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 |
|---|
| NOTE: 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. Record the ambient air temperature displayed on the J 43600 ACR 2000 air conditioning service center. 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 | Close the vehicle doors and windows. NOTE: Record the relative humidity and the ambient air temperature at the time of the test. 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 panel outlet mode All panel outlets are OPEN Install the temperature probes of the J 43600 ACR 2000 air conditioning service center in the left and right center panel air outlets. Apply the parking brake. Place the transaxle/transmission in 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 Print the following information: NOTE: Press the RESET button, before using the print function of the J 43600 ACR 2000 air conditioning service center. 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 5 | 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 ACR 2000 air conditioning service center 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 5 | Go to Step 4 |
| 4 | Perform the necessary repairs. Refer to A/C Diagnostics Chart . Is the action complete? | | Go to Step 5 | |
| 5 | Operate the system in order to verify the test results. Did you find the same results? | | System OK | Go to Symptoms - HVAC Systems - Manual |
| NOTE |
|---|
| 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. |
| NOTE |
|---|
| Record the relative humidity and the ambient air temperature at the time of the test. |
| NOTE |
|---|
| Press the RESET button, before using the print function of the J 43600 ACR 2000 air conditioning service center. |
Air Conditioning (A/C) System Performance Test
| Ambient Temperature | Relative Humidity | Low Side Service Port Pressure | High Side Service Port Pressure | Maximum Left Center Discharge Air Temperature | Maximum Left Rear Discharge Air Temperature |
|---|
| 13-18°C (55-65°F) | 0-100% | 151-234 kPa (22-34 psi) | 861-1198 kPa (125-174 psi) | 8°C (46°F) | 13°C (54°F) |
| 19-24°C (66-75°F) | Below 40% | 151-248 kPa (22-36 psi) | 930-1267 kPa (135-184 psi) | 9°C (48°F) | 12°C (52°F) |
| Above 40% | 172-282 kPa (25-41 psi) | 1012-1371 kPa (147-199 psi) | 13°C (54°F) | 15°C (59°F) |
| 25-29°C (76-85°F) | Below 35% | 192-282 kPa (28-41 psi) | 1129-1412 kPa (164-205 psi) | 12°C (52°F) | 14°C (57°F) |
| 35-50% | 206-289 kPa (30-42 psi) | 1178-1440 kPa (171-209 psi) | 13°C (54°F) | 15°C (59°F) |
| Above 50% | 220-316 kPa (32-46 psi) | 1212-1508 kPa (176-219 psi) | 14°C (57°F) | 18°C (64°F) |
| 30-35°C (86-95°F) | Below 30% | 227-316 kPa (33-46 psi) | 1281-1577 kPa (186-229 psi) | 14°C (57°F) | 18°C (64°F) |
| 30-50% | 234-330 kPa (34-48 psi) | 1322-1619 kPa (192-235 psi) | 17°C (61°F) | 18°C (64°F) |
| Above 50% | 254-351 kPa (37-51 psi) | 1357-1667 kPa (197-242 psi) | 18°C (64°F) | 20°C (68°F) |
| 36-41°C (96-105°F) | Below 20% | 261-351 kPa (38-51 psi) | 1460-1743 kPa (212-253 psi) | 18°C (64°F) | 20°C (68°F) |
| 20-40% | 268-365 kPa (39-53 psi) | 1481-1770 kPa (215-257 psi) | 18°C (64°F) | 22°C (70°F) |
| Above 40% | 282-378 kPa (41-55 psi) | 1522-1812 kPa (221-263 psi) | 20°C (68°F) | 23°C (73°F) |
| 42-46°C (106-115°F) | Below 20% | 310-385 kPa (45-56 psi) | 1639-1887 kPa (238-274 psi) | 20°C (68°F) | 23°C (73°F) |
| Above 20% | 316-399 kPa (46-58 psi) | 1660-1922 kPa (241-279 psi) | 22°C (70°F) | 24°C (75°F) |
| 47-49°C (116-120°F) | Below 30% | 351-427 kPa (51-62 psi) | 1812-2060 kPa (263-299 psi) | 24°C (75°F) | 27°C (79°F) |
