Originally Posted by
joecar
The default/factory programming in the LC-1 gives 0V=7.35AFR and 5V=22.35AFR, which is represented by equation afr = (AD1 x 3) + 7.35...
But it looks like you're seeing the problem of voltage offset...
Do this:
- connect FlashScan to vehicle,
- connect LC-1 to FlashScan V1,
- program LC-1 to output 3.5V, observe what EXT.AD1 says on scantool,
- program LC-1 to output 1.5V, observe what EXT.AD1 says on scantool,
- program LC-1 back to default.
Note:
- connect the serial cable to the LC-1 OUT connector, connect the DB9 end to your laptop;
- connect the terminator plug to the LC-1 IN connector;
- to program the LC-1 use the LM Programmer software from Innovate;
- after you reprogram the LC-1, you have to remove power for a moment, then reconnect power.
For example:
if scantool reads say 0.5V too high consistently across the range,
then the equation would become afr = EXT.AD1 * 3 + 7.35 - 0.5
This can be put in the calc_pids.txt file, we can show you how.