Refrigerant Pressure Switch Inspection

Install the manifold gauge set.
Disconnect the refrigerant pressure switch connector.
Verify the high- and low-pressure side reading of manifold gauge.
Check for continuity between terminals of the refrigerant pressure switch.
- If not as specified, replace the refrigerant pressure switch.
  
  Fig 1: Refrigerant Pressure Switch Specifications - HI
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Refrigerant Pressure Switch Specifications - LO
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 3: Identifying Refrigerant Pressure Switch Circuit & Connector View
  Courtesy of MAZDA MOTORS CORP.