MMCD logger not reading fuel trims

[bluestreak9999]

I just got my palm m105 hooked up with mmcd 1.8g. I am able to read rpm, duty cycle, knock, and timing, but the fuel trim low, mid, high, and o2 readings stay at eactly 100. Has anyone had a similar problem? I am thinking maybe the o2 sensor may be bad but I am not getting any engine codes.

 

[steve]

You might want to read the info on the DSMLink wiki on fuel trims. fueltrimupdatepoints [ECMTuning - wiki]

The ECU has to first enter closed loop before it can go into learning mode where it updates the fuel trims.
There is a list of things than can keep it from ever getting to learn mode and you need to check each.