Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 232 (HVAC SYSTEM)REFRIGERANT SYSTEMREFRIGERANT SYSTEM PERFORMANCE TEST
2010 Mazda 5 Sport, 2.3 L, Standard
Refrigerant System Performance Test
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Refrigerant System Performance Test
WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the refrigerant pressure. (See REFRIGERANT PRESSURE CHECK .)
- Place a dry-bulb thermometer in the driver-side center ventilator outlet.
- Start the engine and after it is warmed up, run it at a constant 1,500 rpm.
- Set the fan switch to 4th speed.
- Turn the A/C switch on.
- Set to RECIRCULATE mode.
- Set the temperature control to MAX COLD.
- Set to VENT mode.
- Close all the doors and windows.
- Wait until the air conditioner output temperature stabilizes.
Stabilized condition
- The A/C compressor repeatedly turns on and off at regular intervals.
- After the blower air is stabilized, read the dry-bulb thermometer.
- Verify the ambient temperature.
- Verify that the temperature reading is in the shaded zone.
- If the there is any malfunction, inspect the refrigerant system according to the troubleshooting chart.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.