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Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
35
J1587 CODE:
P100 3 - OIL PRESSURE CIRCUIT FAILED HIGH (HIGH VOLTAGE)
TM 9-2320-360-20-3
STEP/SEQUENCE
35-4
Check OPS Connectors
Inspect terminals at the OPS
connectors (both the sensor and
harness side) for damage; bent,
corroded, and unseated pins or
sockets.
35-5
Check for Short
Turn ignition off.
Disconnect the engine harness
connector at the ECM.
Read resistance between sockets
W1 and P2 on the engine harness
connector.
35-6
Check for Short to
Battery +
Disconnect batteries (para 7-61).
Disconnect the vehicle harness
and 5-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
Terminals and
connectors are okay.
Problem found.
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.
WHAT TO DO NEXT
Replace OPS (para 7-35.1).
Then go to 35-30.
Repair terminals/connectors
(para 7-77). Then go to 35-30.
Signal line (ckt #530) is shorted
to the engine +5 volt line (ckt
#416). Repair short. Then go to
35-30.
Go to 35-6.
Go to 35-6.
A short exists between the
sockets where less than 10,000
ohms resistance was read.
Repair short and connect
batteries. Then go to
35-30.
H-179
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