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Engine Parameters
Rating Number:
Number of rating within the horsepower family. The personality module defines the horsepower family (such as 325 hp). This number defines which rating is used (such as 325 hp at 1900 rpm or 325 hp at 2100 rpm) within the family.Top Engine Limit (TEL):
Maximum engine rpm when the engine is under load. The engine will still achieve rated rpm under no load.Minimum ... Map (Rating) DependentMaximum ... Rated rpm + 20 rpmDefault ... Rated rpm + 20 rpmLow Idle RPM:
Minimum engine rpm.Minimum ... 600 rpmMaximum ... 750 rpmDefault ... 700 rpmIdle Shutdown Time:
Time (in minutes) that engine will idle before shutting down (between 3 and 60 minutes). Engine will only shut down if the ECM sees no engine load, no vehicle speed, the parking brake is set and there has been no change in the status of the service brakes and clutch. If this parameter is programmed to 0, the feature is disabled. Refer to P-230: Idle Shutdown Timer Test for more detail on operation of the idle shutdown timer.Minimum ... 3 min.Maximum ... 60 min.Default ... 0 min.Vehicle ID:
Identification of vehicle assigned by customer. Used only for customer reference; not used by the ECM.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 Specified Parameters. Using factory passwords, one can read Customer Passwords, then use those Customer Passwords to program Customer Specified Parameters.4. Clear certain diagnostic codes.Only Diagnostic Code 35 (Engine Overspeed) requires Factory Passwords to clear once it is LOGGED. Clearing certain other codes requires 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. Since factory passwords contain alphabetic characters, only the ECAP may perform these functionsTo 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 which parameters are customer programmable.Either the ECAP or DDT can be used to 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