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TM 9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E
FLASHCODE:
36
J1587 CODE:
P100 4 - OIL PRESSURE ClRCUlT FAILED LOW (LOW VOLTAGE)
STEP/SEQUENCE
36-8
Check for Open +5
Volt Line
Turn ignition off.
Disconnect the engine harness
connector at the ECM.
Install a jumper wire between
sockets A and C of the OPS
connector.
Read resistance between sockets
W1 and Y2 on the engine harness
connector.
36-9
Check for Short
Remove jumper wire.
d resistance between sockets
A and C of the OPS
connector.
36-10
Check for Short to
Battery +
Disconnect batteries (para 7-61).
Disconnect the vehicle harness
and B-way power harness
connectors at the ECM.
Read resistance between socket
P2 of the engine harness
connector and socket B3 of the
vehicle harness connector.
Also read resistance between
socket P2 on the engine harness
connector and the following
sockets on the 5-way power
harness connector: A and C.
RESULT
WHAT TO DO NEXT
Less than or
equal to 5 ohms.
Greater than
5 ohms or open.
Less than or
equal to 10,000 ohms.
Greater than
10,000 Ohms or open.
All readings are
greater than 10,000 ohms
or open.
Any reading is
less than or equal to
10,000 ohms.
Go to 36-9.
The engine +5 volt line (ckt
#416) is open. Repair open.
Then go to 36-30.
The engine +5 volt line (ckt
#416) is shorted to the return
line (ckt #452). Repair short.
Then go to 36-12.
Go to 36-12.
Go to 36-12.
A short exists between the
sockets where less than 10,000
ohms resistance was read.
Repair short and connect
batteries. Then go to 36-30.
H-187
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