A/C System Performance Test - HVAC System - Automatic

AIR CONDITIONING (A/C) SYSTEM PERFORMANCE TEST

TEST DESCRIPTION

Step 1:

Step 2:

Step 3-5:

Step 6-8:

The following test measures the A/C system under the following conditions:
- The current ambient air temperature
- The current ambient air 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 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.