Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 1: This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system without damage.
- 2: This step measures the performance of the A/C system.
- 3: This step is to allow for vehicle variations as well as high ambient temperatures.
| Step | Action | Values | Yes | No |
|---|
| 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. |
| 1 | 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. See Special Tools . Record the ambient air temperature displayed on the J 43600 . See Special Tools . 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 |
| 2 | IMPORTANT: Record the relative humidity and the ambient air temperature at the time of the test. Close the vehicle doors and windows. Open the drivers 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 I/P panel outlet mode All I/P panel outlets are OPEN. Install the temperature probes of the J 43600 in the left and right center panel air outlets. See Special Tools . Apply the parking brake. Place the transaxle/transmission in one of the following positions: PARK (Automatic) NEUTRAL (Manual) Start the engine and warm to operating temperature. 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 . See Special Tools . 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 below? | | Go to Step 8 | Go to Step 3 |
| 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. See Special Tools . Compare the low and high side pressures and the panel 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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. |
| IMPORTANT |
|---|
| Record the relative humidity and the ambient air temperature at the time of the test. |
| IMPORTANT |
|---|
| Press the RESET button, before using the print function of the J 43600 . See Special Tools . |
Air Conditioning (A/C) System Performance Test (2.2 L61)
| 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% | 165-228 kPa (24-33 psi) | 655-1020 kPa (95-148 psi) | 13°C (55°F) |
| 19-24°C (66-75°F) | Less than 40% | 165-228 kPa (24-33 psi) | 689-1124 kPa (100-163 psi) | 13°C (55°F) |
| Greater than 40% | 165-228 kPa (24-33 psi) | 689-1476 kPa(100-214 psi) | 13°C (55°F) |
| 25-29°C (76-85°F) | Less than 35% | 165-228 kPa (24-33 psi) | 758-1338 kPa (110-194 psi) | 13°C (55°F) |
| 35-60% | 165-255 kPa (24-37 psi) | 758-1586 kPa(110-230 psi) | 13°C (55°F) |
| Greater than 60% | 172-255 kPa (25-37 psi) | 972-1586 kPa(141-230 psi) | 13°C (55°F) |
| 30-35°C (86-95°F) | Less than 30% | 165-248 kPa (24-36 psi) | 1123-1476 kPa (163-214 psi) | 13°C (55°F) |
| 30-50% | 172-255 kPa (25-37 psi) | 1158-1586 kPa(168-230 psi) | 14°C (56°F) |
| Greater than 50% | 172-260 kPa (25-38 psi) | 1192-1586 kPa (173-230 psi) | 15°C (60°F) |
| 36-41°C (96-105°F) | Less than 20% | 172-276 kPa (25-40 psi) | 1241-1689 kPa (180-245 psi) | 15°C (60°F) |
| 20-40% | 172-317 kPa (25-46 psi) | 1241-2309 kPa (180-335 psi) | 15°C (60°F) |
| Greater than 40% | 179-317 kPa (26-46 psi) | 1365-2309 kPa( 198-335 psi) | 17°C (63°F) |
| 42-46°C (106-115°F) | Less than 20% | 186-290 kPa (27-42 psi) | 1537-2033 kPa (223-295 psi) | 17°C (63°F) |
| Greater than 20% | 193-331 kPa (28-48 psi) | 1572-2309 kPa(228-335 psi) | 19°C (66°F) |
| 47-49°C (116-120°F) | Below 30% | 262-345 kPa (38-50 psi) | 1723-2386 kPa (250-346 psi) | 19°C (66°F) |
Scheme 1
The numbers below refer to the step numbers on the diagnostic table.
- 1: This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system without damage.
- 2: This step measures the performance of the A/C system.
- 3: This step is to allow for vehicle variations as well as high ambient temperatures.
| Step | Action | Values | Yes | No |
|---|
| 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. |
| 1 | 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. See Special Tools . Record the ambient air temperature displayed on the J 43600 . See Special Tools . 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 |
| 2 | IMPORTANT: Record the relative humidity and the ambient air temperature at the time of the test. Close the vehicle doors and windows. Open the drivers 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 I/P panel outlet mode All I/P panel outlets are OPEN. Install the temperature probes of the J 43600 in the left and right center panel air outlets. See Special Tools . Apply the parking brake. Place the transaxle/transmission in one of the following positions: PARK (Automatic) NEUTRAL (Manual) Start the engine and warm to operating temperature. 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 . See Special Tools . 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 below? | | Go to Step 8 | Go to Step 3 |
| 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. See Special Tools . Compare the low and high side pressures and the panel 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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. |
| IMPORTANT |
|---|
| Record the relative humidity and the ambient air temperature at the time of the test. |
| IMPORTANT |
|---|
| Press the RESET button, before using the print function of the J 43600 . See Special Tools . |
Air Conditioning (A/C) System Performance Test (2.0 LSJ )
| 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% | 150-210 kPa (22-30 psi) | 750-1378 kPa (109-200 psi) | 10°C (50°F) |
| 19-24°C (66-75°F) | Less than 40% | 150-232 kPa (22-34 psi) | 710-1378 kPa (103-200 psi) | 10°C (50°F) |
| Greater than 40% | 159-255 kPa (23-37 psi) | 940-1516 kPa(136-220 psi) | 14°C (57°F) |
| 25-29°C (76-85°F) | Less than 35% | 177-255 kPa (26-37 psi) | 1030-1430 kPa (149-208 psi) | 13°C (55°F) |
| 35-60% | 177-265 kPa (26-38 psi) | 1150-1490 kPa(167-216 psi) | 14°C (57°F) |
| Greater than 60% | 198-285 kPa (29-41 psi) | 1230-1610 kPa(179-234 psi) | 17°C (63°F) |
| 30-35°C (86-95°F) | Less than 30% | 198-285 kPa (29-41 psi) | 1270-1660 kPa (184-241 psi) | 16°C (61°F) |
| 30-50% | 212-298 kPa (31-43 psi) | 1330-1700 kPa(193-247 psi) | 18°C (64°F) |
| Greater than 50% | 212-320 kPa (31-46 psi) | 1378-1760 kPa (200-255 psi) | 21°C (70°F) |
| 36-41°C (96-105°F) | Less than 20% | 225-308 kPa (33-45 psi) | 1550-1920 kPa (225-279 psi) | 18°C (64°F) |
| 20-40% | 232-324 kPa (34-47 psi) | 1570-1920 kPa (228-279 psi) | 21°C (70°F) |
| Greater than 40% | 256-340 kPa (36-49 psi) | 1600-1910 kPa(232-277 psi) | 23°C (73°F) |
| 42-46°C (106-115°F) | Less than 20% | 265-333 kPa (38-48 psi) | 1840-2150 kPa (267-312 psi) | 21°C (70°F) |
| Greater than 20% | 268-351 kPa (39-51 psi) | 1840-2110 kPa(267-306 psi) | 24°C (75°F) |
| 47-49°C (116-120°F) | Below 30% | 298-368 kPa (43-53 psi) | 2070-2340 kPa (300-340 psi) | 26°C (79°F) |
Scheme 2
