ROD-PISTON-YM 3783976 - Caterpillar

passwords may be used to protect customer parameters from being changed. Caterpillar Electronic Technician (ET) can be used to change certain parameters. There are some parameters that cannot be changed and there are some applications that do not allow any changes to the programmable monitoring system. The passwords are programmed into the Electronic Control Module (ECM) with the Cat ET. One password may be programmed or both passwords may be programmed. If customer passwords are not programmed, customer parameters may be changed by anyone.To obtain customer passwords, contact the owner of the engine. If the owner has forgotten the customer passwords, customer passwords may be read by using Cat ET. Factory passwords are required in order to read customer passwords.Use the following procedure in order to read customer passwords with Cat ET:
Select the "Information" menu. Then select "Passwords".
When the "Factory Password" screen appears, record the information that is listed on the "Factory Passwords Worksheet". Refer to programming parameters Troubleshooting, "Factory Passwords Worksheet" for additional information.
Obtain the factory passwords. The information that is recorded on the "Factory Passwords Worksheet" must be provided. When you obtain the factory passwords, a permanent record of your access is generated at Caterpillar.
From the "Factory Password" screen, enter the factory passwords.
When the "Read Customer Passwords" screen appears, record the customer passwords. The customer passwords may then be used to change parameters that are customer programmable.