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 |
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 | No | ||||||||||||||||||||||||||
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Important:
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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.
Important: Press the RESET button, before using the print function of the J 43600 .
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:
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 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 Step 6 | |||||||||||||||||||||||||||
6 | Are the low and high side pressures both greater than the specified ranges? | -- | 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 Step 8 | |||||||||||||||||||||||||||
8 | Operate the system in order to verify the test results. Did you find the same results? | -- | System OK |
Ambient Air Temperature | Relative Humidity | Service Port Pressure | Maximum Left Center Discharge Air Temperature | |
---|---|---|---|---|
Low Side | High Side | |||
13-18°C (55-65°F) | 0-100% | 150-265 kPa (22-38 psi) | 510-1070 kPa (74-155 psi) | 9°C (48°F) |
19-24°C (66-75°F) | Below 40% | 155-283 kPa (226-41 psi) | 640-1200 kPa (93-174 psi) | 9°C (48°F) |
Above 40% | 180-311 kPa (26-45 psi) | 670-1180 kPa (97-171 psi) | 11°C (52°F) | |
25-29°C (76-85°F) | Below 35% | 194-315 kPa (28-46 psi) | 820-1340 kPa (119-194 psi) | 11°C (52°F) |
35-50% | 212-326 kPa (31-47 psi) | 850-1320 kPa (123-192 psi) | 12°C (54°F) | |
Above 50% | 225-349 kPa (33-51 psi) | 840-1300 kPa (122-189 psi) | 14°C (57°F) | |
33-35°C (86-95°F) | Below 30% | 223-360 kPa (32-52 psi) | 970-1530 kPa (141-222 psi) | 14°C (57°F) |
30-50% | 237-374 kPa (34-54 psi) | 990-1510 kPa (144-219 psi) | 16°C (61°F) | |
Above 50% | 255-395 kPa (37-57 psi) | 990-1490 kPa (144-216 psi) | 19°C (66°F) | |
36-41°C (96-105°F) | Below 20% | 253-406 kPa (37-59 psi) | 1140-1750 kPa (165-254 psi) | 16°C (61°F) |
20-40% | 262-415 kPa (38-60 psi) | 1160-1730 kPa (168-251 psi) | 18°C (64°F) | |
Above 40% | 281-428 kPa (41-62 psi) | 1180-1700 kPa (171-247 psi) | 20°C (68°F) | |
42-46°C (106-115°F) | Below 20% | 288-447 kPa (42-65 psi) | 1320-1920 kPa (192-279 psi) | 19°C (66°F) |
Above 20% | 297-455 kPa (43-66 psi) | 1340-1900 kPa (194-276 psi) | 21°C (70°F) | |
47-49°C (116-120°F) | Below 30% | 327-473 kPa (47-69 psi) | 1490-2010 kPa (216-292 psi) | 21°C (70°F) |