Isx faults

[BarnesK]

Have a truck that was bought at auction, repo sale
Has a delete in it
2007 kw t800 and has a isx cm871 swapped into it
Have fault code 285 active,I have gone through all the multiplexing and cannot find the error
Insite says it is service brake time out error
Second fault is the coolant level 0197 have gone throughout the harness ohmed all the wires and checked pin outs. Replace sensor as well
Any help would be greatly appreciated

Thanks