Air Conditioning (A/C) System Performance Test. Chevrolet Captiva 2007

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2007 🢒 Captiva 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Conditioning (A/C) System Performance Test

Air Conditioning (A/C) System Performance Test Auxiliary

Table 1:

A/C Performance Table with Aux A/C

Auxiliary Air Conditioning System Performance Test.

Step

Action

Values

Yes

Important:

•	The ambient air temperature must be at least 16°C (60°F).

•	Do not induce additional air flow across the front of the vehicle during the test.

•	If you were sent here from a DTC diagnostic table, clear the DTC upon completion of this test.

Park the vehicle inside or in the shade.
Open the windows in order to ventilate the interior of the vehicle.
If the A/C system was operating, allow the A/C system to equalize for about 2 minutes.
Ignition OFF.
Connect and calibrate High/low pressure gauges.
Record the ambient air temperature.
Record the low and high side STATIC pressure readings.

Are both the low and high side pressures within the specified value?

•	Greater than 16°C (60°F), 384 kPa (55 psi)

•	Greater than 24°C (75°F), 567 kPa (82 psi)

•	Greater than 33°C (90°F), 785 kPa (113 psi)

Go to Step 2

Go to Refrigerant Recovery and Recharging. Refrigerant Recovery and Recharging

Important: Record the relative humidity and the ambient air temperature at the time of the test.

Close the vehicle doors and windows.
Open the rear windows 127-152 mm (5-6 in).
Select the following HVAC control settings:

•	The A/C ON.

•	Set the A/C to the coldest setting

•	Set the blower speed to maximum

•	Set the I/P to panel outlet mode

•	All I/P panel outlets are OPEN

•	Set A/C to Recirculation mode.

Install the temperature probes to one of the auxiliary air conditioning outlets.
Activate the auxiliary HVAC system via the I/P mounted switch.
Turn auxiliary blower motor speed to maximum.
Apply the parking brake.
Place the transaxle/transmission in one of the following positions:

•	PARK for Automatic

•	NEUTRAL for Manual

Start the engine.
Operate the A/C system for 5 minutes.
Inspect all A/C components for the following conditions:

•	Abnormal frost areas

•	Unusual noises

Observe the following information:

•	The auxiliary air conditioning outlet air temperature

•	The low-side pressure

•	The high-side pressure.

Compare the low and high side pressures and the auxiliary air conditioning outlet temperatures to the table below.

Does all the data recorded fall within the specified ranges of the table below?

Go to Step 8

Go to Step 3

If the pressures and temperatures recorded do not fall within the specified ranges:

Continue to operate the A/C system for an additional 5 minutes.
Compare the low and high side pressures and the output temperature to the table below.

Does all the data recorded fall within the specified ranges of the table below?

Go to Step 8

Go to Step 4

Do the high and low side pressures fall within the specified ranges but the panel outlet temperatures do not?

Go to Symptoms-HVAC Symptoms - HVAC Systems - Automatic

Go to Step 5

Is the low side pressure greater than the specified range but the high side pressure within or less than the specified range?

Go to Symptoms-HVAC Symptoms - HVAC Systems - Automatic

Go to Step 6

Are the low and high side pressures both greater than the specified ranges?

Go to Symptoms-HVAC Symptoms - HVAC Systems - Automatic

Go to Step 7

Is the high side pressure greater than the specified range, but the low side pressure is within or less than the specified range?

Go to Symptoms-HVAC Symptoms - HVAC Systems - Automatic

Go to Step 8

Operate the system in order to verify the test results.

Did you find the same results?

System OK

Go to Step 1 Symptoms - HVAC Systems - Automatic

A/C System Pressure - Zone Classification with Aux A/C

A/C Performance Table with Aux A/C

Ambient Air Temperature	Relative Humidity	Service Port Pressure		Maximum Discharge Air Temperature
Ambient Air Temperature	Relative Humidity	Low Side	High Side	Left Front Center	Left Rear
13-18°C (55-65°F)	0-100%	151-220 kPa (22-32 psi)	537-937 kPa (78-136 psi)	5°C (41°F)	7°C (45°F)
19-24°C (66-75°F)	Below 40%	151-248 kPa (22-36 psi)	689-1109 kPa (100-161 psi)	8°C (46°F)	10°C (50°F)
19-24°C (66-75°F)	Above 40%	151-282 kPa (22-41 psi)	757-1178 kPa (110-171 psi)	10°C (50°F)	12°C (54°F)
25-29°C (76-85°F)	Below 35%	186-289 kPa (27-42 psi)	978-1322 kPa (142-192 psi)	11°C (52°F)	13°C (55°F)
	35-50%	206-303 kPa (30-44 psi)	1019-1336 kPa (148-194 psi)	12°C 54°F)	14°C (57°F)
	Above 50%	213-323 kPa (31-47 psi)	1040-1378 kPa (151-200 psi)	14°C (57°F)	16°C (61°F)
30-35°C (86-95°F)	Below 30%	234-337 kPa (34-49 psi)	1212-1577 kPa (176-229 psi)	15°C (59°F)	18°C (64°F)
	30-50%	248-351 kPa (36-51 psi)	1233-1598 kPa (179-232 psi)	17°C (63°F)	19°C (66°F)
	Above 50%	261-372 kPa (38-54 psi)	1260-1619 kPa (183-235 psi)	19°C (66°F)	21°C (70°F)
36-41°C (96-105°F)	Below 20%	289-385 kPa (42-56 psi)	1488-1853 kPa (216-269 psi)	19°C (66°F)	21°C (70°F)
	20-40%	296-399 kPa (43-58 psi)	1488-1853 kPa (216-269 psi)	21°C (70°F)	23°C (73°F)
	Above 40%	310-413 kPa (45-60 psi)	1508-1853 kPa (219-269 psi)	22°C (72°F)	24°C (75°F)
42-46°C (106-115°F)	Below 20%	344-434 kPa (50-63 psi)	1770-2080 kPa (257-302 psi)	23°C (73°F)	25°C (77°F)
42-46°C (106-115°F)	Above 20%	351-447 kPa (51-65 psi)	1770-2067 kPa (257-300 psi)	24°C (75°F)	27°C (81°F)
47-49°C (116-120°F)	Below 30%	392-482 kPa (57-70 psi)	1998-2301 kPa (290-334 psi)	27°C (81°F)	28°C (82°F)