Air Conditioning (A/C) System Performance Test

Air Conditioning (A/C) System Performance Test

Special Tools

* GE-48800 - CoolTech A/C Recharge Machine

* J 43600 - ACR 2000 Air Conditioning Service Center

For equivalent regional tools, refer to Special Tools Heating, Ventilation, and Air Conditioning.

Test Description

This test measures the operating efficiency of the A/C system under the following conditions:

* The current ambient air temperature

* The current relative humidity

* The high side pressure of the A/C system

* The low side pressure of the A/C system

* The temperature of the air being discharged into the passenger compartment

The numbers below refer to the step numbers on the diagnostic table.

1.

This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system without damage.

2.

This step measures the performance of the A/C system.

3.

This step is to allow for vehicle variations as well as high ambient temperatures.