78473 Mercury BACKLASH INDICATOR TOOL

Table 1
Minimum Maximum Default
2485 PPKM (4000 PPM) 93226 PPKM (150000 PPM) 8696 PPKM (14000 PPM) "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 "Vehicle Speed Cal 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 will be 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 43000 revolutions per km
65000 revolutions per mile 0 "Vehicle Speed Cal (J1939 ABS)"
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 must transmit tire revolutions per mile that is based on the tire size. If the tire size is changed from the tire size that is programmed in the ABS 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, 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 by the actual tire revolutions per mile. Contact the manufacturer of the ABS in order to verify that this message is supported.If the "Vehicle Speed Input" parameter is programmed to "Vehicle Speed Cal J1939-ABS", this parameter must be programmed. If this parameter is not programmed, 253-02 Check Customer or System Parameters will be 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 3
Minimum Maximum Default
0 6.550 0 "Vehicle Speed Limit (VSL)"
The "Vehicle Speed Limit" (VSL) is the maximum vehicle speed that is allowed by the ECM. The ECM will shut off fuel above this speed. An inexperienced driver may think that something is wrong with the engine because the ECM will not fuel the engine above this vehicle speed limit. Vehicle speed limiting allows the implementation of a gear fast/run slow specification for the truck. The gear fast/run slow specification for the truck improves fuel economy while the parameter for the vehicle speed limit limits the maximum vehicle speed of the truck.Note: The driver reward can be used to automatically adjust the VSL according to the driver's operating techniques.
Table 4
Minimum Maximum Default
48 km/h (30 mph) 204 km/h (127 mph) 204 km/h (127 mph) "VSL Protection"
The "VSL Protection" is the maximum engine rpm when there is a problem with the vehicle speed signal that is detected by the ECM. The ECM limits the engine to this engine rpm when the ECM senses no vehicle speed signal, and a load on the engine. This is a feature that is used to prevent tampering by running without a vehicle speed input to the ECM.Note: When this parameter is programmed to the programmed TEL rpm, the ECM disables 84-01 Vehicle Speed loss of signal and 84-10 Vehicle Speed signal rate of change and the "VSL Protection" may be exceeded by disconnecting the vehicle speed sensor.
Table 5
Minimum Maximum Default
1000 rpm TEL rpm TEL rpm "Tachometer Calibration"
The "Tachometer Calibration" is used by the ECM to translate the engine speed signal into revolutions per minute for a tachometer. The "Tachometer Calibration" is programmed in pulses per revolution (PPR). The programmable range is from 12.0 PPR to 500.0 PPR in 0.1 PPR increments.
Table 6
Minimum Maximum Default
12.0 PPR 500.0 PPR 113.0 PPR "Soft Vehicle Speed Limit"
The "Soft Vehicle Speed Limit" operates in conjunction with the "Vehicle Speed Limit". The "Soft Vehicle Speed Limit" limits the vehicle speed within the following range:
The minimum value is 4 km/h (2.5 mph) below the programmed "Vehicle Speed Limit" at full load.
The maximum value is 4 km/h (2.5 mph) above the selected "Vehicle Speed Limit" at no load.
Table 7
Alternative Default
"Yes" "No" "Two Speed Axle - Low Speed Range Axle Ratio"
The "Two Speed Axle - Low Speed Range Axle Ratio" must be progr