Toyota Repair Problems? Ask a Mechanic for Answers ASAP
It looks like you change this heater core by accessing it through the hood but you need a machine to discharge the AC system before removing the evaporator case. Here are instructions to remove the evap case then the heater core should be behind it. Let me now if you have questions, thanks.
Is there a way to bypass the heater core without having to removing the air duct and evaporator case?