3406B (PEEC) PROGRAMMABLE ELECTRONIC ENGINE CONTROLS Caterpillar

Entering Passwords

Usage:

Factory Passwords

Factory passwords are required to perform any one of these four functions:

1. Program a new ECM.

When an ECM is replaced, the System Configuration Parameters must be programmed into the new ECM. These parameters are protected by factory passwords.

2. Rerate the engine to another engine family.

This requires changing the Personality Module Code, which is protected by factory passwords.

3. Read customer passwords.

If the owner forgets his customer passwords, he will not be able to program customer parameters. Using factory passwords, one can read customer passwords, then use those customer passwords to program customer parameters.

4. Clear certain diagnostic codes.

Only Diagnostic Code 48 (Excessive Engine Power) requires factory passwords to clear once it is LOGGED. Clearing certain other codes require customer passwords. The majority of LOGGED diagnostic codes require no passwords to clear.

Factory passwords are controlled by Caterpillar, and may only be obtained by authorized Caterpillar Dealers.

NOTE: Since factory passwords contain alphabetic characters, only the ECAP may perform these functions.

To obtain factory passwords, proceed as if you already had the password. At some point, if factory passwords are truly needed, the ECAP will request factory passwords and will provide most of the information required to obtain the password on the ECAP screen.

Customer Passwords

Customer passwords are required to change ANY customer parameter. Customer Specified Parameters are those that affect cruise control, vehicle speed limits, progressive shifting, horsepower rating within a family, and PTO operation. See the previous section on "Customer Specified Parameters" for more detail on what parameters are customer programmable.

Either the ECAP or DDT may change Customer Parameters. However if a customer uses alphabetic characters in his password, only the ECAP can enter the customer passwords to change Customer Specified Parameters.

To obtain customer passwords, contact the owner of the vehicle. If the owner has forgotten his passwords, customer passwords may be read using an ECAP by following these steps:

1. If the customer has lost or forgotten his passwords, use the ECAP to access "Read/Change System Configuration Parameters", then "Read Customer Passwords".

2. When the Factory Passwords screen appears, record the information listed on the "PEEC Factory Worksheet" (in this section).

NOTE: Leave the ECAP on this screen.

3. Obtain the Factory Passwords. The information recorded above must be provided, and generates a permanent record at Caterpillar of the access.

4. From the Factory Passwords screen, enter the Factory Passwords.

5. When the "Read Customer Passwords" screen appears, record the Customer Passwords. The Customer Passwords may then be used to change Customer Parameters.

Programming New Electronic Control Modules

Be aware that replacing the ECM is somewhat time consuming, and that good ECMs are often replaced in a last ditch effort to fix a problem.

Use the proper procedure in this manual to find the real root cause of the problem. Be sure that you will really be fixing the customer's problem before replacing the ECM.

The following procedure is a summary of the basic steps necessary to program a replacement ECM.

Step 1:

Use the "PEEC Customer Specified Parameters Worksheet" (in this section), to record the customer parameters from the ECM being replaced.

A. Obtain and record the Customer Passwords. If the customer (owner) has lost or forgotten his passwords, go to "Customer Passwords" in this section.

B. Use the ECAP to access "Read Customer Specified Parameters" from the ECM being replaced.

C. Record the Customer Specified Parameters listed on the worksheet.

Step 2:

Replace the faulty ECM.

Step 3:

Use the "PEEC Factory Passwords Worksheet" (in this section), to obtain the factory passwords.

A. Record the following information from the engine information plate:

* Full Load Setting

* Full Torque Setting

* Engine Serial Number

B. Record the engine mileage from the vehicle odometer.

C. Connect the ECAP. When first powered up, the ECAP will display its serial number while going through its self tests. Read and record the ECAP Serial Number.

D. Use the ECAP to access "Read/Change System Configuration Parameters" from the new ECM.

E. When the Factory Specified Passwords screen appears, record the following information:

* ECM Serial Number

* Engine Serial Number (should read 0XX00000).

* Total Tattletales

NOTE: Leave the ECAP on this screen.

F. Obtain the Factory Passwords. The information recorded above must be provided.

Step 4:

Program the PEEC System Configuration Parameters

A. From the Factory Specified Passwords screen, enter the Factory Passwords.

B. When the "Read/Change System Configuration Parameters" screen appears, enter the Full Load Setting, Full Torque Setting And Engine Serial Number recorded on the worksheet. Program the Personality Module Code to 0 before leaving this screen.

Step 5:

Program the Customer Specified Parameters.

A. Use the ECAP to access "Read/Change Customer Specified Parameters".

B. Enter the Customer Specified Parameters recorded in Step 1 and the original Customer Passwords.

NOTE: If the Customer Specified Parameters are entered before the System Configuration Parameters, the Total Tattletales will change. It will then be necessary to obtain another set of Factory Passwords to access "Read/Change System Configuration Parameters".

Step 6:

Use the ECAP to access "Calibrate Sensors", and calibrate the boost sensor.

Programming New Personality Modules

When updating to a newer version of Personality Module of the same horsepower and emissions family, there is no need for factory passwords to change System Configuration Parameters. Customer passwords are also typically not needed (though may be needed if the new module introduces new features that involve additional customer parameters.