Refrigerant System Performance Test
WARNING: This page is about a different car, the 2004 Mazda MPV. 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.