Here are a list of temp calibration files for different cars, files here are made for units with aref = 256 (standard since early 2006, see BuildProcedures/SectionThree)
Most installs best work with tempsensor_upload.bat 2252 2252 256
that is
- 2252 Ohm ntc type sensor for airtempsensor and
- 2252 Ohm ntc type sensor for coolant as well
If you have doubts, provide measurement(s) so we can help you select the best temperature curve. Actually with the common ntc type sensor, just one temperature point is sufficient (easiest with cold engine when sensor temperature is same as environment)
- sensor temperature
- sensor Ohm (when disconnected from ECM)
- sensor voltage (when connected to ECM, ECM powered up)
- LCD reading at that temp
- TerminalProgram Manmlp00mll command
- mostly useful if the firmware's vems.hex is known (or at least first 50 lines of vems.hex)
Coolant Sensors
| Car Make | Car model | Engine | sensor partno# | Bias R | calibration file link |
| Volvo | 940 | B230FK | unknown | standard | [clt.hex] |
| Car Make | Car model | Engine | sensor partno# | Bias R | calibration file link |
| Volvo | 940 | B230FK | unknown | standard | [iat.hex] |