Air Conditioning (A/C) System Performance Test. Cadillac SRX 2008

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2008 🢒 SRX 🢒 HVAC 🢒 HVAC - Automatic 🢒 Air Conditioning (A/C) System Performance Test

Air Conditioning (A/C) System Performance Test LH2 - Standard Cooling

Table 1:

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.

This step determines if the A/C system has at least the minimum refrigerant charge required 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 temperatures.

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 5 minutes.
Turn OFF the ignition.
Install the J 43600 ACR 2000 Air Conditioning Service Center.
Record the ambient air temperature displayed on the J 43600 .
Record the low and high side STATIC pressure readings.

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

More than 16°C (60°F) - 345 kPa (50 psi)

More than 24°C (75°F) - 483 kPa (70 psi)

More than 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 12.7-15.2 cm (5-6 in).
Select the following HVAC control settings:

•	The A/C is ON.

•	The maximum blower speed

•	The maximum blower speed selected on the auxiliary blower controls

•	Recirculation mode

•	The face mode

•	The coldest temperature setting

•	Passenger setting is OFF

•	All A/C outlets are OPEN

Install the temperature probes of the J 43600 in the left and right center A/C air outlets.
Apply the parking brake.
Place the transaxle/transmission in the following position: PARK.
Start the engine.
Operate the A/C system for 5 minutes.
Inspect A/C components for the following conditions:

•	Abnormal frost areas

•	Unusual noises

Important: Make sure that the compressor is engaged when taking the data.

Press the RESET button, before using the print function of the J 43600 .

Print 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 A/C Performance Table.

Does all the data recorded fall within the specified ranges of the A/C Performance Table?

Go to Step 8

Go to Step 3

If the pressures and temperatures recorded do not fall within the specified ranges of the A/C Performance Table:

Continue to operate the A/C system for an additional 5 minutes.
RESET the J 43600 and record the pressures and temperatures again.
Compare the low and high side pressures and the output temperature to the A/C Performance Table.

Does all the data recorded fall within the specified ranges?

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 greater than the specified range, but the high side pressure within or less 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 greater than the specified ranges?

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

Go to Step 7

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

A/C Performance Table -- With Rear A/C

Ambient Temperature	Relative Humidity	Low Side Service Port Pressure	High Side Service Port Pressure	Maximum Left Center Discharge Air Temperature	Maximum Left Side Rear Discharge Air Temperature
13-18°C (55-65°F)	0-100%	201-271 kPa (29-39 psi)	1448-1689 kPa (210-245 psi)	14°C (57°F)	16°C (61°F)
19-24°C (66-75°F)	Less than 40%	212-293 kPa (30-42 psi)	1489-1758 kPa (216-255 psi)	15°C (59°F)	17°C (63°F)
19-24°C (66-75°F)	Greater than 40%	224-299 kPa (32-43 psi)	1420-1591 kPa (206-231 psi)	16°C (61°F)	17°C (63°F)
25-29°C (76-85°F)	Less than 35%	248-316 kPa (36-45 psi)	1420-1655 kPa (206-240 psi)	17°C (63°F)	19°C (66°F)
	35-60%	248-316 kPa (36-45 psi)	1475-1661 kPa (214-241 psi)	17°C 63°F)	19°C (66°F)
	Greater than 60%	248-316 kPa (36-45 psi)	1386-1641 kPa (201-238 psi)	17°C (63°F)	19°C (66°F)
30-35°C (86-95°F)	Less than 30%	277-348 kPa (40-50 psi)	1565-1851 kPa (227-269 psi)	20°C (68°F)	21°C (70°F)
	30-50%	277-342 kPa (40-49 psi)	1631-1741 kPa (237-253 psi)	20°C (68°F)	21°C (70°F)
	Greater than 50%	276-333 kPa (39-48 psi)	1581-1772 kPa (229-257 psi)	19°C (66°F)	20°C (68°F)
36-41°C (96-105°F)	Less than 20%	316-384 kPa (45-55 psi)	1871-2061 kPa (271-299 psi)	23°C (73°F)	24°C (75°F)
	20-40%	304-373 kPa (44-53 psi)	1786-1931 kPa (259-280 psi)	22°C (72°F)	23°C (73°F)
	Greater than 40%	304-362 kPa (44-52 psi)	1669-1827 kPa (242-265 psi)	22°C (72°F)	23°C (73°F)
42-46°C (106-115°F)	Less than 20%	348-412 kPa (50-59 psi)	2051-2234 kPa (298-324 psi)	25°C (77°F)	26°C (79°F)
42-46°C (106-115°F)	Greater than 20%	342-396 kPa (49-57 psi)	1855-2096 kPa (269-304 psi)	24°C (75°F)	25°C (77°F)
47-49°C (116-120°F)	Less than 30%	373-420 kPa (53-60 psi)	2213-2489 kPa (321-361 psi)	26°C (79°F)	27°C (81°F)

A/C System Pressure - Zone Classification

Air Conditioning (A/C) System Performance Test LY7 - without C57 - Standard Cooling

Table 1:

A/C Performance Table

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.

