0512746 JOHNSON CONNECTOR, Sending unit

Table 1
Diagnostic Codes Table    
Code and Description     Conditions which Generate this Code     System Response     Procedure    
268-2
Programmed Parameter Fault : Erratic, Intermittent, or Incorrect     The Electronic Control Module (ECM) detects that one or more of the programmable parameters have not been programmed.     The engine performance may be affected by unprogrammed parameters. The unprogrammed parameters determine the action that is taken by the ECM. The ECM may use a default torque map or the ECM may limit the engine to low idle.     Program the missing parameter.    
1495-2
Injector Trim Codes Not Programmed     The ECM detects that one or more of the injector trim codes has not been programmed. The ECM has been powered for three seconds.     The code is logged in memory. The engine will start. The ECM will use a default setting of 0000 for an unprogrammed injector trim code.     Program the missing injector trim code.    System configuration parameters are parameters that affect emissions and power of the engine. 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. Values for these parameters can be viewed on Caterpillar Electronic Technician (ET). Certain configuration parameters are also stamped on the engine information plate.No password is required for programming a new ECM during the first 100 hours of service life. This 100 hour "free configuration" feature enables the customer to tailor the programmable setpoints to the requirements of the installation. Exceptions are "Fuel Limit" and "Personality Module Mismatch".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 performance and engine monitoring may be affected.If an injector code has not been programmed, the ECM will generate a 1495-2 diagnostic code. The injector code is a number that is found on each of the unit injectors. The ECM uses this number to compensate for manufacturing variations between individual injectors. If you replace any of the unit injectors, reprogram the code for the new injectors. Also, if you replace the ECM, reprogram all of the injector codes.Note: The injector codes are not part of the "Configuration" screen on the electronic service tool. "Injector Codes Calibration" can be found under "Calibrations" in the "Service" menu on Cat ET.Parameter Table
Table 2
System Configuration Parameters    
Parameter     Default     Range     Password
Required    
"Personality Module Interlock"             Yes    
"ECM Serial Number"             Yes    
"Engine Serial Number"     00000000     8 alphanumeric numbers     No    
"Equipment ID"     00000000000000000     17 alphanumeric numbers     No    
"Full Load Setting (FLS)"     0     -128 to +127     Yes    
"Full Torque Setting (FTS)"     0     -128 to +127     Yes    
"Fuel Ratio Control Offset (FRC)"     0     −25 to 0     No    
"Rated Fuel Positon (mm)"     14     The minimum rack is based on engine power.     Yes    
"Fuel Correction Factor (%)"     0     -25 to +25     No    
"Low Idle (rpm)"     1000     810 to 1000     No    
"Governor Gain Factor"     Engine rating     0 to 39,999     Yes    
"Governor Minimum Stability Factor"     Engine rating     0 to 39,999     Yes    
"Governor Maximum Stability Factor"     Engine rating     0 to 39,999     Yes    
"Acceleration Rate (rpm/sec)"     250     5 to 2000     No    
"Programmable Torque Scaling"     The minimum rack is based on engine power.     The minimum rack is based on engine power.     Yes    
"Engine Cooling System Configuration"     SCAC     SCAC or JWAC     Yes    
"Cold Cylinder Cutout"     Disabled     Enabled
Disabled     No    
"Cooldown Engine Speed (rpm)"     900     810 to 1800     No    
"Engine Cooldown Duration (min)"     0     0 to 30     No    
"Crank Duration (sec)"     0     0 to 60     No    
"Maximum Number of Crank Cycles"     0     0 to 10     No    
"Crank Terminate Speed (rpm)"     400     100 to 500     No    
"Total Tattletale"     0     0 to 255     N/A    
"Engine Oil Temperature Sensor Installation Status"     Not Installed     Installed
Not Installed        
"Coolant Level Installation Status"     Not Installed     Installed
Not Installed        
"Aftercooler Coolant Level Installation Status"     Not Installed     Installed
Not Installed        
Injector Code (1)     0000     4 numbers     No    
Injector Code (2)     0000     4 numbers     No    
Injector Code (3)     0000     4 numbers     No    
Injector Code (4)     0000     4 numbers     No    
Injector Code (5)     0000     4 numbers     No    
Injector Code (6)     0000     4 numbers     No    
Injector Code (7)     0000     4 numbers     No    
Injector Code (8)     0000     4 numbers     No    
Injector Code (9)     0000     4 numbers     No    
Injector Code (10)     0000     4 numbers     No    
Injector Code (11)     0000     4 numbers     No    
Injector Code (12)     0000     4 numbers     No    
Injector Code (13)     0000     4 numbers     No    
Injector Code (14)     0000     4 numbers     No    
Injector Code (15)     0000     4 numbers     No    
Injector Code (16)     0000     4 numbers     No    Parameter Descriptions
"Personality Module Interlock"
The "Personality Module Interlock" is automatically programmed by the ECM after factory passwords are entered."ECM Serial Number"
The "ECM Serial Number" is stored