SEAL 3468036 - Caterpillar

Coolant Level Sensor Enable/Disable:
Determines if the ECM monitors the Coolant Level Sensor inputs. Passwords
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.3. Read Customer Passwords If the owner loses the customer passwords, they 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 190-00 (Engine Overspeed Warning) requires factory passwords to clear once it is logged. Certain other codes require customer passwords. The majority of logged codes require no passwords to clear.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 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 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.The ECAP may change Customer Parameters. To obtain customer passwords, contact the owner of the vessel. If the owner has lost the passwords, customer passwords may be read using an ECAP (factory passwords are required in order to read the customer passwords) by following these steps:1.