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310
TM 9-2320-312-24-2
Troubleshooting Section
Verify that the repair eliminates the problem.
Expected Result:
The engine starts.
STOP.
Test Step 4. Check the Sensor Status
Results:
with the Engine Off.
Yes Proceed to Test Step 3.
A. Connect the electronic service tool to the cab
No
data link connector.
Repair: Reconnect the electrical connector
B. Turn the ignition key switch to the ON position.
J204/P204 for the injection actuation pressure
sensor to the engine harness. Refer to
C. Check the injection actuation pressure on the
Troubleshooting, "Engine Cranks but Will Not
electronic service tool status screen.
Start".
Note: The following codes will cause the injection
STOP.
actuation pressure sensor to default to 17500 kPa
(2538 psi).
Test Step 3. Inspect Electrical Connectors
and Wiring.
164-03 Injection Actuation Pr Open Circuit (15)
A. Thoroughly inspect the connector J204/P204
164-04 Injection Actuation Pr Sensor Short
for the injection actuation pressure sensor and
Circuit (15)
inspect the ECM engine harness connector
J2/P2. Refer to Troubleshooting, "Electrical
232-03 5 Volt Supply Above Normal (21)
Connectors-Inspect" for details.
232-04 5 Volt Supply Below Normal (21)
B. Perform a 45 N (10 lb) pull test on each of the
wires in the ECM connector that are associated
Expected Result:
with the injection actuation pressure sensor
(terminals 61 and terminal 62).
The injection actuation pressure sensor indicates
0 kPa (0 psi).
C. Check the ECM connector (allen head screw) for
the proper torque of 6.0 Nm (55 lb in).
Results:
D. Check the harness and wiring for abrasion and
Yes Proceed to Test Step 6.
for pinch points from the sensors back to the
ECM.
No Proceed to Test Step 5.
Test Step 5. Check the Voltage Supply of
Expected Result:
the Injection Actuation Pressure Sensor.
All connectors, pins and sockets should be
completely coupled and/or inserted and the harness
A. Turn the ignition key switch to the OFF position.
and wiring should be free of corrosion, abrasion
or pinch points.
B. Disconnect the electrical connector J204/P204
for the injection actuation pressure sensor from
Results:
the engine harness.
OK Proceed to Test Step 4.
C. Connect a 3-Terminal breakout T to the electrical
connector J204 only.
Not OK
D. Turn the ignition key switch to the ON position.
Repair: Perform the following repair:
E. Use a digital multimeter that is set on DC voltage.
Repair the connectors or wiring and/or replace
Measure the voltage supply from terminal A to
the connectors or wiring. Ensure that all of the
Terminal B at the breakout T.
seals are properly in place and ensure that the
connectors are completely coupled.
Expected Result:
The voltage reading should be between 4.5 to 5.5
VDC.

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