Mazda RX-8 2004-06

Refrigerant Pressure Check

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  1. Connect the manifold gauge, as outlined in this section.
  2.  
  3. Start the engine and after it is warmed up, run it at a constant 1,500 rpm.
  4.  
  5. Set the fan switch to 4th speed.
  6.  
  7. Turn the A/C switch on.
  8.  
  9. Set to RECIRCULATE mode.
  10.  
  11. Set the temperature control to MAX COLD.
  12.  
  13. Set to VENT mode.
  14.  
  15. Close all the doors and all the windows.
  16.  
  17. Measure the manifold gauge reading and ambient temperature.
  18.  
  19. Verify that the high and low pressure readings are within each shaded zone.

    Click image to see an enlarged view

    Fig. A/C system pressure check chart

  20.  

 
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