| Diagnostic Codes Table | ||
|---|---|---|
| Code and Description | Conditions which Generate this Code | System Response |
| 268-2 Programmed Parameter Fault erratic, intermittent, or incorrect | The engine's Electronic Control Module (ECM) detects that one or more of the programmable parameters have not been programmed. | The ECM may use a default torque map or the ECM may limit the engine to low idle.
The code is active only. |
System configuration parameters are parameters that are configured to specify the engine's emissions levels, the power rating, and the specific application. Default values for the parameters are programmed at the factory. Some parameters may be changed in order to equip the engine for a specific application. The system configuration parameters must be reprogrammed if the ECM is replaced. It is not necessary to reprogram the system configuration parameters if you update the ECM flash file. Certain configuration parameters are stamped into the engine information plate.
Note: If the parameters that are protected with the factory passwords are changed, the Caterpillar warranty may be voided.
If a programmable parameter has not been programmed, the ECM will generate a 268-2 diagnostic code. The unprogrammed parameters will be set to default. Certain aspects of the engine's performance and engine monitoring may be affected.
If "Injector Trim" is displayed below a 268-2 diagnostic code on Cat ET, refer to Troubleshooting, "Injector Trim File - Install".
This parameter allows the customer to enter a description into the ECM in order to identify the engine's application. A maximum of 17 characters can be entered in the field.
The engine serial number must be programmed to match the engine serial number that is stamped on the engine information plate. The engine serial number is not preprogrammed into a replacement ECM.
The serial number of the ECM that is stored in the ECM memory
The part number of the flash file that is currently installed in the ECM
The release date of the flash file that is currently installed in the ECM
The description of the application for the flash file that is currently installed in the ECM
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.
The line frequency of the generator set
The optimum speed of the engine
The output power of the generator set in kilowatts
The kVA rating of the generator set
The performance maps in the software
This is the engine's "Test Specifiction Number". Use this number to retrieve data that is related to the engine's specifications from the Technical Marketing Information System (TMI). The following information can be retrieved from TMI:
- "As shipped consists"
- "Engine test specifications"
- "Systems data"
- "Physical data"
- "Gasket kit data"
- "Reman parts"
- "Performance data"
A link to TMI Web can be found on the web site for the Service Information System (SIS).
This parameter defines the maximum rate of engine acceleration.
This parameter defines the low idle rpm of the engine.
This parameter enables the engine to be operated in a load sharing system.
Droop/Isochronous Switch Enable
This parameter defines the installation status of a switch that is used to select droop or isochronous mode.
This parameter allows the customer to select droop or isochronous mode.
Remote Emergency Stop (E-Stop) Switch Input Type Configuration
This parameter sets the installation status and the configuration of the emergency stop switch.
Desired Speed Input Configuration
This parameter defines the type of signal that is used for throttle control. This parameter will be used while a valid signal is present at the expected input.
The following input types are available:
PWM - A Pulse Width Modulated signal (PWM) is received via terminal P1-66 at the ECM connector.
CAN Input - A J1939 signal is received via the CAN data link.
0 - 5 VDC - An analog signal is received via terminal P1-15 at the ECM connector.
Secondary Desired Speed Input Configuration
This parameter defines the type of signal that is used as a secondary throttle control. If the signal for this input becomes unavailable, the ECM will revert to this type of signal for the throttle control. Refer to "Desired Speed Input Configuration" for the input types that are available.
Fuel Enable Input Configuration
This parameter allows the selection for the type of input that is used to enable the fuel for the engine.
Secondary Fuel Enable Input Enable Status
This parameter sets the installation status of a secondary switch that can be used to enable the fuel for the engine.
This parameter can be set to either "Installed" or "Not Installed".
Program this parameter to the capacity of the engine oil.
The ECM records data that is related to equipment maintenance. The ECM will activate the maintenance indicator lamp when scheduled maintenance is due. The maintenance indicator lamp can be reset by actuating the maintenance clear switch. The maintenance interval may be based on operating hours or fuel consumption. The ECM provides information that pertains to maintenance intervals and the last maintenance that was performed.
This parameter allows the customer to define the maintenance interval if "Maintenance Indicator Mode" is programmed to one of the manual options. Refer to the Operation and Maintenance Manual for more information.
