well lets guide you in the right direction
this code 524264-14 has to do with the transmission signal to its respective computer
according to the code chart it has to do with a sensor signal malfunction on the transmission, either no signal or intermittant signal from TISS, TOSS1, or TOSS2
or could be a clutch pack slipping or out of calibration.

you can check the respective wiring from the transmission sensors and see if there are any loose or broken wires.
anything beyond that you will most likely need a laptop to monitor whats going on and troubleshoot it from there, or buy a service manual as was mentioned previously.

good luck