4. Data Bytes
The data bytes field is transmitted by the slave task in the response. This field contains from one to eight bytes of payload data bytes. 
5. Checksum
The checksum field is transmitted by the slave task in the response. The LIN bus defines the use of one of two checksum algorithms to calculate the value in the eight-bit checksum field. Classic checksum is calculated by summing the data bytes alone, and enhanced checksum is calculated by summing the data bytes and the protected ID.
The LIN 2.0 specification defines the checksum calculation process as the summing of all values and subtraction of 255 every time the sum is greater than or equal to 256 .
“Figure 28” illustrates how a master task header and a slave task response combine to create a LIN full frame. [12]