Air Conditioning (A/C) System Performance Test. Oldsmobile Aurora 2001

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 2001 🢒 Aurora 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Air Conditioning (A/C) System Performance Test

Table 1:	A/C Performance Table (LX5)
Table 2:	A/C Performance Table (L47)

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

This step determines if there is enough refrigerant in the A/C system in order to operate the system without damage.

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

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

Step

Action

Value(s)

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.

DEFINITION: the following test measures the A/C system operating efficiency by comparing:

•	The ambient air temperature

•	The ambient air humidity

•	The pressure at the high-pressure side of the refrigeration system

•	The pressure at the low-pressure side of the refrigeration system

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

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 (about 2 minutes).
Ensure that the ignition key is in the OFF position.
Install the J 43600 .
Record the ambient air temperature displayed on the J 43600 .
Record readings of the low and high side STATIC pressures.

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

Above 16°C (60°F) - 345 kPa (50 psi)

Above 24°C (75°F) - 483 kPa (70 psi)

Above 33°C (90°F) - 690 kPa (100 psi)

Go to Step 2

Go to Leak Testing

Important: Record the relative humidity and the ambient air temperature AT THE TIME OF THE TEST.

Close the vehicle doors and windows.
Open the driver door window 5-6 inches.
Set the HVAC control to the following positions:

•	The A/C on

•	The blower control to the highest position

•	The HVAC control assembly to discharge air through the A/C outlets

•	The temperature control to the coldest position

•	All A/C outlets OPEN

Install the temperature probes of the J 43600 into the left and right center A/C air outlets.
Apply the parking brake.
Place the transaxle/transmission in one of the following positions:

•	PARK (Automatic)

•	NEUTRAL (Manual)

Start the engine and allow to idle.
Operate the A/C system for 5 minutes.
Inspect for the following:

•	Abnormal frost areas

•	Unusual noises

Important: In order to capture the correct information, press the RESET button of the J 43600 before pressing the PRINT button after the 5 minute operating time.

Record the following information:

•	The outlet air temperatures

•	The low-side pressure

•	The high-side pressure

Compare the low and high side pressures and the output temperatures to the table below.

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

Go to Step 4

Go to Step 3

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

Confirm the orfice valve is operating properly. Refer to Dual-Stage Orifice Malfunction in HVAC System Automatic
Continue to operate the A/C system for an additional 5 minutes.
Record the pressures and temperatures again.
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 outlet temperatures do not?

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone A

Go to Step 5

Is the low side pressure higher than the specified range and the high side pressure within or lower than the specified range?

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone B

Go to Step 6

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

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone C

Go to Step 7

Is the low side pressure within or lower than the specified range and the high side pressure higher than the specified range?

Go to Air Conditioning (A/C) Diagnostics - Pressure Zone D

Go to Step 8

Operate the system in order to verify the test results.

Did you find the same results?

System OK

Go to Symptoms - HVAC Systems - Automatic in HVAC Systems - Automatic

A/C Performance Table (LX5)

Ambient Temperature	Relative Humidity	Service Port Pressure		Maximum Left Center Discharge Air Temperature
Ambient Temperature	Relative Humidity	Low Side	High Side	Maximum Left Center Discharge Air Temperature
16°C (60°F)	0-100%	165-207 kPa (24-30 psi)	1089-1296 kPa (158-188 psi)	9°C (49°F)
21°C (70°F)	Below 40%	172-214 kPa (25-31 psi)	1151-1358 kPa (167-197 psi)	10°C (50°F)
21°C (70°F)	Above 40%	193-234 kPa (28-34 psi)	876-1083 kPa (127-157 psi)	12°C (53°F)
27°C (80°F)	Below 35%	172-214 kPa (25-31 psi)	1020-1227 kPa (148-178 psi)	11°C (51°F)
	35-60%	179-221 kPa (26-32 psi)	1007-1214 kPa (146-176 psi)	11°C (52°F)
	Above 60%	228-269 kPa (33-39 psi)	1255-1462 kPa (182-212 psi)	14°C (57°F)
32°C (90°F)	Below 30%	207-248 kPa (30-36 psi)	1110-1317 kPa (161-191 psi)	13°C (55°F)
32°C (90°F)	Above 30%	228-269 kPa (33-39 psi)	1193-1400 kPa (173-203 psi)	14°C (58°F)
38°C (100°F)	Below 20%	207-262 kPa (31-41 psi)	1255-1531 kPa (182-222 psi)	14°C (57°F)
	20-40%	214-296 kPa (33-43 psi)	1310-1586 kPa (190-230 psi)	15°C (59°F)
	Above 40%	248-317 kPa (36-46 psi)	1351-1627 kPa (196-236 psi)	17°C (62°F)
43°C (110°F)	Below 20%	255-324 kPa (37-47 psi)	1503-1779 kPa (218-258 psi)	17°C (63°F)
43°C (110°F)	Above 20%	310-379 kPa (45-55 psi)	1538-1813 kPa (223-263 psi)	22°C (71°F)
49°C (120°F)	Below 30%	345-414 kPa (50-60 psi)	1800-2075 kPa (261-301 psi)	24°C (75°F)

A/C Performance Table (L47)

Ambient Temperature	Relative Humidity	Service Port Pressure		Maximum Left Center Discharge Air Temperature
Ambient Temperature	Relative Humidity	Low Side	High Side	Maximum Left Center Discharge Air Temperature
16°C (60°F)	0-100%	214-255 kPa (31-37 psi)	703-910 kPa (102-132 psi)	7°C (45°F)
21°C (70°F)	Below 40%	228-269 kPa (33-39 psi)	903-1110 kPa (131-161 psi)	11°C (51°F)
21°C (70°F)	Above 40%	248-290 kPa (36-42 psi)	952-1158 kPa (138-168 psi)	11°C (51°F)
27°C (80°F)	Below 35%	225-296 kPa (37-43 psi)	1027-1234 kPa (149-179 psi)	12°C (53°F)
	35-60%	276-317 kPa (40-46 psi)	1103-1310 kPa (160-190 psi)	13°C (56°F)
	Above 60%	296-338 kPa (43-49 psi)	1131-1338 kPa (164-194 psi)	15°C (59°F)
32°C (90°F)	Below 30%	303-345 kPa (44-50 psi)	1282-1489 kPa (186-216 psi)	16°C (60°F)
	35-60%	338-379 kPa (49-55 psi)	1365-1572 kPa (198-228 psi)	18°C (64°F)
	Above 60%	352-393 kPa (51-57 psi)	1372-1579 kPa (199-229 psi)	19°C (66°F)
38°C (100°F)	Below 30%	345-414 kPa (50-60 psi)	1469-1744 kPa (213-253 psi)	19°C (67°F)
38°C (100°F)	Above 30%	379-448 kPa (55-65 psi)	1551-1827 kPa (225-265 psi)	22°C (71°F)
43°C (110°F)	Below 15%	365-434 kPa (53-63 psi)	1600-1875 kPa (232-272 psi)	21°C (70°F)
	15-25%	407-476 kPa (59-69 psi)	1719-1993 kPa (249-289 psi)	23°C (73°F)
	Above 25%	414-483 kPa (60-70 psi)	1751-2027 kPa (254-294 psi)	24°C (76°F)
49°C (120°F)	Below 30%	421-490 kPa (61-71 psi)	1910-2186 kPa (277-317 psi)	23°C (74°F)