This step determines if the A/C system has at least the minimum refrigerant charge required 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 temperatures.

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 5 minutes.
Turn OFF the ignition.
Install the J 43600 ACR 2000 Air Conditioning Service Center.
Record the ambient air temperature displayed on the J 43600 .
Record the low and high side STATIC pressure readings.

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

More than 16°C (60°F) - 345 kPa (50 psi)

More than 24°C (75°F) - 483 kPa (70 psi)

More than 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 12.7-15.2 cm (5-6 in).
Select the following HVAC control settings:

•	The A/C is ON.

•	The maximum blower speed

•	The maximum blower speed selected on the auxiliary blower controls

•	Recirculation mode

•	The Face mode

•	The coldest temperature setting

•	Passenger setting is OFF

•	All A/C outlets are OPEN

Install the temperature probes of the J 43600 in the left and right center A/C air outlets.
Apply the parking brake.
Place the transaxle/transmission in the following position: PARK.
Start the engine.
Operate the A/C system for 5 minutes.
Inspect A/C components for the following conditions:

•	Abnormal frost areas

•	Unusual noises

Important: Make sure that the compressor is engaged when taking the data.

Press the RESET button, before using the print function of the J 43600 .

Print 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 A/C Performance Table.

Does all the data recorded fall within the specified ranges of the A/C Performance Table?

Go to Step 8

Go to Step 3

If the pressures and temperatures recorded do not fall within the specified ranges of the A/C Performance Table:

Continue to operate the A/C system for an additional 5 minutes.
RESET the J 43600 and record the pressures and temperatures again.
Compare the low and high side pressures and the output temperature to the A/C Performance Table.

Does all the data recorded fall within the specified ranges?

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 greater than the specified range, but the high side pressure within or less 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 greater than the specified ranges?

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

Go to Step 7

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

A/C Performance Table

Ambient Temperature	Relative Humidity	Low Side Service Port Pressure	High Side Service Port Pressure	Maximum Left Center Discharge Air Temperature
13-18°C (55-65°F)	0-100%	150-186 kPa (22-27 psi)	640-1071 kPa (93-155 psi)	10°C (50°F)
19-24°C (66-75°F)	Less than 40%	150-191 kPa (22-28 psi)	710-1131 kPa (103-164 psi)	10°C (50°F)
19-24°C (66-75°F)	Greater than 40%	150-223 kPa (22-32 psi)	831-1291 kPa (120-187 psi)	13°C (55°F)
25-29°C (76-85°F)	Less than 35%	150-213 kPa (22-31 psi)	961-1301 kPa (139-189 psi)	13°C (55°F)
	35-60%	150-223 kPa (22-32 psi)	1207-1503 kPa (175-218 psi)	14°C (57°F)
	Greater than 60%	159-2450 kPa (23-36 psi)	1276-1600 kPa (185-232 psi)	16°C (61°F)
30-35°C (86-95°F)	Less than 30%	159-241 kPa (23-35 psi)	1151-1511 kPa (167-219 psi)	16°C (61°F)
	30-50%	169-253 kPa (25-37 psi)	1201-1571 kPa (174-228 psi)	17°C (63°F)
	Greater than 50%	183-271 kPa (27-39 psi)	1551-1793 kPa (225-260 psi)	19°C (66°F)
36-41°C (96-105°F)	Less than 20%	183-271 kPa (27-39 psi)	1361-1701 kPa (197-247 psi)	19°C (66°F)
	20-40%	191-277 kPa (28-40 psi)	1391-1761 kPa (202-255 psi)	20°C (68°F)
	Greater than 40%	207-288 kPa (30-42 psi)	1461-1831 kPa (212-266 psi)	21°C (70°F)
42-46°C (106-115°F)	Less than 20%	223-294 kPa (32-43 psi)	1591-1891 kPa (231-274 psi)	21°C (70°F)
42-46°C (106-115°F)	Greater than 20%	227-302 kPa (33-44 psi)	1621-1951 kPa (235-283 psi)	23°C (73°F)
47-49°C (116-120°F)	Below 30%	253-314 kPa (37-46 psi)	1811-2031 kPa (263-295 psi)	24°C (75°F)

A/C System Pressure - Zone Classification

Air Conditioning (A/C) System Performance Test LH2 - Heavy Duty Cooling

Table 1:

A/C Performance Table -- With Rear A/C

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.

