Air Conditioning (A/C) System Performance Test. Saturn VUE

For 1990-2009 cars only

Makes 🢒 Saturn 🢒 2008 🢒 VUE - FWD 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Conditioning (A/C) System Performance Test

Air Conditioning (A/C) System Performance Test LY7

Table 1:

A/C Performance Table

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

Test Description

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 2 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 within 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 coldest temperature setting

•	The maximum blower speed

•	Recirculation mode

•	The instrument panel (I/P) outlet mode

•	All I/P outlets are OPEN

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

•	PARK (Automatic)

•	NEUTRAL (Manual)

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

Print the following information:

•	The panel outlet air temperatures

•	The low-side pressure

•	The high-side pressure

Compare the low and high side pressures and the panel output temperatures to the A/C performance table below.

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:

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 panel output temperature 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 4

Do the high and low side pressures fall within the specified ranges, but the panel 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 the specified range, but the low side pressure is within or 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 - Manual

A/C System Pressure - Zone Classification

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%	151-186 kPa (22-27 psi)	1088-1570 kPa (158-228 psi)	8°C (46°F)
19-24°C (66-75°F)	Below 40%	151-241 kPa (22-35 psi)	1198-1688 kPa (174-245 psi)	9°C (48°F)
19-24°C (66-75°F)	Above 40%	151-254 kPa (22-37 psi)	1329-1853 kPa (193-269 psi)	13°C (55°F)
25-29°C (76-85°F)	Below 35%	192-282 kPa (22-37 psi)	1446-1901 kPa (210-276 psi)	13°C (54°F)
	35-50%	199-289 kPa (29-42 psi)	1591-1956 kPa (231-284 psi)	14°C (57°F)
	Above 50%	206-310 kPa (35-45 psi)	1646-2080 kPa (239-302 psi)	18°C (63°F)
30-35°C (86-95°F)	Below 30%	227-323 kPa (33-47 psi)	1750-2170 kPa (254-315 psi)	17°C (61°F)
	30-50%	241-344 kPa (35-50 psi)	1812-2253 kPa (263-327 psi)	18°C (64°F)
	Above 50%	248-372 kPa (36-54 psi)	1880-2363 kPa (273-343 psi)	23°C (72°F)
36-41°C (96-105°F)	Below 20%	268-358 kPa (39-52 psi)	2011-2480 kPa (292-360 psi)	19°C (66°F)
	20-40%	275-385 kPa (40-56 psi)	2053-2487 kPa (298-361 psi)	23°C (72°F)
	Above 40%	296-413 kPa (43-60 psi)	2129-2569 kPa (309-373 psi)	24°C (75°F)
42-46°C (106-115°F)	Below 20%	310-399 kPa (45-58 psi)	2301-2652 kPa (334-385 psi)	23°C (73°F)
42-46°C (106-115°F)	Above 20%	316-427 kPa (46-62 psi)	2328-2728 kPa (338-396 psi)	25°C (77°F)
47-49°C (116-120°F)	Below 30%	358-454 kPa (52-66 psi)	2569-2921 kPa (373-424 psi)	28°C (82°F)

Air Conditioning (A/C) System Performance Test LZ4

Table 1:

A/C Performance Table

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

Test Description

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 2 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 within 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 coldest temperature setting

•	The maximum blower speed

•	Recirculation mode

•	The instrument panel (I/P) outlet mode

•	All I/P outlets are OPEN

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

•	PARK (Automatic)

•	NEUTRAL (Manual)

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

Print the following information:

•	The panel outlet air temperatures

•	The low-side pressure

•	The high-side pressure

Compare the low and high side pressures and the panel output temperatures to the A/C performance table below.

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:

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 panel output temperature 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 4

Do the high and low side pressures fall within the specified ranges, but the panel 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 the specified range, but the low side pressure is within or 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 - Manual

