Test Step 3. Inspect Electrical Connectors and Wiring -807640488

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

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.