3176B, C-10, C-12 & 3406E TRUCK ENGINES Caterpillar

Operation of the engine following programming of the Personality Module is identical to operation following replacement of the Personality Module chip. The only difference is the software was already programmed in the chip for you when you replaced the chip, now you are actually performing the programming function.

For example, if you are rerating an engine, you will still need Factory Passwords to change the Personality Module Code.

NOTE: Data in existing histograms should be recorded prior to performing flash programming. Flash programming may cause the histogram data to appear scrambled when viewed. After flash programming is complete reset the histogram information before releasing the vehicle.

1. Connect hardware as shown below.

2. Start the LEXT3037 PC Program, or Flash from Electronic Technician (ET).

3. Select the engine Personality Module part number to be programmed into the ECM, and proceed with programming the Personality Module. The new ECM is shipped with a blank Personality Module.

4. PC Program Personality Module Messages and Their Meaning are discussed below.

NOTE: A new ECM comes with a blank (previously unprogrammed) personality module. A blank personality module will prompt you for all three of the following messages. The information contained in the "ECM Status" will be scrambled and meaningless if the module has not been previously programmed (this is normal).

- Message - "The engine ID in the flash file does not match the engine ID in the ECM."

- Meaning - The ECM has a personality module in it for a different engine, for example, the ECM has a 3406E personality module in it, and you are attempting to program a 3176B personality module into it.

- What you should do - Stop the transfer and access information about "ECM Status" under the "Electronic Control Module" menu. Make sure the file you are about to transfer is for the same engine it will be installed in.

- Message - "The application ID in the flash file does not match the application ID in the ECM."

- Meaning - The ECM has a personality module in it for a different application, for example, the ECM has a 3176B On-Highway Truck personality module in it, and you are attempting to program a 3176B Challenger personality module into it.

- What you should do - Stop the transfer and access information about "ECM Status" under the "Electronic Control Module" menu. Make sure the file you are about to transfer is for the On-Highway Truck application.

- Message - "The ECM ID in the flash file does not match the ECM ID in the ECM."

- Meaning - The ECM is not for use in the 3176B, C-10, C-12, and 3406E On-Highway truck application.

- What you should do - Stop the transfer and access information about "ECM Status" under the "Electronic Control Module" menu. Make sure the ECM on the engine is for a 3176B, C-10, C-12, and 3406E On-Highway truck application.

NOTE: If you access the "ECM Status" under the "Electronic Control Module" menu of the PC Program, but do not follow this information access by programming the Personality Module, you must turn the vehicle ignition key switch to the OFF position, and then to the ON position before using an ECAP or ET. If you do not cycle the key switch after reading the "ECM Status", the ECM will not communicate with your service tool, or start the engine. Cycling the key switch is not necessary following successful programming of a personality module using the Flash Designer Program.

5. Start the engine and check for proper operation.

- Program any parameters not previously in the old personality module if 253-02 Check Customer Or System Parameters (56) code is active. Read the code from the Active Diagnostic code screen of the ECAP or ET to determine the parameter(s) requiring programming.

- Remember, on initial power up of a new ECM, five parameters (six for a 3406E) must be programmed to avoid a 253-02 Check Customer Or System Parameters (56) code. They are Full Load Setting (FLS), Full Torque Setting (FTS), Vehicle Speed Calibration (ppm), Rating Number and Engine Serial Number (and Injector Codes, 3406E only).

NOTE: If the ECM serial number does not end in "CG" or "CJ" and the ECM is flash programmed with a NOV95 Personality Module the Total Tattletale may change by a random value when a Customer Specified Parameter value is programmed. To correct this problem upgrade to AUG96 or later Personality Module.

6. Clear / reset trip data.

- Flash programming may cause the trip data to appear scrambled when viewed. After flash programming is complete reset the trip data before releasing the vehicle.