A/C System Pressure - Zone Classification

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%	151-192 kPa (22-28 psi)	950-1440 kPa (138-209 psi)	8°C (46°F)
19-24°C (66-75°F)	Below 40%	158-220 kPa (23-32 psi)	1012-1488 kPa (147-216 psi)	10°C (50°F)
19-24°C (66-75°F)	Above 40%	151-227 kPa (22-33 psi)	1157-1688 kPa (168-245 psi)	13°C (54°F)
25-29°C (76-85°F)	Below 35%	179-248 kPa (26-36 psi)	1228-1681 kPa (187-244 psi)	13°C (55°F)
	35-50%	186-254 kPa (27-37 psi)	1391-1750 kPa (202-254 psi)	14°C (57°F)
	Above 50%	186-268 kPa (27-39 psi)	1460-1887 kPa (212-274 psi)	17°C (61°F)
30-35°C (86-95°F)	Below 30%	199-275 kPa (29-40 psi)	1508-1908 kPa (219-277 psi)	17°C (61°F)
	30-50%	206-289 kPa (30-42 psi)	1577-1998 kPa (229-290 psi)	18°C (64°F)
	Above 50%	213-216 kPa (31-46 psi)	1667-2129 kPa (242-309 psi)	21°C (70°F)
36-41°C (96-105°F)	Below 20%	220-296 kPa (32-43 psi)	1750-2129 kPa (254-309 psi)	18°C (64°F)
	20-40%	234-316 kPa (34-46 psi)	1791-2211 kPa (260-321 psi)	20°C (68°F)
	Above 40%	248-337 kPa (36-49 psi)	1880-2287 kPa (273-332 psi)	23°C (73°F)
42-46°C (106-115°F)	Below 20%	278-316 kPa (36-46 psi)	2011-2342 kPa (292-340 psi)	22°C (70°F)
42-46°C (106-115°F)	Above 20%	354-344 kPa (37-50 psi)	2053-2418 kPa (268-351 psi)	24°C (75°F)
47-49°C (116-120°F)	Below 30%	282-358 kPa (41-52 psi)	2590-2590 kPa (328-376 psi)	25°C (77°F)

Air Conditioning (A/C) System Performance Test LE5

Table 1:

A/C Performance Table

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

Test Description

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 2 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 within 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 coldest temperature setting

•	The maximum blower speed

•	Recirculation mode

•	The instrument panel (I/P) outlet mode

•	All I/P outlets are OPEN

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

•	PARK (Automatic)

•	NEUTRAL (Manual)

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

Print the following information:

•	The panel outlet air temperatures

•	The low-side pressure

•	The high-side pressure

Compare the low and high side pressures and the panel output temperatures to the A/C performance table below.

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:

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 panel output temperature 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 4

Do the high and low side pressures fall within the specified ranges, but the panel 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 the specified range, but the low side pressure is within or 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 - Manual

A/C System Pressure - Zone Classification

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%	151-234 kPa (22-34 psi)	1109-1619 kPa (161-235 psi)	8°C (45°F)
19-24°C (66-75°F)	Below 40%	151-213 kPa (22-31 psi)	1019-1481 kPa (148-215 psi)	11°C (51°F)
19-24°C (66-75°F)	Above 40%	151-261 kPa (22-38 psi)	1247-1701 kPa (181-247 psi)	10°C (50°F)
25-29°C (76-85°F)	Below 35%	151-2348 kPa (22-34 psi)	1267-1598 kPa (184-232 psi)	13°C (54°F)
	35-50%	172-254 kPa (25-37 psi)	1378-1681 kPa (200-244 psi)	13°C (54°F)
	Above 50%	186-282 kPa (27-41 psi)	1460-1770 kPa (212-257 psi)	13°C (55°F)
30-35°C (86-95°F)	Below 30%	179-268 kPa (26-39 psi)	1440-1756 kPa (209-255 psi)	14°C (57°F)
	30-50%	192-282 kPa (28-41 psi)	1502-1791 kPa (218-260 psi)	15°C (59°F)
	Above 50%	213-303 kPa (31-44 psi)	1570-1853 kPa (228-269 psi)	17°C (61°F)
36-41°C (96-105°F)	Below 20%	213-269 kPa (31-43 psi)	1639-1942 kPa (238-282 psi)	18°C (63°F)
	20-40%	220-303 kPa (32-44 psi)	1660-1942 kPa (241-282 psi)	18°C (63°F)
	Above 40%	234-316 kPa (34-46 psi)	1701-1929 kPa (247-280 psi)	18°C (64°F)
42-46°C (106-115°F)	Below 20%	254-330 kPa (37-48 psi)	1860-2108 kPa (270-306 psi)	18°C (64°F)
42-46°C (106-115°F)	Above 20%	254-330 kPa (37-48 psi)	1860-2094 kPa (270-304 psi)	19°C (66°F)
47-49°C (116-120°F)	Below 30%	289-358 kPa (42-52 psi)	2032-2273 kPa (295-330 psi)	22°C (70°F)

Air Conditioning (A/C) System Performance Test LY7 Red Line

Table 1:

A/C Performance Table

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

Test Description

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 2 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 within 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 coldest temperature setting

•	The maximum blower speed

•	Recirculation mode

•	The instrument panel (I/P) outlet mode

•	All I/P outlets are OPEN

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

•	PARK (Automatic)

•	NEUTRAL (Manual)

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

Print the following information:

•	The panel outlet air temperatures

•	The low-side pressure

•	The high-side pressure

Compare the low and high side pressures and the panel output temperatures to the A/C performance table below.

