Table 1: | A/C Performance Table - Front A/C |
Table 2: | A/C Performance Table - with Rear A/C |
Table 3: | A/C Performance Table - with Rear A/C and V8 |
The following test measures the A/C system under the following conditions:
• | The current ambient air temperature |
• | The current ambient air 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 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 | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Important:
| ||||||||||||||||||||||||
Are both the low and high side pressures within the specified value? | Greater than 16°C (60°F): 345 kPa (50 psi) Greater than 24°C (75°F): 483 kPa (70 psi) Greater 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 temperature at the time of the test.
Important: When using the print function of J 43600 for this step, press the RESET button before pressing the PRINT button in order to capture the correct information.
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 outlet temperatures do not? | -- | Go to Step 5 | |||||||||||||||||||||
5 | Is the low side pressure higher than the specified range and the high side pressure within or lower than the specified range? | -- | Go to Step 6 | |||||||||||||||||||||
6 | Are the low and high side pressures both higher 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 | Go to Symptoms - HVAC Systems - Manual in HVAC Systems-Manual or Symptoms - HVAC Systems - Automatic in HVAC Systems-Automatic |
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% | 175-207 kPa (25-30 psi) | 1030-1220 kPa (135-175 psi) | 7°C (45°F) |
19-24°C (66-75°F) | Less than 40% | 175-254 kPa (25-37 psi) | 1200-1430 kPa (160-200 psi) | 11°C (52°F) |
Greater than 40% | 175-262 kPa (25-38 psi) | 1170-1400 kPa (170-210 psi) | 11°C (52°F) | |
25-29°C (76-85°F) | Less than 35% | 208-288 kPa (30-42 psi) | 1370-1570 kPa (150-190 psi) | 14°C (57°F) |
35-50% | 213-292 kPa (31-42 psi) | 1350-1570 kPa (160-200 psi) | 14°C (57°F) | |
Greater than 50% | 216-300 kPa (31-44 psi) | 1340-1550 kPa (160-200 psi) | 15°C (59°F) | |
30-35°C (86-95°F) | Less than 30% | 242-328 kPa (35-48 psi) | 1510-1750 kPa (200-240 psi) | 17°C (63°F) |
30-50% | 246-335 kPa (36-49 psi) | 1500-1740 kPa (200-240 psi) | 17°C (63°F) | |
Greater than 50% | 252-346 kPa (37-50 psi) | 1490-1730 kPa (200-240 psi) | 19°C (66°F) | |
36-41°C (96-105°F) | Less than 20% | 281-366 kPa (41-53 psi) | 1680-1920 kPa (240-280 psi) | 19°C (66°F) |
20-40% | 285-374 kPa (41-54 psi) | 1670-1920 kPa (245-285 psi) | 21°C (70°F) | |
Greater than 40% | 292-383 kPa (42-56 psi) | 1670-1910 kPa (250-265 psi) | 22°C (72°F) | |
42-46°C (106-115°F) | Less than 20% | 322-400 kPa (47-58 psi) | 1850-2070 kPa (250-290 psi) | 22°C (72°F) |
Greater than 20% | 326-410 kPa (47-60 psi) | 1840-2060 kPa (260-300 psi) | 23°C (73°F) | |
47-49°C (116-120°F) | Less than 30% | 360-426 kPa (52-62 psi) | 1990-2150 kPa (290-330 psi) | 24°C (75°F) |
Ambient Air Temperature | Relative Humidity | Service Port Pressure | Maximum Discharge Air Temperature | ||
---|---|---|---|---|---|
Low Side | High Side | Left Center | Rear Center | ||
13-18°C (55-65°F) | 0-100% | 184-273 kPa (27-40 psi) | 600-1080 kPa (87-157 psi) | 19°C (66°F) | 17°C (62°F) |
19-24°C (66-75°F) | Less than 40% | 227-335 kPa (33-49 psi) | 720-1210 kPa (105-176 psi) | 19°C (66°F) | 20°C (68°F) |
