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 terminal B and C, and A and D is as shown.
- If there is any malfunction, replace the front cooler pipe No. 2.
  
  Fig 1: Verifying Continuity Between Terminal B And C In High And Low Pressure Switch
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Verifying Continuity Between Terminal A And D In Medium Pressure Switch
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 3: Connector Terminal Identification
  Courtesy of MAZDA MOTORS CORP.