Disconnect the negative (-) battery terminal.
Recover the refrigerant with a recovery/charging station.
Disconnect the dual pressure switch connector (3P) (A).
Torque:
10~12 N.m (1.0~1.2 kgf.m, 7.4~8.8 lb-ft)
Take care that liquid & suction pipe are not bent.
Installation is the reverse order of removal.