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A/C System Performance

  1. Park vehicle out of direct sunlight. Open engine hood. Open front doors. Connect A/C pressure gauges to pressure ports. Measure relative humidity. Measure ambient air temperature.
  2. Move temperature control lever to coldest setting. Select vent mode. Select recirculated air. Insert a thermometer in center vent outlet. Turn A/C switch on, and set blower switch to highest speed. Run engine at 1500 RPM. Ensure no one is inside vehicle.
  3. After running A/C for 10 minutes, check temperature at center vent outlet. Check system pressures. If temperature and pressures match A/C system performance test chart, system is operating within range. See Fig 1 and Fig 2 .
Fig 1: A/C System Performance Test Chart (°F & psi)
G00030066Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: A/C System Performance Test Chart (°C & kg/cm2 )
G00030065Courtesy of AMERICAN HONDA MOTOR CO., INC.
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