Chrysler Repair: 97 T&C Transmission: getting codes, obd ii code reader, chrysler town and country

Question
QUESTION: 1997 3.8 FWD Chrysler Town and Country Van. I replaced the Transmission and it still doesn't go into gear. Could it be the Control Module located on the transmission? I don't know what the codes are or how to bring them up, but before I go out and buy a very expensive Module, I would like to know if I can find out if it's bad.

ANSWER: Hi Dan,
There is a plug under the dash on the left of the steering wheel into which a code reader is inserted and that will bring up the 4-digit codes that may tell us what is wrong. Disconnect the battery for a minute or so and then reconnect and drive it around for few short trips before having the codes read. You can get a free readout at an Autozone parts store, or for under $40 at an independent shop. Tell me the numbers and we can go from there to see what is next. The trans codes in the model year can only be obtained via a plug-in reader.
Roland

---------- FOLLOW-UP ----------

QUESTION: Thanks for your quick response. I mentioned that the Van doesn't go into any gear. Driving is impossible. Would that indicate that the Control Module is bad or should I be looking somewhere else.

Answer
Was the torque converter also changed out?  If not then that may be the problem.
Under most situations the trans will engage and drive in 2nd gear because that is the default "limp mode" when something is wrong internally. But if the converter output turbine wouldn't turn that would cause a no movement. If there is no debris in the oil pans of the replacement trans, then you would want to remove the valve body of the transmission and clean/inspect its parts. Then check the pressures via the ports on the trans for the internal hydraulic pressure in the various circuits. If there is debris, then the trans has to be rebuilt.
I doubt it is the TCM. Is there anyone you can borrow an OBD-II code reader from? That would be the most efficient way to find out what is wrong.
Roland