System Performance Test - Temp and Pressure Relationships

TEST CONDITION
1. Vehicle should be located in a shaded, well ventilated area.
2. Close all doors and leave drivers window open.
3. Open vehicle hood and connect gauge set to A/C system.

Test Reading Ambient Temperature:

4. Insert a thermometer in the vent outlet, then determine relative humidity and ambient air temperature.
5. Set up ACTIVE-TEST with CONSULT and set each component as follows:
a. Set mode door to "VENT."
b. Set intake door to "REC."
c. Set air mix door to "FULL-COLD."
d. Set compressor to "ON."
e. Set blower motor to mid-speed.
f. Set up self diagnosis step 2 and set code No. "66."
6. Start engine and run at 1500 RPM for at least 10 minutes.

Performance Chart:

7. Compare discharge air temperature, high pressure reading and low pressure reading with the charts.