Re-scaling MAT counts table $8D SAUJP

[34blazer]

dumb question.....but, to edit the A/D lookup a LF133, can i find it with hex editor or do i need to make the changes to the disassembly(notepad?) and reassemble? also, is there a standard equation to convert A/D counts or will i need to figure it out? not entirely sure on this....

Thanks!

[The1]

changning it in hex should be ok, make a spreadsheet and interpolate the values further and then use the range you want.

[34blazer]

as far as the location, LF133, I cant find it. Im still learning how it is all mapped, is there another way i should be looking at it? it has to be displayed differently.

as far as the equation goes, I didnt understand what you meant. I understand how to change the range of the counts, but do not know how to convert them to temperature.

[charlay86]

as far as the location, LF133, I cant find it. Im still learning how it is all mapped, is there another way i should be looking at it? it has to be displayed differently.

LF133 is Location 0xF133 in the bin file.
calculation for temperature is usually: (hex_value * 0.75) - 40 = Temperature in °C

[34blazer]

as far as the location, LF133, I cant find it. Im still learning how it is all mapped, is there another way i should be looking at it? it has to be displayed differently.

LF133 is Location 0xF133 in the bin file.
calculation for temperature is usually: (hex_value * 0.75) - 40 = Temperature in °C

so on the address bar on the left im looking for 0000F133? or 0000133? or 000033? still cant find it and its driving me nuts LOL

[charlay86]

Just ignore the 'L', you are looking for 0000F133

[34blazer]

Just ignore the 'L', you are looking for 0000F133

yeah its not me then, address only goes up to 00007FF0. dont know where else it could be lol

[charlay86]

hmm ok, well you can try searching the bin file for the table.
tunerpro's hex editor can't search so you'll need to use something else, eg winhex, HxD.

hxdsearch.png

[VL400]

The bin must be only 32k, so its 0-7FFF in size. The ECU/processor maps it to 8000-FFFF, so in ECU speak F133 is 7133 in your bin (7133 + 8000 = F133).

When I have looked at rescaling I found it easier to play with pull up resistors and leave the code alone, a temp sensor is highly non-linear so pullup choice is pretty critical for the range you expect to operate in.

[34blazer]

ugh...somethings not right, its not there either. i must be doing something wrong LOL