4 to
Go to 36-5.
Remove jumper wire.
6 volts.
Turn ignition on.
Read voltage on OPS
Less than
Go to 36-8.
connector, socket C (red lead) to
4 volts.
socket A (black lead).
Greater than
Go to 36-10.
6 volts.
36-5
Check for Signal Open
Turn ignition off.
Less than or
Go to 36-11.
Disconnect the engine harness
equal to 5 ohms on either
connector at the ECM.
reading.
Install a jumper wire between
sockets A and B of the OPS
Greater than
Signal line (ckt #530) is open.
connector.
5 ohms or open.
Repair open. Then go to 36-30.
Read resistance between sockets
P2 and Y2 on the engine harness
connectors.
36-6
Check for Short
Remove jumper wire.
Less than or
Signal line (ckt #530) is shorted
Disconnect the engine harness
equal to 10,000 ohms.
to the return line (ckt #452) or
connector at the ECM.
battery ground. Repair short.
Read resistance between sockets
Then go to 36-30.
A and B on the OPS
connector.
Greater than
Go to 36-12.
Also read resistance between
10,000 ohms or open.
socket B and a good ground.
on both readings.
36-7
Check ECM Connectors
Check terminals at the engine
Terminals and
Replace ECM (para 7-57).
harness connector (both the ECM
connectors are okay.
Then go to 36-30.
and harness side) for damage;
bent, corroded and unseated pins
Problem found.
Repair terminals/connectors
or sockets. Especially W1, P2,
(para 7-101). Then go to 36-30.
and Y2 terminals and pins at ECM.
2-689
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