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 . See Special Tools and Equipment . Record the ambient air temperature displayed on the J 43600 . See Special Tools and Equipment . 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 inches). 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 and Equipment . 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 . See Special Tools and Equipment . 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 |
| 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 and Equipment . 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 |
| 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 in 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 and Equipment . |
Air Conditioning (A/C) System Performance Test (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% | 191-235 kPa (28-34 psi) | 539-781 kPa (78-113 psi) | 7°C (45°F) |
| 19-24°C (66-75°F) | Less than 40% | 191-258 kPa (38-37 psi) | 708-878 kPa (103-128 psi) | 8°C (47°F) |
| Greater than 40% | 197-258 kPa (29-37 psi) | 708-955 kPa (103-139 psi) | 10°C (50°F) |
| 25-29°C (76-85°F) | Less than 35% | 213-261 kPa (31-38 psi) | 783-1129 kPa (114-164 psi) | 10°C (50°F) |
| 35-60% | 225-277 kPa (33-40 psi) | 833-1137 kPa (121-165 psi) | 12°C (54°F) |
| Greater than 60% | 238-303 kPa (35-44 psi) | 877-1205 kPa (127-175 psi) | 14°C (58°F) |
| 30-35°C (86-95°F) | Less than 30% | 225-288 kPa (33-42 psi) | 940-1357 kPa (136-197 psi) | 12°C (54°F) |
| 30-50% | 238-303 kPa (35-44 psi) | 1000-1387 kPa (145-201 psi) | 14°C (58°F) |
| Greater than 50% | 238-322 kPa (35-47 psi) | 1000-1372 kPa (145-199 psi) | 15°C (60°F) |
| 36-41°C (96-105°F) | Less than 20% | 251-322 kPa (36-47 psi) | 1153-1637 kPa (167-238 psi) | 15°C (60°F) |
| 20-40% | 276-352 kPa (40-51 psi) | 1240-1728 kPa (180-251 psi) | 18°C (65°F) |
| Greater than 40% | 288-375 kPa (42-54 psi) | 1328-1811 kPa (193-263 psi) | 21°C (71°F) |
| 42-46°C (106-115°F) | Less than 20% | 288-364 kPa (42-53 psi) | 1365-1811 kPa (198-263 psi) | 21°C (71°F) |
| Greater than 20% | 316-390 kPa (46-57 psi) | 1503-1887 kPa (218-274 psi) | 21°C (71°F) |
| 47-49°C (116-120°F) | Below 30% | 316-390 kPa (46-57 psi) | 1547-1948 kPa (225-283 psi) | 21°C (71°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 . See Special Tools and Equipment . Record the ambient air temperature displayed on the J 43600 . See Special Tools and Equipment . 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 inches). 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 and Equipment . 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 IMPORTANT: Press the RESET button, before using the print function of the J 43600 . See Special Tools and Equipment . 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 |
| 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 and Equipment . 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 |
| 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 in 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 and Equipment . |
Air Conditioning (A/C) System Performance Test (L66)
| 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% | 181-198 kPa (26-29 psi) | 675-792 kPa (98-115 psi) | 9°C (49°F) |
| 19-24°C (66-75°F) | Less than 40% | 186-198 kPa (27-29 psi) | 820-1040 kPa (119-151 psi) | 5°C (42°F) |
| Greater than 40% | 189-203 kPa (28-30 psi) | 875-1082 kPa (127-157 psi) | 6°C (43°F) |
| 25-29°C (76-85°F) | Less than 35% | 198-213 kPa (29-31 psi) | 1068-1275 kPa (155-185 psi) | 7°C (45°F) |
| 35-60% | 213-222 kPa (31-32 psi) | 1158-1399 kPa (168-203 psi) | 9°C (48°F) |
| Greater than 60% | 227-238 kPa (33-35 psi) | 1247-1488 kPa (181-216 psi) | 12°C (53°F) |
| 30-35°C (86-95°F) | Less than 30% | 222-238 kPa (32-35 psi) | 1344-1640 kPa (195-238 psi) | 10°C (50°F) |
| 30-50% | 236-250 kPa (34-36 psi) | 1419-1771 kPa (206-257 psi) | 12°C (53°F) |
| Greater than 50% | 238-264 kPa (35-38 psi) | 1412-1778 kPa (205-258 psi) | 13°C (56°F) |
| 36-41°C (96-105°F) | Less than 20% | 250-254 kPa (36-37 psi) | 1516-1723 kPa (220-250 psi) | 12°C (53°F) |
| 20-40% | 269-278 kPa (39-40 psi) | 1550-1840 kPa (225-267 psi) | 14°C (57°F) |
| Greater than 40% | 290-304 kPa (42-44 psi) | 1454-1612 kPa (211-234 psi) | 16°C (61°F) |
| 42-46°C (106-115°F) | Less than 20% | 278-299 kPa (40-43 psi) | 1598-1750 kPa (232-254 psi) | 13°C (56°F) |
| Greater than 20% | 304-332 kPa (44-48 psi) | 1654-1791 kPa (240-260 psi) | 19°C (67°F) |
| 47-49°C (116-120°F) | Below 30% | 296-376 kPa (43-55 psi) | 1667-2139 kPa (242-310 psi) | 22°C (71°F) |
Scheme 2
