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