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:

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 panel output temperature 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 4

Do the high and low side pressures fall within the specified ranges, but the panel 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 the specified range, but the low side pressure is within or 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 - Manual

A/C System Pressure - Zone Classification

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%	151-213 kPa (22-31 psi)	1240-1570 kPa (180-228 psi)	8°C (46°F)
19-24°C (66-75°F)	Below 40%	151-213 kPa (22-31 psi)	1260-1577 kPa (183-229 psi)	8°C (46°F)
19-24°C (66-75°F)	Above 40%	151-248 kPa (22-36 psi)	1357-1646 kPa (197-239 psi)	10°C (50°F)
25-29°C (76-85°F)	Below 35%	151-234 kPa (22-34 psi)	1446-1688 kPa (210-245 psi)	10°C (50°F)
	35-50%	165-248 kPa (24-36 psi)	1488-1756 kPa (216-255 psi)	10°C (50°F)
	Above 50%	179-268 kPa (26-39 psi)	1522-1791 kPa (221-260 psi)	13°C (54°F)
30-35°C (86-95°F)	Below 30%	179-261 kPa (26-38 psi)	1543-1853 kPa (224-269 psi)	13°C (54°F)
	30-50%	192-275 kPa (28-40 psi)	1543-1818 kPa (224-264 psi)	13°C (55°F)
	Above 50%	206-289 kPa (30-42 psi)	1577-1777 kPa (229-258 psi)	14°C (57°F)
36-41°C (96-105°F)	Below 20%	213-296 kPa (31-43 psi)	1791-2032 kPa (260-295 psi)	14°C (57°F)
	20-40%	220-303 kPa (32-44 psi)	1777-1970 kPa (258-286 psi)	15°C (59°F)
	Above 40%	227-303 kPa (33-44 psi)	1750-1908 kPa (254-277 psi)	17°C (61°F)
42-46°C (106-115°F)	Below 20%	254-323 kPa (37-47 psi)	1977-2177 kPa (287-316 psi)	18°C (63°F)
42-46°C (106-115°F)	Above 20%	254-323 kPa (37-47 psi)	1949-2087 kPa (283-303 psi)	18°C (63°F)
47-49°C (116-120°F)	Below 30%	282-351 kPa (41-51 psi)	2101-2397 kPa (305-348 psi)	19°C (66°F)

Air Conditioning (A/C) System Performance Test LAT Green Line

Table 1:

A/C Performance Table

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

Test Description

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 2 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 within 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 coldest temperature setting

•	The maximum blower speed

•	Recirculation mode

•	The instrument panel (I/P) outlet mode

•	All I/P outlets are OPEN

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

•	PARK (Automatic)

•	NEUTRAL (Manual)

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

Print the following information:

•	The panel outlet air temperatures

•	The low-side pressure

•	The high-side pressure

Compare the low and high side pressures and the panel output temperatures to the A/C performance table below.

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:

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 panel output temperature 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 4

Do the high and low side pressures fall within the specified ranges, but the panel 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 the specified range, but the low side pressure is within or 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 - Manual

A/C System Pressure - Zone Classification

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%	151-227 kPa (22-33 psi)	826-1378 kPa (120-200 psi)	8°C (45°F)
19-24°C (66-75°F)	Below 40%	151-220 kPa (22-32 psi)	826-1350 kPa (120-196 psi)	8°C (46°F)
19-24°C (66-75°F)	Above 40%	151-261 kPa (22-38 psi)	1026-1529 kPa (149-222 psi)	10°C (50°F)
25-29°C (76-85°F)	Below 35%	151-241 kPa (22-35 psi)	1150-1529 kPa (167-222 psi)	10°C (50°F)
	35-50%	172-254 kPa (25-37 psi)	1240-1570 kPa (180-228 psi)	12°C (52°F)
	Above 50%	186-282 kPa (27-41 psi)	1309-1660 kPa (190-241 psi)	13°C (55°F)
30-35°C (86-95°F)	Below 30%	186-275 kPa (27-40 psi)	1391-1770 kPa (202-257 psi)	13°C (55°F)
	30-50%	199-289 kPa (29-42 psi)	1440-1791 kPa (209-260 psi)	15°C (59°F)
	Above 50%	213-310 kPa (31-45 psi)	1488-1818 kPa (216-264 psi)	18°C (63°F)
36-41°C (96-105°F)	Below 20%	220-303 kPa (32-44 psi)	1681-2039 kPa (244-296 psi)	17°C (61°F)
	20-40%	227-316 kPa (33-46 psi)	1688-2018 kPa (245-293 psi)	18°C (64°F)
	Above 40%	241-330 kPa (35-48 psi)	1701-1998 kPa (247-290 psi)	19°C (66°F)
42-46°C (106-115°F)	Below 20%	261-337 kPa (38-49 psi)	1977-2280 kPa (287-331 psi)	19°C (66°F)
42-46°C (106-115°F)	Above 20%	268-344 kPa (39-50 psi)	1956-2218 kPa (284-322 psi)	22°C (70°F)
47-49°C (116-120°F)	Below 30%	296-372 kPa (43-54 psi)	2197-2459 kPa (319-357 psi)	23°C (73°F)