Step | Action | Yes | No | ||||||
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DEFINITION: The high and low side pressures may be normal or slightly less than normal.
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1 | Were you sent here from the A/C System Performance Test? | Go to Step 2 | |||||||
2 | Did the customer mention that the A/C system output temperatures are good at first, but then turn warm during extended drives? | Go to Step 3 | Go to Step 4 | ||||||
3 | Increase engine speed to 1,500 RPM. During extended operation of the A/C system, does the low side pressure decrease? | Go to Step 4 | |||||||
4 | Refer to the pressures recorded during the A/C system performance test. Caution: Refer to Moving Parts and Hot Surfaces Caution in the Preface section. Inspect for the following conditions:
Do the listed conditions exist? | Go to Step 7 | Go to Step 5 | ||||||
5 | Refer to the pressures recorded during the A/C system performance test. Inspect for the following conditions:
Do the listed conditions exist? | Go to Step 6 | Go to Too Hot in Vehicle | ||||||
6 | The A/C system may be undercharged of refrigerant.
Is the repair complete? | Go to Step 11 | -- | ||||||
7 | The A/C system may be contaminated. View the J 43600 ACR 2000 Air Conditioning Service Center information screen for detection of foreign gases in the A/C system. Do foreign gases exist? | Go to Step 8 | Go to Step 9 | ||||||
8 |
Is the repair complete? | Go to Step 11 | -- | ||||||
9 | The A/C system may contain too much moisture or air.
Are the panel outlet temperatures within the specified ranges of the A/C Performance Test Table? | Go to Step 11 | Go to Step 10 | ||||||
10 |
Are the high and low side pressures and I/P outlet temperatures within specifications? | Go to Step 11 | |||||||
11 | Operate the system in order to verify the repair. Have the concerns been eliminated? | System OK |