SHAFT-IDLER 1460984 - Caterpillar

"Vehicle Speed Calibration"
This calibration is used when the ECM is configured to use a vehicle speed sensor that is connected to the ECM vehicle harness connector J1/P1:32 & 33.The "Vehicle Speed Calibration" is the value that is used by the ECM in order to translate the vehicle speed signal into kilometers per hour (miles per hour). When a vehicle speed sensor is connected to an ECM input, the "Vehicle Speed Input" must be programmed to "J1/P1:32 & 33". This parameter is programmed in pulses per kilometer (PPKM) or pulses per mile (PPM). This parameter must be programmed. If this parameter is not programmed, 253-02 Check Customer or System Parameters (56) will become active. This parameter affects the cruise control and the ECM speedometer signal. Also, this parameter can affect the PTO operation, extended idle and trip totals.
Table 1
Manufacturer     Minimum     Maximum     Default    
GM     2485 PPKM (4000 PPM)     238080 PPKM (384000 PPM)     19884 PPKM (32000 PPM)    
Other     2485 PPKM (4000 PPM)     238080 PPKM (384000 PPM)     "Not Programmed"    "Vehicle Speed Cal (J1939-Trans)"
The "Vehicle Speed Cal (J1939-Trans)" is used when the ECM is configured to use the speed of the transmission output shaft in order to calculate vehicle speed. The "Vehicle Speed Input" parameter must be programmed to "J1939-Trans". This value represents the revolution of the transmission output shaft as revolutions per kilometer (revolutions per mile). This parameter must be programmed. If this parameter is not programmed, 253-02 Check Customer or System Parameters (56) will become active. This parameter affects the cruise control and the ECM speedometer signal. Also, this parameter can affect the PTO operation, extended idle and trip totals.
Table 2
Minimum     Maximum     Default    
0 revolutions per km (0 revolutions per mile)     43000 revolutions per km (65000 revolutions per mile)     "Not Programmed"    "Vehicle Speed Cal (J1939 ABS)"
OCT01 and newer Personality Modules.The "Vehicle Speed Cal (J1939-ABS)" is used to calculate vehicle speed by using the input from the wheel speed. The data from the wheel speed is transmitted via the J1939 data link. The "Vehicle Speed Input" parameter must be programmed to "Vehicle Speed Cal J1939-ABS". The manufacturer of the ABS system must transmit tire revolutions per mile that is based on the tire size. If the tire size is changed from tire size that is programmed in the ABS system, the "Vehicle Speed Cal (J1939-ABS)" must be changed. The value that is contained in the "Vehicle Speed Cal (J1939-ABS)" parameter is a ratio. If the actual tire size is equal to the tire size that is programmed in the ABS system, the "Vehicle Speed Cal (J1939-ABS)" parameter will be "1". The ratio can be found by dividing the tire revolutions per mile that is transmitted by the ABS system by the actual tire revolutions per mile. Contact the manufacturer of the ABS system in order to verify that this message is supported.If the "Vehicle Speed Input" parameter is programmed to "Vehicle Speed Cal J1939-ABS",