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Hello,
I've read this thread with great interest. I am not going to be much help; I have never opened the hood on a 960. But I understand how things work in general. I hope that my rambling on the subject might give you some new paths to explore.
You might find this interesting:
http://forums.turbobricks.com/archive/index.php/t-35724.html
Reading that, and knowing nothing else about the system, I would check the input from two switches before going further: the input from the brake light switch and the "full throttle" switch. If the TCM thinks the brake is applied, it will assume a braking condition and select the appropriate gear for that mode. There is also a full throttle switch. If it is made constantly the TCM thinks the throttle if fully depressed (regardless of load).
Regarding your checks, the change in duty cycle at the load sensing input should give a slightly higher DC value. Wider pulse widths produce an effective increase in DC that a meter "sees". For instance, a 5V high and 0V low, at 50% duty, has an effective DC value of 2.5V. If the DC value shifts with load, that is confirmation that, if not correct, at least a change in load is producing a change in duty cycle. The value you see will depend on the meter you are using. The Fluke 88 is pretty fast and will read out close. A cheap meter may not give an accurate read out but should at least show some change.
The fact that you can see no change on the load sensing line is important. If I correctly understood that explanation of how the AW30 shifts, shifts are initiated by the TCM dependent upon the speed of the planetary gear. The TCM issues a request to the ECM to reduce torque (for smoother shifts) and awaits confirmation from the ECM that torque has been reduced (pulled the timing back?). It will then modulate pressure for the shift.
For that miss on #2 at idle, check for an air leak at the intake/head gasket.
Good luck and post the fix for this. I'm interested because I love puzzles. Someday I might own a 960 and it might come in handy. Man, I wish I had a copy of Vadis...
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Mr. Shannon DeWolfe -- I've taken to using mister because my name misleads folks on the WWW. I am a 53 year old fat man. ;-)
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960 AW 30 transmission shifting- desperate and frustrated. [900][1993]