Recover the refrigerant with a recovery/recycling/charging station.
Remove the bolt from the A/C line clamp (A).
Remove the blower unit.
Remove the bolt, then disconnect the A/C line (A) from the evaporator core and remove the O-rings (B).
Disconnect the connectors (A) from the evaporator temperature sensor and the blower resistor, then remove the connector clip (B). Remove the self-tapping screws, the expansion valve cover (C), and the seals (D).
Remove the bolts (A), the O-rings (B), the expansion valve (C) and the inlet and outlet lines (D) from the evaporator core (E). Be careful not to bend the lines.
Remove the bolts, O-rings (A) and the expansion valve (B) from the inlet and outlet lines (C).
Install the expansion valve in the reverse order of removal, and note these items:
Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the correct O-rings for HFC-134a (R-134a) to avoid leakage.
Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture absorption.
Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.
Make sure that there is no air leakage.
Charge the system.
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