Test Step 3. Inspect Electrical Connectors and Wiring -807640425

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TM 9-2320-312-24-2

Troubleshooting Section

Test Step 3. Inspect Electrical Connectors

and Wiring.

g00741955

Illustration 84

Terminal locations for ECM

Results:

A. Thoroughly inspect ECM engine harness

connector J2/P2, boost pressure sensor

OK Proceed to Test Step 4.

J200/P200, engine oil pressure sensor

J201/P201, injection actuation pressure sensor

Not OK

J204/P204, and atmospheric pressure sensor

J203/P203. Refer to Troubleshooting, "Electrical

Connectors - Inspect" for details.

Repair: Repair the connectors or wiring and/or

replace the connectors or wiring. Ensure that all

B. Perform a 45 N (10 lb) pull test on each of the

of the seals are properly in place and ensure that

wires in the ECM Connector and the sensor

the connectors are completely coupled.

connectors that are associated with the active

diagnostic code.

Verify that the repair eliminates the problem.

Refer to Illustration 84.

Clear all Logged diagnostic codes.

C. Check the ECM connector (allen head screw) for

STOP.

the proper torque of 6.0 Nm (55 lb in).

Test Step 4. Verify that the Diagnostic

Code is Still Active.

D. Check the harness and wiring for abrasion and

pinch points from the sensors back to the ECM.

A. Turn the ignition key switch to the ON position.

Expected Result:

Wait at least 15 seconds for activation of the

diagnostic codes.

All connectors, pins and sockets should be

completely coupled and/or inserted and the harness

B. Monitor the" Active Diagnostic Code" screen of

and wiring should be free of corrosion, abrasion

ET. Check and record active diagnostic codes.

or pinch points.

C. Determine if the problem is related to an

open circuit diagnostic code or a short circuit

diagnostic code.