This parameter is used in determining the engine's rate of response to an engine load.
Governor Minimum Stability Factor
This parameter is used by the ECM to offset the steady state speed error when the steady state speed error is less than 20 rpm.
Governor Maximum Stability Factor
This parameter is used by the ECM to offset the steady state speed error when the steady state speed error is greater than 20 rpm.
This parameter represents the fuel system adjustment that was made at the factory in order to fine tune the fuel system to the engine. The correct value for this parameter is stamped on the engine information plate. Only change this value if the engine is rerated or if a new ECM has been installed. Factory passwords are required to change this parameter.
This parameter is another parameter that represents a fuel system adjustment that was performed at the factory in order to fine tune the fuel system to this engine. Only change this value if the engine is rerated or if a new ECM has been installed. Factory passwords are required to change this parameter.
The total tattletale counts the number of changes to system parameters.
| System Configuration Parameters | |||
|---|---|---|---|
| Parameter | Available Range or Options | Default | Required Password |
| ECM Identification Parameters | |||
| Equipment ID | 17 alphanumeric characters | Blank | Customer |
| Engine Serial Number | 0XX00000 or XXX00000 | Blank | Factory |
| ECM Serial Number | Hardware Dependent | Blank | Read Only(1) |
| Software Group Part Number | Software Dependent | Read Only(1) | |
| Software Group Release Date | Software Dependent | Read Only(1) | |
| Software Group Description | Software Dependent | Read Only(1) | |
| Selected Engine Ratings | |||
| Rating Number | Software Dependent | None | |
| Rated Frequency | Software Dependent | Read Only(1) | |
| Rated Engine Speed | Software Dependent | Read Only(1) | |
| Rated Real Genset Power | Kilowatts (if applicable) | Rated power | Read Only(1) |
| Rated Apparent Genset Power | Kilowatts (if applicable) | Rated power | Read Only(1) |
| Rating Configuration | Software Dependent | Read Only(1) | |
| Test Spec | Software Dependent | Read Only(1) | |
| Engine/Gear Parameters | |||
| Engine Acceleration Rate | 5 - 2000 rpm/sec | 500 rpm/sec | None |
| Low Idle Speed | 600 to 1200 rpm | 1200 rpm | None |
| Engine Speed Droop | 0.0 - 8.0 % | 3.0% | None |
| Engine State Control Input Configuration | Not installed
CAN Hardwired |
Not Installed | |
| Cooldown Speed | |||
| Cooldown Duration | 0 - 233 seconds | 0 seconds | |
| Engine Prelube Duration | 0 - 210 seconds | 0 seconds | None |
| Crank Duration | 0 - 60 seconds | 30 seconds | None |
| Maximum Number of Crank Cycles | 0 - 10 | 5 | None |
| Crank Terminate Speed | 200 - 700 rpm | 400 rpm | None |
| Droop/Isochronous Switch Enable | Enabled or Disabled | Disabled | None |
| Droop Mode Selection | Droop or Isochronous | Isochronous | None |
| Emergency Shutdown Override Switch Installation Status | Installed or Not Installed | Not Installed | Factory |
| Emergency Shutdown Override Switch Input Configuration | Switch to Ground
CAN Input |
Switch to Ground | None |
| Remote Emergency Stop (E-Stop) Switch Input Type Configuration | Not Installed
Normally Open Normally Closed |
Normally Open | None |
| Cold Cylinder Cutout Feature Installation Status | Installed or Not Installed | Not Installed | None |
| Desired Speed Input Configuration | PWM
CAN 0 - 5 VDC |
PWM | None |
| Secondary Desired Speed Input Configuration(2) | PWM
CAN 0 - 5 VDC Unistalled |
Not Installed | None |
| Fuel Enable Input Configuration | Switch
J1939 |
Switch | None |
| Secondary Fuel Enable Input Configuration | Enabled or Disabled | Enabled | None |
| Coolant Level Sensor Installation Status | Installed or Not Installed | Not Installed | None |
| Aftercooler Coolant Level Sensor Installation Status | Installed or Not Installed | Not Installed | None |
