Pressure Switch: Removal

DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM (See REPLACEMENT )
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

HINT:

At the time of installation, perform initialization (see INITIALIZATION ).

NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
REMOVE PRESSURE SWITCH
1. Disconnect the connector and remove the pressure switch.
  Torque: 10 N*m (100 kgf*cm, 7 ft.*lbf)
  
  HINT:
  - Lock the switch mounted on the tube with an open end wrench, be careful not to deform the tube, and remove the pressure switch.
  - At the time of installation, lubricate a new O-ring with compressor oil and install the pressure switch.
    
    Fig 1: Removing Pressure Switch
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002