878089 Mercruiser PLUG, Pipe (.0625-27)

System configuration parameters are parameters that affect emissions, power of the engine, and other features that define the characteristics of the engine subsystems. The parameters are preprogrammed at the factory. You may need to reprogram the system configuration parameters if the ECM is replaced and/or if you reprogram the engine rating. You do not need to reprogram the system configuration parameters if you replace the flash file. Caterpillar Electronic Technician (ET) can be used to view the values for these parameters. Certain system configuration parameters are stamped on the engine information plate.If a programmable parameter has not been programmed, the ECM will generate a 268-2 diagnostic code. The programmable parameter that is not programmed is also displayed on Cat ET.
Illustration 1 g02780516Illustration 1 shows the parameters that are not programmed, or may be programmed outside the acceptable range. The parameters that are not programmed, or programmed outside the acceptable range are listed below the 268-2 code. These parameters will be set to the factory default value. Certain aspects of the engines performance and engine monitoring may be affected.If "Injector Trim" is displayed below a 268-2 diagnostic code on Caterpillar Electronic Technician (ET), refer to Troubleshooting, "Injector Trim File - Install".Parameters for the Engine ECM
ECM Identification Parameters
Equipment ID
"Equipment ID" allows the customer to enter a description into the ECM in order to identify the installation. A maximum of 17 characters may be entered in the field. This parameter is only for reference by the customer. This parameter is not required.Engine Serial Number
Program the "Engine Serial Number" to match the engine serial number that is stamped on the engine information plate.Note: When you are requesting factory passwords, always use the engine serial number that is resident in the ECM.ECM Serial Number
The "ECM Serial Number" is stored in the memory of the ECM. The "ECM Serial Number" can be accessed by the use of the service tool.Software Group Part Number
This parameter identifies the part number of the flash file that is currently installed in the ECM.Software Group Release Date
This parameter identifies the release date of the flash file that is currently installed in the ECM.Software Group Description
This parameter identifies the description of the application for the flash file that is currently installed in the ECM.Selected Engine Rating
Rating Number
The rating number corresponds to the selected set of performance maps that has been selected for this application. There may be more than one set of performance maps that are available for this engine. All of the maps are resident in the flash file for the engine.Engine/Gear Parameters
Engine Acceleration Rate
The engine acceleration rate defines the maximum rate of engine acceleration and deceleration.
Table 2
Minimum Default Maximum
N/A N/A 400 rpm/sec Low Idle Speed
This parameter is set to configure the low idle rpm of the engine.
Table 3
Minimum Default Maximum
100 rpm 900 rpm 1369 rpm Engine State Control
Accidental engine starting can cause injury or death to personnel working on the equipment.To avoid accidental engine starting, turn the battery disconnect switch to the OFF position. Remove the key for the battery disconnect switch. Use a secure padlock in order to lock the battery compartment access door.Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.
Note: Only allow qualified personnel to change the parameters that are for the engine state control.Engine State Control Input Selection Method
This parameter identifies the type of control input selection that will be used by the ECM to identify the operating state of the engine.
Table 4
Options Default
Configured Value
Last Active Source
Switched Source Configured Value Engine State Control Input Configuration
This paramete