How does ECU control the A/T box?

[Reconstructor]

Maybe it is too much to ask, but whatever, if somebody does know, i will be grateful if he share his knowledge.
From Pinout PDF for the AT box ECU, I see there is 5 solenoid valves:
UD Solenoid valve
OD Solenoid valve
DCC Solenoid valve
2ND Solenoid Valve
LR Solenoid valve

What job each one does?

[Davezj]

There is an automatic transmission manual for the 4 speed auto used in the v6 in the library somewhere and that has a complete strip and rebuild guide in it and also I seem to remember it has an operating proceedure at the start of it.
I can't be 100% sure but I think it is in there.

[Wodjno]

UD controls the Underdrive clutch
OD controls the OD Clutch
DCC controls the Damper clutch
LR controls the Low and Reverse clutches


And 2nd Solenoid Valve ? I have no idea

[Reconstructor]

Thanks Wodjno, now has to understand what all those clutches are used for