| Right Exhaust Temperature Sensor Installation Status | Installed or Not Installed | Not Installed | None |
| Left Exhaust Temperature Sensor Installation Status | Installed or Not Installed | Not Installed | None |
| Fuel Level Sensor Instation Status | Installed or Not Installed | Not Installed | None |
| Low Fuel Level Warning Threshold | |||
| Engine Oil Temperature Sensor Installation Status | Installed or Not Installed | Not Installed | None |
| Maintenance Parameters | |||
| Engine Oil Capacity | |
|
None |
| Maintenance Indicator Mode | Disabled
Auto Fuel Auto Hour Man Fuel Man Hour Start New Interval |
Disabled | None |
| PM1 Interval | Man Hour
0 to 32676 Man Fuel to |
Man Hour
589 Man Fuel |
None |
| System Settings | |||
| Governor Gain Factor | 0 - 65,535 | 16,578 | None |
| Governor Minumum Stability Factor | 0 - 65,535 | 806 | None |
| Governor Maximum Stability Factor | 0 - 65,535 | 3225 | None |
| FLS | Programmed at the Factory | Factory | |
| FTS | Programmed at the Factory | Factory | |
| Security Access Parameters | |||
| Total Tattletale | 0 to 65535 | 0 | Read Only(1) |
| (1) | This parameter can be viewed only. No changes are allowed. |
| (2) | The configuration of this parameter is dependent on the configuration of the throttle controls for the application. Refer to Troubleshooting, "Speed Control - Test" for additional information. |
| Parameter Worksheet | |
|---|---|
| Security Access Parameters | |
| Equipment ID | |
| ECM Serial Number | |
| Software Group Part Number | |
| Software Group Release Date | |
| Software Group Description | |
| Selected Engine Rating | |
| Rating Number | |
| Rated Frequency | |
| Rated Engine Speed | |
| Rated Real Genset Power | |
| Rated Apparent Genset Power | |
| Rating Configuration | |
| Test Spec | |
| Engine/Gear Parameters | |
| Engine Acceleration Rate | |
| Low Idle Speed | |
| Engine Speed Droop | |
| Cooldown Speed | |
| Cooldown Duration | |
| Engine Prelube Duration | |
| Crank Duration | |
| Maximum Number of Crank Cycles | |
| Crank Terminate RPM | |
| Droop/Isochronous Switch Enable | |
| Droop mode selection | |
| Emergency Shutdown Override Switch Installation Status | |
| Emergency Shutdown Override Switch Input Configuration | |
| Remote Emergency Stop (E-Stop) Switch Input Type Configuration | |
| Cold Cylinder Cutout Feature Instation Status | |
| I/O Configuration Parameters | |
| Desired Speed Input Configuration | |
| Secondary Desired Speed Input Configuration(1) | |
| Fuel Enable Input Configuration | |
| Secondary Fuel Enable Input Configuration | |
| Coolant Level Installation Status | |
| Aftercooler Coolant Level Installation Status | |
| Right Exhaust Temperature Installation Status | |
| Left Exhaust Temperature Installation Status | |
| Fuel Level Sensor Instation Status | |
| Maintenance Parameters | |
| Engine Oil Capacity | |
| "Maintenance Indicator Mode" | |
| "PM1 Interval" | |
| System Settings | |
| Governor Gain Factor | |
| Governor Minumum Stability Factor | |
| Governor Maximum Stability Factor | |
| Injector Serial Numbers | |
| Cylinder 1 | |
| Cylinder 2 | |
| Cylinder 3 | |
| Cylinder 4 | |
| Cylinder 5 | |
| Cylinder 6 | |
| Cylinder 7 | |
| Cylinder 8 | |
| Cylinder9 | |
| Cylinder10 | |
| Cylinder 11 | |
| Cylinder12 | |
| Information from the Engine Information Plate | |
| Engine Serial Number | |
| FLS | |
| FTS | |
| (1) | The configuration of this parameter is dependent on the configuration of the throttle controls for the application. Refer to Troubleshooting, "Speed Control - Test" for additional information. |
Note: Compare the FLS and the FTS from the ECM with the values that are listed on the engine information plate. Use of incorrect parameters could cause damage to the engine. The use of the wrong parameters may also void the Caterpillar warranty or the emission certification for the engine.