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The Cat® Electronic Technician (ET) can be used to view certain parameters that can affect the operation of the engine. Cat ET can also be used to change certain parameters. Some parameters cannot be changed and some applications do not allow any changes to the programmable monitoring system. The parameters are stored in the Electronic Control Module (ECM). Some of the parameters are protected from unauthorized changes by passwords. Parameters that can be changed have a tattletale number. The tattletale number shows if a parameter has been changed.The parameters are divided into two different types:Customer Specified Parameters - Customer passwords may be required to change the values of customer specified parameters.System Configuration Parameters - System configuration parameters affect the emissions of the engine or the power of the engine. Factory passwords may be required to change the values of system configuration parameters.
Illustration 1 g02161343
Typical configuration screen
Connect to Cat ET.
Select the Service tab.
Select the Configuration tab to view the configuration parameters.If an ECM is replaced, the appropriate parameters must be copied from the old ECM. Copy the parameters with the "Copy Configuration" feature of the Cat ET. The "Copy Configuration" tab is below the "Configuration" tab. Alternatively, the settings can be recorded on paper and then programmed into the configuration screen that is for the new module.
Changing the parameters during engine operation can cause the engine to operate erratically and can cause engine damage.Only change the settings of the parameters when the engine is STOPPED.
Check Programmable Parameters
Illustration 2 g02280534If a programmable parameter has not been programmed, the ECM will generate a 268-2 or 630-2 diagnostic code. The programmable parameter that is not programmed will be listed under the code. Illustration 2 shows the parameters that are not programmed under the 268-2 code. The unprogrammed parameters will be set to default. Certain aspects of the engines performance and engine monitoring may be affected.If "Injector Trim" is displayed below a 268-2 or 630-2 diagnostic code on Cat ET, refer to Troubleshooting, "Injector Trim File - Install".Gas Analysis
Data from a gas analysis is required for determining if the fuel quality (heating value) of the LNG fuel meets the minimum requirements of the product. The data must be entered into the Caterpillar Software, LERW4485, "Gas Engine Rating Pro (GERP)". Refer to Application and Installation Guide, LEBT0003, "Liquefied Natural Gas (LNG) Powered Dynamic Gas Blending™ (DGB™) Large Mining Trucks" for more information on LNG specifications.Configurable Parameters
The system configuration parameters must be programmed when the application is installed. Program parameters before the initial engine start-up. Incorrect programming of parameters may lead to complaints about performance and/or to engine damage.
Table 2
Configuration Parameters for 3516B Engines
Configuration Parameter Default Value Configurable Options
ECM Identification Parameters
Equipment ID Not Programmed Configured Value
Engine Serial Number Not Programmed Configured Value
ECM Serial Number Factory Programmed Value Not Configurable
Software Group Part Number Current Installed Software Not Configurable
Software Group Release Date Factory Programmed Value Not Configurable
Software Group Description Factory Programmed Value Not Configurable
Rating Selection
"Rating Selection" Multitorque Dual Horsepower/Multitorque
Engine /Gear Parameters
"Gas Substitution System Installation Status" Installed Installed/Not Installed
"Gas Substitution System Enable Status" Enabled Enabled/Disabled
Engine Configuration Parameters
"Engine Warm Up Elevated Idle Feature Enable Status" Enabled Enabled/Disabled
"Engine Pre-Lube" Disabled Enabled/Disabled
"Ether Solenoid Configuration" Not Installed Continuous Flow Solenoid/Not Installed
"Cold Cylinder Cutout" Enabled Enabled/Disabled
"Idle Cylinder Cutout Enable Status" Enabled Enabled/Disabled
System Settings
"FLS" Not Programmed Configured Value
"FTS" Not Programmed Configured Value
Security Access Parameters
"CAN Communication Protocol Write Security" Seed and Key Access Not Configurable
"CAN Communication Protocol Read Security" Seed and Key Access No Security/Seed and Key Access
"Total Tattletale" Accumulated Value Not Configurable