How do you replace 97 tercel ac evaporator?

To replace the AC evaporator in a 1997 Toyota Tercel, first, disconnect the negative battery cable and discharge the AC system at a professional service center. Then, remove the dashboard and HVAC unit to access the evaporator. Detach the old evaporator from the HVAC unit, install the new one, and reassemble everything in reverse order. Finally, recharge the AC system and test for proper operation.