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Pressure Relief Valve Inspection

  1. Install the manifold gauge set.
  2. Start the engine.
  3. Turn the fan switch and A/C switch on.
  4. Verify the high-pressure side reading of the manifold gauge.
  5. Check for leaks from the pressure relief valve using a gas leak tester.
    • If not as specified, replace the cooler hose (HI).
      Fig 1: Pressure Relief Valve Specifications
      G01136462Courtesy of MAZDA MOTORS CORP.
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