B2600Sport

Hello there I have an 88 pathfinder with an automatic trans some of the wiring has been torn loose from the transmission (have not been able to find a wiring diagram that shows the shift solenoids) The person i bought it from said the trans worked fine and then there teenage daughter took it off road and now the trans will not shift into drive (you put the selector in drive and it shifts through 1st and 2nd then when it hits drive it is like you put it in nuetral) any thoughts of what to try would be greatly appreciated, THANKS