Toyota 88515-20100 Valve, Cooler Expansion

Have the air conditioning system discharged. Disconnect the negative cable from the battery. If the stereo in your vehicle is equipped with an anti-theft system, make sure you have the correct activation code before disconnecting the battery. Remove the glove compartment assembly. Disconnect the air conditioning lines at the firewall. Cap the open fittings after disassembly to prevent the entry of air or dirt. Remove the ECM. Remove nuts and screws retaining the evaporator unit to the firewall and pull the unit out of the vehicle. With the evaporator unit on the bench, remove the screws and clips and separate the top and bottom halves of the case and pull out the evaporator. Pull the thermistor sensor probe from the evaporator core and unbolt the expansion valve and the two short refrigerant lines. The evaporator core can be cleaned with a "fin comb" and blown off with compressed air. If the evaporator core is replaced with a new unit, add 1.4 ounces of new refrigerant oil of the correct type (for R-134a systems) to the system. The remainder of the installation is the reverse of the removal process. Be sure to use new O-rings, and new gaskets on the expansion valve. Have the system evacuated, charged and leak tested by the shop that discharged it.

To remove the refrigerant from a vehicle's air conditioning system, it is recommended to have it discharged at a dealer service department or an automotive air conditioning repair facility. Before starting the removal process, disconnect the battery cable from the negative battery terminal, ensuring you have the correct activation code for the stereo if it has an anti-theft system. In the engine compartment, disconnect the refrigerant lines from the evaporator, using a backup wrench to avoid damaging the lines. Cap the open fittings immediately to prevent dirt and moisture from entering, and remove the inlet and outlet grommets. Remove the glove box and lower trim panel, followed by the Blower Motor and air conditioning amplifier from the cooling unit. Disconnect all electrical connectors and tubing, remove the mounting nuts and bolts, and pull the unit free. To remove the evaporator and A/C Expansion Valve, disconnect all connectors, unfasten the retaining clips, and remove the retaining screws. Check the evaporator fins for blockage and clean them with compressed air if necessary. Inspect fittings for cracks and wear, replacing any parts as needed. For installation, follow the reverse of the removal procedure, ensuring to replace all O-rings with new ones. If a new evaporator was installed, add the appropriate amount of refrigerant oil to the system. Finally, have the system evacuated, charged, and leak tested by a professional shop.

After disconnecting the battery, the glove compartment assembly needs to be removed.