Test Step 2. Check for Diagnostic Codes

235

TM 9-2320-312-24-2

Troubleshooting Section

+Battery (terminals 52 and 53)

Results:

-Battery (terminals 65 and 67)

Result 1 Proceed to Test Step 3.

ATA data link (terminals 8 and 9)

Result 2 Proceed to Test Step 4.

Result 3 Proceed to Test Step 5.

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

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

Result 4 Proceed to Test Step 6.

D. Check the harness and wiring for abrasion and

Test Step 3. Use ET To Check The Part

pinch points from the data link connectors back

Number Of The ECM Personality Module.

to the ECM.

Expected Result:

A. Connect ET at the cab data link connector.

All connectors, pins and sockets should be

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

completely coupled and/or inserted and the harness

and wiring should be free of corrosion, abrasion

C. Read the Customer Specified Parameters. Refer

or pinch points.

to Troubleshooting, "Programming Parameters".

Results:

D. Ensure that the Personality Module Part Number

agrees with the original engine arrangement.

OK Proceed to Test Step 2.

Expected Result:

Not OK

The correct Personality Module is installed in the

Repair: Repair the connectors or wiring and/or

ECM for the engine.

replace the connectors or wiring. Ensure that all

of the seals are properly in place and ensure that

Results:

the connectors are completely coupled.

Yes

Verify that the repair eliminates the problem.

Repair: The diagnostic code 252-11 must be

STOP.

cleared if the correct Personality Module has

been installed. Clearing this diagnostic code

Test Step 2. Check for Diagnostic Codes.

requires Factory Passwords and resetting the

Personality Module Code to zero.

Connect ET and check for diagnostic codes.

STOP.

Expected Result:

Result 1 The following diagnostic code requires

troubleshooting:

Repair: Reprogram the ECM with the correct

Personality Module. Refer to Troubleshooting,

252-11 Incorrect Engine Software (59)

"Flash Programming".

Result 2 The following diagnostic code requires

Verify that the repair eliminates the problem.

troubleshooting:

STOP.

253-02 Check Customer or System Parameters

Test Step 4. Use ET to Determine

(56)

Parameters that Require Programming.

Result 3 Scrambled parameters or data require

troubleshooting.

A. Connect ET at the cab data link connector.

Result 4 The following diagnostic code requires

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

troubleshooting:

C. Check the active diagnostic codes. Note any

253-14 Truck Manufacturer Programmed Not

parameters that are listed in the following active

Programmed (6)

diagnostic code:

253-02 Check Customer or System Parameters

(56)