What will cause an automatic trans in a 92 Toyota Paseo to only shift into reverse and neutral and not drive?

If a 1992 Toyota Paseo's automatic transmission is only shifting into reverse and neutral but not drive, it may indicate a problem with the Transmission Fluid level or condition, such as being low or contaminated. Additionally, issues with the transmission linkage, a faulty valve body, or internal transmission problems like worn clutches or bands could also be the cause. It's advisable to check the transmission fluid first and then consult a mechanic for a thorough diagnosis.