11399A 1 Mercury ARM ASSEMBLY

Table 1
Diagnostic Codes Table    
Code    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 will set the unprogrammed parameter(s) to a default value.
The code is logged.    System configuration parameters are parameters that affect emissions, power of the engine, and machine applications. Default values for the parameters are programmed at the factory. Some parameters may be changed by the customer in order to suit the needs of the specific application. You must reprogram the system configuration parameters if the Electronic Control Module (ECM) is replaced and/or you reprogram the engine rating. You do not need to reprogram the system configuration parameters if you replace the personality module. Proper values for these parameters are available on Caterpillar Electronic Technician (ET). Certain configuration parameters are also stamped on the engine information plate.Note: If the parameters that are protected with factory passwords are changed, the Caterpillar warranty may be voided.Equipment ID
The equipment ID parameter allows the customer to enter a description into the ECM in order to identify the machine. A maximum of 17 characters can be entered in the field.Engine Serial Number
The engine serial number should be programmed in order to match the engine serial number that is stamped on the engine information plate. The engine serial number is not preprogrammed on a replacement ECM.FLS (Full Load Setting)
FLS is a number that represents the adjustment to the fuel system that was made at the factory in order to fine tune the fuel system. The correct value for this parameter is stamped on the engine information ratings plate. This value should only be changed if the engine is rerated or a new ECM is installed. Factory passwords are required.FTS (Full Torque Setting)
FTS is similar to FLS. This value should only be changed if the engine is rerated or a new ECM is installed. Factory passwords are required.Fuel Air Ratio Control Adjust (FARC)
FARC is a fuel system adjustment that has been performed at the factory in order to fine tune the fuel system. The value that is assigned to the parameter is stamped on the Engine Information plate for each engine.Throttle Pedal Configuration
Throttle pedal configuration is used to define the style of throttle position sensor that is installed in the machine. This parameter should be programmed to "10 percent to 50 percent" if the machine is equipped with the early style of throttle position sensor. The parameter should be programmed to "10 percent to 90 percent" if the machine is equipped with the current style of throttle position sensor.Early style of throttle position sensor - The throttle position sensor produces a duty cycle of 10 percent to 22 percent at low idle speed. At high idle speed, the throttle position sensor produces a 40 percent to 50 percent duty cycle.Current style of throttle position sensor - The throttle position sensor produces a duty cycle of 10 to 22 percent at low idle speed. At high idle speed, the throttle position sensor produces a 75 percent to 90 percent duty cycle.Engine Fan Control
The engine fan control parameter allows the operation of this feature to be enabled or disabled.Note: The machine is not equipped with the hardware that is required for this feature.Top Engine Fan Speed
The top engine fan speed parameter is used to set the top speed of the fan. Factory passwords are required.Note: The machine is not equipped with the hardware that is required for this feature.Ether Control
The ether control parameter allows the operation of this feature to be enabled or disabled.Engine Pre-Lube
The engine pre-lube parameter allows the operation of this feature to be enabled or disabled.Parameter Table
Table 2
Customer Specified Parameters    
Parameter    Available Range or Options    Default    Required Password    
Equipment ID     17 characters     blank     none    
Engine Serial Number     8 characters     blank     none    
FLS     -128 to +127     0     Factory    
FTS     -128 to +127     0     Factory    
Fuel Air Ratio Control Adjust     100 to 250     100     none    
Throttle Pedal Configuration     10 to 50 percent or 10 to 90 percent     10 to 90 percent     none    
Engine Fan Control (1)     Enable or Disabled     Disabled     none    
Top Engine Fan Speed (1)     500 to 1500 rpm     Application dependent     Factory    
Ether Control     Enabled or Disabled     Disabled     none    
Engine Pre-Lube     Enabled or Disabled     Disabled     none    
( 1 ) The machine is not equipped with the hardware that is required for this feature.Parameter Worksheet
Record the following information before you change any programmable parameter.
Table 3
Information from ECM    
Equipment ID    
   
Engine Serial Number    
   
ECM Serial Number    
   
Personality Module Part Number &nbs