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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
36-8
Check for Open +5
Volt Line
Turn ignition off.
Less than or
Go to 36-9.
Disconnect the engine harness
equal to 5 ohms.
connector at the ECM.
Install a jumper wire between
Greater than
The engine +5 volt line (ckt
sockets A and C of the OPS
5 ohms or open.
#416) is open. Repair open.
connector.
Then go to 36-30.
Read resistance between sockets
W1 and Y2 on the engine harness
connector.
36-9
Check for Short
Remove jumper wire.
Less than or
The engine +5 volt line (ckt
Read resistance between sockets
equal to 10,000 ohms.
#416) is shorted to the return
A and C of the OPS
line (ckt #452). Repair short.
connector.
Then go to 36-12.
Greater than
Go to 36-12.
10,000 ohms or open.
36-10
Check for Short to
Battery +
Disconnect batteries (para 7-87).
All readings are
Go to 36-12.
Disconnect the vehicle harness
greater than 10,000 ohms
and 5-way power harness
or open.
connectors at the ECM.
Read resistance between socket
Any reading is
A short exists between the
P2 of the engine harness
less than or equal to
sockets where less than 10,000
connector and socket B3 of the
10,000 ohms.
ohms resistance was read.
vehicle harness connector.
Repair short and connect
Also read resistance between
batteries. Then go to 36-30.
socket P2 on the engine harness
connector and the following
sockets on the 5-way power
harness connector: A and C.
2-691
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