System Performance Test

System Performance Test:

SYSTEM PERFORMANCE TEST
Prior to the performance test, a Functional test should be performed. Refer to Functional Test. Functional Test/Check

Tool Required:

- J 21213-A Four Jack-Dual Range Temperature Tester or Equivalent

1. Park vehicle inside or in a shaded area.

2. Open doors or windows to ventilate interior.

3. Vent engine exhaust if necessary.

4. Open hood and install high and low side pressure gages. Route lines over rear hood seal and tape gages to windshield for viewing.

5. Close hood.

6. Record ambient temperature at vehicle.

7. Record relative humidity. Use a psychrometer or consult local weather bureau.

IMPORTANT: Be sure to record relative humidity and ambient temperature conditions at time of test.

8. Close doors or windows.

9. Set mode control to "A/C" with blower control on high and temperature control on full cold.

10. Open A/C outlets.

11. Install J 21213-A or equivalent into right center A/C outlet.

12. Place transmission in "Park" or "Neutral".

13. Start engine, stabilize at 2000 rpm and start timer.

14. Run A/C system until outlet air reaches the lowest temperature (about 3 minutes).

15. Record outlet air temperature and high side and low side pressures.

16. Turn engine off and compare readings. Normally operating A/C systems should not exceed the levels shown in the accompanying table.