Refrigerant Pressure Switch Inspection

Install the manifold gauge set. (See MANIFOLD GAUGE SET INSTALLATION .)
Disconnect the refrigerant pressure switch connector.
Verify the high-pressure side reading of the manifold gauge and continuity between the terminals B and C, and A and D is as shown.
- If not as specified, replace the front cooler pipe No. 2.
  
  Fig 1: High And Low Pressure Switch Continuity/Pressure Specifications
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Middle Pressure Switch Continuity/Pressure Specifications
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 3: Identifying Pressure Switch Circuit & Connector Terminals
  Courtesy of MAZDA MOTORS CORP.