Refrigerant System Performance Test

1. Perform refrigerant charge check and refrigerant pressure check.
- If not as specified, troubleshoot refrigerant system.
- If they are correct, go to the next step.

2. Place a dry-bulb thermometer in the driver-side center ventilator outlet.
3. Open the hood.
4. Warm up the engine and run it at a constant 1,500 rpm.
5. Set the fan switch at 4th position.
6. Turn the A/C switch on.
7. Set the RECIRCULATE mode.
8. Set the temperature control to MAX COLD.
9. Set the VENT mode.
10. Close all the doors and all the windows.
11. Wait until the center ventilator temperature stabilizes. The output temperature is stable when the A/C compressor is repeatedly turned on and off based on the A/C compressor control of thermoswitch.
12. Measure the center ventilator temperature.
13. Measure the ambient temperature.




14. Verify that the intersection of the center ventilator temperature and the ambient temperature is in the shaded zone.
- If not as specified, troubleshoot the refrigerant system.