This step determines if the A/C system has at least the minimum refrigerant charge required 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 temperatures.

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 5 minutes.
Turn OFF the ignition.
Install the J 43600 ACR 2000 Air Conditioning Service Center.
Record the ambient air temperature displayed on the J 43600 .
Record the low and high side STATIC pressure readings.

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

More than 16°C (60°F) - 345 kPa (50 psi)

More than 24°C (75°F) - 483 kPa (70 psi)

More than 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 12.7-15.2 cm (5-6 in).
Select the following HVAC control settings:

•	The A/C is ON.

•	The maximum blower speed

•	The maximum blower speed selected on the auxiliary blower controls

•	Recirculation mode

•	The Face mode

•	The coldest temperature setting

•	Passenger setting is OFF

•	All A/C outlets are OPEN

Install the temperature probes of the J 43600 in the left and right center A/C air outlets.
Apply the parking brake.
Place the transaxle/transmission in the following position: PARK.
Start the engine.
Operate the A/C system for 5 minutes.
Inspect A/C components for the following conditions:

•	Abnormal frost areas

•	Unusual noises

Important: Make sure that the compressor is engaged when taking the data.

Press the RESET button, before using the print function of the J 43600 .

Print 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 A/C Performance Table.

Does all the data recorded fall within the specified ranges of the A/C Performance Table?

Go to Step 8

Go to Step 3

If the pressures and temperatures recorded do not fall within the specified ranges of the A/C Performance Table:

Continue to operate the A/C system for an additional 5 minutes.
RESET the J 43600 and record the pressures and temperatures again.
Compare the low and high side pressures and the output temperature to the A/C Performance Table.

Does all the data recorded fall within the specified ranges?

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 greater than the specified range, but the high side pressure within or less 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 greater than the specified ranges?

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

Go to Step 7

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

A/C Performance Table -- With Rear A/C

Ambient Temperature	Relative Humidity	Low Side Service Port Pressure	High Side Service Port Pressure	Maximum Left Center Discharge Air Temperature	Maximum Left Side Rear Discharge Air Temperature
13-18°C (55-65°F)	0-100%	150-291 kPa (22-42 psi)	861-1491 kPa (125-216 psi)	15°C (59°F)	17°C (63°F)
19-24°C (66-75°F)	Less than 40%	150-277 kPa (22-40 psi)	951-1571 kPa (138-228 psi)	15°C (59°F)	17°C (63°F)
19-24°C (66-75°F)	Greater than 40%	191-334 kPa (26-46 psi)	1151-1791 kPa (167-260 psi)	17°C (63°F)	19°C (66°F)
25-29°C (76-85°F)	Less than 35%	201-309 kPa (29-45 psi)	1351-1831 kPa (196-266 psi)	15°C (59°F)	17°C (63°F)
	35-60%	229-326 kPa (33-47 psi)	1461-1911 kPa (212-277 psi)	16°C (61°F)	18°C (64°F)
	Greater than 60%	245-361 kPa (36-52 psi)	1551-2051 kPa (225-298 psi)	19°C (66°F)	21°C (70°F)
30-35°C (86-95°F)	Less than 30%	245-351 kPa (36-51 psi)	1661-2161 kPa (241-313 psi)	18°C (64°F)	20°C (68°F)
	30-50%	263-369 kPa (38-54 psi)	1731-2242 kPa (251-325 psi)	19°C (66°F)	21°C (70°F)
	Greater than 50%	291-395 kPa (42-57 psi)	1831-2352 kPa (266-341 psi)	21°C (70°F)	23°C (73°F)
36-41°C (96-105°F)	Less than 20%	294-395 kPa (43-57 psi)	2011-2492 kPa (292-361 psi)	22°C (72°F)	24°C (75°F)
	20-40%	303-405 kPa (44-59 psi)	2051-2552 kPa (298-370 psi)	22°C (72°F)	24°C (75°F)
	Greater than 40%	320-416 kPa (46-60 psi)	2121-2602 kPa (308-377 psi)	23°C (73°F)	25°C (77°F)
42-46°C (106-115°F)	Less than 20%	349-437 kPa (51-63 psi)	2382-2827 kPa (345-410 psi)	25°C (77°F)	28°C (82°F)
42-46°C (106-115°F)	Greater than 20%	349-443 kPa (51-64 psi)	2412-2861 kPa (350-415 psi)	25°C (77°F)	27°C (81°F)
47-49°C (116-120°F)	Less than 30%	397-465 kPa (58-67 psi)	2620-2861 kPa (380-415 psi)	27°C (81°F)	29°C (84°F)

A/C System Pressure - Zone Classification

Air Conditioning (A/C) System Performance Test LY7 - with C57 - Heavy Duty Cooling

Table 1:

A/C Performance Table -- With Rear A/C

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.

