APPS calibration and code P0743

[John 98 Cummins]

Hi, Ive had code P0122 so  i checked the apps voltage and at idle it was .39 and  max was 3.58.   So i loosened the two T20 torx on the apps and adjusted it up to .535..    then, i calibrated to the ecm by disconnecting battery for 20 minutes,  reconnecting, key on, depress accelerator once, let off and key off..  my new apps range is  .53 to   3.54.   ive run it but not driven it. seems to run the way it had, which is good. no problem with how it runs.  ive had trouble with it shifting,  it doesnt want to shift down as quickly as i think it should.  and it seems to shift up sooner into the next gear than maybe it should.  seems to lock up sooner than it should.  I dont recall what rpm it usually goes to lockup. 

Update:  went for a drive.  WHAT A HUGE DIFFERENCE.  Drives and shifts alot better.  maybe not perfect but down shifts better.  also, has more acceleration.   Would readjusting the apps to 0.35 volts at idle improve it more ?

 

So i cleared all the codes.  0122 didnt come back.  BUT i got this code.  PO743  Torque converter clutch circuit electrical.  It has a new alternator plus a filter on it to filter out any noise from the alternator.    What might cause the 0743 and how to trouble shoot that ?

Thanks

Edited January 19 by John 98 Cummins