Greater than 40% | 234-349 kPa (34-51 psi) | 840-1330 kPa (122-193 psi) | 22°C (72°F) | 21°C (70°F) | |
25-29°C (76-85°F) | Less than 35% | 286-383 kPa (42-56 psi) | 1050-1440 kPa (152-209 psi) | 21°C (70°F) | 23°C (73°F) |
35-50% | 293-390 kPa (43-57 psi) | 1110-1470 kPa (161-213 psi) | 22°C (72°F) | 23°C (73°F) | |
Greater than 50% | 298-403 kPa (43-59 psi) | 1160-1550 kPa (168-225 psi) | 24°C (75°F) | 24°C (75°F) | |
30-35°C (86-95°F) | Less than 30% | 334-440 kPa (49-64 psi) | 1310-1720 kPa (190-250 psi) | 24°C (75°F) | 27°C (81°F) |
30-50% | 341-452 kPa (51-68 psi) | 1340-1750 kPa (195-254 psi) | 25°C (77°F) | 27°C (81°F) | |
Greater than 50% | 350-469 kPa (51-68 psi) | 1390-1800 kPa (202-261 psi) | 27°C 81°F) | 28°C (82°F) | |
36-41°C (96-105°F) | Less than 20% | 388-492 kPa (56-71 psi) | 1600-2000 kPa (232-290 psi) | 27°C (81°F) | 30°C (86°F) |
20-40% | 394-506 kPa (57-73 psi) | 1620-2020 kPa (235-293 psi) | 28°C (82°F) | 31°C (88°F) | |
Greater than 40% | 406-520 kPa (59-76 psi) | 1660-2040 kPa (241-296 psi) | 29°C (84°F) | 32°C (90°F) | |
42-46°C (106-115°F) | Less than 20% | 445-541 kPa (65-79 psi) | 1910-2260 kPa (277-328 psi) | 30°C (86°F) | 34°C (93°F) |
Greater than 20% | 452-557 kPa (66-81 psi) | 1920-2260 kPa (279-328 psi) | 31°C (88°F) | 34°C (93°F) | |
47-49°C (116-120°F) | Less than 30% | 501-579 kPa (73-84 psi) | 2180-2410 kPa (316-350 psi) | 32°C (90°F) | 36°C (97°F) |
Ambient Air Temperature | Relative Humidity | Service Port Pressure | Maximum Discharge Air Temperature | ||
---|---|---|---|---|---|
Low Side | High Side | Left Center | Rear Center | ||
13-18°C (55-65°F) | 0-100% | 175-265 kPa (25-39 psi) | 760-1070 kPa (110-155 psi) | 13°C (55°F) | 16°C (61°F) |
19-24°C (66-75°F) | Less than 40% | 186-294 kPa (27-43 psi) | 910-1240 kPa (132-180 psi) | 14°C (57°F) | 17°C (63°F) |
Greater than 40% | 207-326 kPa (30-47 psi) | 940-1300 kPa (136-189 psi) | 16°C (61°F) | 19°C (66°F) | |
25-29°C (76-85°F) | Less than 35% | 234-328 kPa (34-48 psi) | 1120-1410 kPa (163-205 psi) | 16°C (61°F) | 20°C (68°F) |
35-50% | 250-341 kPa (36-50 psi) | 1150-1450 kPa (167-209 psi) | 17°C (63°F) | 20°C (68°F) | |
Greater than 50% | 262-368kPa (38-53 psi) | 1180-1500 kPa (171-218 psi) | 19°C (66°F) | 22°C (72°F) | |
30-35°C (86-95°F) | Less than 30% | 271-370 kPa (39-54 psi) | 1300-1620 kPa (189-235 psi) | 19°C (66°F) | 23°C (73°F) |
30-50% | 284-389 kPa (41-56 psi) | 1320-1670 kPa (192-242 psi) | 21°C (70°F) | 24°C (75°F) | |
Greater than 50% | 301-418 kPa (44-61 psi) | 1360-1740 kPa (197-253 psi) | 23°C (73°F) | 25°C (77°F) | |
36-41°C (96-105°F) | Less than 20% | 310-405 kPa (45-59 psi) | 1490-1800 kPa (216-261 psi) | 22°C (72°F) | 25°C (77°F) |
20-40% | 320-426 kPa (46-62 psi) | 1510-1860 kPa (219-270 psi) | 23°C (73°F) | 27°C (81°F) | |
Greater than 40% | 339-447 kPa (49-65 psi) | 1560-1920 kPa (226-279 psi) | 25°C (77°F) | 26°C (79°F) | |
42-46°C (106-115°F) | Less than 20% | 354-442 kPa (51-64 psi) | 1700-1980 kPa (247-287 psi) | 24°C (75°F) | 28°C (82°F) |
Greater than 20% | 365-465 kPa (53-68 psi) | 1720-2040 kPa (250-296 psi) | 26°C (79°F) | 29°C (84°F) | |
47-49°C (116-120°F) | Less than 30% | 402-477 kPa (58-69 psi) | 1900-2120 kPa (276-308 psi) | 27°C (81°F) | 30°C (86°F) |