This step determines if the A/C system has at least the minimum refrigerant charge required 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 temperatures.

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 5 minutes.
Turn OFF the ignition.
Install the J 43600 ACR 2000 Air Conditioning Service Center.
Record the ambient air temperature displayed on the J 43600 .
Record the low and high side STATIC pressure readings.

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

More than 16°C (60°F) - 345 kPa (50 psi)

More than 24°C (75°F) - 483 kPa (70 psi)

More than 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 12.7-15.2 cm (5-6 inches).
Select the following HVAC control settings:

•	The A/C is ON.

•	The maximum blower speed

•	The maximum blower speed selected on the auxiliary blower controls

•	Recirculation mode

•	The Face mode

•	The coldest temperature setting

•	Passenger setting is OFF

•	All A/C outlets are OPEN

Install the temperature probes of the J 43600 in the left and right center A/C air outlets.
Apply the parking brake.
Place the transaxle/transmission in the following position: PARK.
Start the engine.
Operate the A/C system for 5 minutes.
Inspect A/C components for the following conditions:

•	Abnormal frost areas

•	Unusual noises

Important: Make sure that the compressor is engaged when taking the data.

Press the RESET button, before using the print function of the J 43600 .

Print 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 A/C Performance Table.

Does all the data recorded fall within the specified ranges of the A/C Performance Table?

Go to Step 8

Go to Step 3

If the pressures and temperatures recorded do not fall within the specified ranges of the A/C Performance Table:

Continue to operate the A/C system for an additional 5 minutes.
RESET the J 43600 and record the pressures and temperatures again.
Compare the low and high side pressures and the output temperature to the A/C Performance Table.

Does all the data recorded fall within the specified ranges?

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 greater than the specified range, but the high side pressure within or less 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 greater than the specified ranges?

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

Go to Step 7

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

A/C Performance Table -- With Rear A/C

Ambient Temperature	Relative Humidity	Low Side Service Port Pressure	High Side Service Port Pressure	Maximum Left Center Discharge Air Temperature	Maximum Left Side Rear Discharge Air Temperature
13-18°C (55-65°F)	0-100%	165-266 kPa (24-38 psi)	1211-1561 kPa (176-226 psi)	13°C (55°F)	14°C (57°F)
19-24°C (66-75°F)	Less than 40%	173-281 kPa (25-40 psi)	1371-1751 kPa (199-254 psi)	13°C (55°F)	14°C (57°F)
19-24°C (66-75°F)	Greater than 40%	200-312 kPa (29-45 psi)	1421-1811 kPa (206-263 psi)	16°C (61°F)	16°C (61°F)
25-29°C (76-85°F)	Less than 35%	221-311 kPa (32-45 psi)	1631-1951 kPa (237-283 psi)	15°C (59°F)	16°C (61°F)
	35-60%	236-321 kPa (34-46 psi)	1661-1971 kPa (241-286 psi)	16°C (61°F)	17°C (63°F)
	Greater than 60%	248-343 kPa (36-49 psi)	1681-2011 kPa (244-292 psi)	18°C (64°F)	18°C (64°F)
30-35°C (86-95°F)	Less than 30%	256-350 kPa (37-50 psi)	1841-2191 kPa (267-318 psi)	18°C (64°F)	19°C (66°F)
	30-50%	268-361 kPa (38-52 psi)	1861-2222 kPa (270-322 psi)	19°C (66°F)	20°C (68°F)
	Greater than 50%	281-379 kPa (40-54 psi)	1891-2262 kPa (274-328 psi)	21°C (70°F)	21°C (70°F)
36-41°C (96-105°F)	Less than 20%	297-386 kPa (43-55 psi)	2081-2432 kPa (302-353 psi)	21°C (70°F)	22°C (72°F)
	20-40%	303-396 kPa (43-57 psi)	2091-2452 kPa (303-356 psi)	22°C (72°F)	23°C (73°F)
	Greater than 40%	315-405 kPa (45-58 psi)	2121-2482 kPa (308-360 psi)	23°C (73°F)	23°C (73°F)
42-46°C (106-115°F)	Less than 20%	342-423 kPa (49-61 psi)	2332-2632 kPa (338-382 psi)	24°C (75°F)	25°C (77°F)
42-46°C (106-115°F)	Greater than 20%	346-430 kPa (49-62 psi)	2352-2662 kPa (341-386 psi)	25°C (77°F)	25°C (77°F)
47-49°C (116-120°F)	Less than 30%	382-447 kPa (55-64 psi)	2552-2861 kPa (370-415 psi)	26°C (79°F)	27°C (81°F)

A/C System Pressure - Zone Classification