HARNESS AS-TRANSMISSION 2549245 - Caterpillar

Factory Passwords
Factory passwords are required to perform each of the following 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 Engine to Another Engine Family This requires changing the Personality Module Code, which is protected by factory passwords. Includes changing from a non-dual horsepower to a dual horsepower Personality Module.3. Read Customer Passwords If the owner loses 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.Top Engine Limit (TEL)
Maximum engine rpm when the engine is under load. The engine will still achieve Rated RPM under no load conditions. TEL is dependent upon the RATING number, with some RATING numbers allowing little or no variation as specified below. Low Idle Engine RPM
Minimum engine rpm. 4. Clear Certain Diagnostic Codes Diagnostic Code 190-00 (Engine Overspeed Warning) requires factory passwords to clear once it is logged. Diagnostic Code 252-11 Incorrect Engine Software (59) also requires factory passwords. It should be cleared only is you are certain the personality module is for the engine it is installed on. Certain other codes require customer passwords. The majority of logged codes require no passwords to clear.Since factory passwords contain alphabetic characters, only the Electronic Service Tool 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 Electronic Service Tool will request factory passwords and will provide on its screen most of the information required to obtain the passwords.Customer Passwords
Customer passwords are required to change ANY customer parameter. Customer Parameters are those that affect power ratings within a family. Refer to Customer Specified Parameters for more detail on what parameters are customer programmable.The Electronic Service Tool may be used to change Customer Parameters. To obtain customer passwords, contact the machine owner. If the owner has lost his passwords, customer passwords may be read using an Electronic Service Tool (factory passwords are required in order to read the customer passwords) by following these steps.A. Use the Electronic Service Tool to access Read/Change System Configuration Parameters, then Read Customer Parameters.B. When the Factory Passwords screen appears, record the information listed on the Factory Passwords Worksheet in this manual.C. Obtain the factory passwords. The information recorded from the Factory Passwords Worksheet must be provided, and generates a permanent record at Caterpillar of the access.D. Enter the Factory Passwords from the Factory Passwords screen.E. When the Read Customer Passwords screen appears, record the Customer Passwords. The Customer Passwords may then be used to change Customer Parameters.