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 524 (REFRIGERANT SYSTEM [HVAC])REFRIGERANT 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 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- After servicing the refrigerant system, test its performance.
- Install the manifold gauge set. (See MANIFOLD GAUGE SET INSTALLATION .)
- Open the hood.
- Close all the doors and all the windows.
- Warm up the engine and run it at a constant 1,500 RPM.
- Turn the A/C switch on.
- Set the fan switch at 4th.
- Set the REC/FRESH lever to REC.
- Set the mode dial to VENT.
- Set the temperature control dial to MAX COLD.
- Measure the center ventilator temperature and record the temperature reading.
- Measure the ambient temperature and record the temperature reading.
- Verify that the temperature reading is in the shaded zone (maximum 6°C {43°F})
.
- If the performance is not within the shaded zone, troubleshoot the refrigerant system. (See FOREWORD .)
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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.