Step | Action | Value | Yes | No | ||||
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DEFINITION: The low side pressure is lower than normal and the high side pressure is higher than normal.
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1 | Were you sent here from the A/C System Performance Test? | -- | Go to Step 2 | |||||
2 |
Warning: Refer to Moving Parts and Hot Surfaces Warning in the Preface section. Feel the liquid line at the front of dash. Is the liquid line cold at the front of dash? | -- | Go to Step 3 | Go to Step 8 | ||||
3 | Feel along the surface of the liquid line between the condenser and the front of dash. Did you detect an abrupt drop in temperature along the surface? | -- | Go to Step 5 | Go to Step 4 | ||||
4 | Feel along the surfaces of the following low side components:
Did you feel an abrupt temperature change along the surfaces of any of the listed components? | -- | Go to Step 5 | Go to Step 6 | ||||
5 |
Is the repair complete? | -- | Go to Step 13 | -- | ||||
6 | The system may be low charged.
Is the weight of the recovered refrigerant charge less than the specified value? | Standard AC 0.57 kg (1.26 lbs) With Rear AC (C57) 0.80 kg (1.76 lbs) | Go to Step 7 | Go to Step 10 | ||||
7 | The expansion device may be restricted or failed.
Did you notice a residue at the inlet to the expansion device? | -- | Go to Step 8 | Go to Step 11 | ||||
8 | The desiccant bag in the receiver portion of the condenser may have failed.
Was the bag broken or leaking? | -- | Go to Step 9 | Go to Step 12 | ||||
9 |
Are the repairs complete? | -- | Go to Step 13 | -- | ||||
10 |
Are the repairs complete? | -- | Go to Step 13 | -- | ||||
11 |
Are the repairs complete? | -- | Go to Step 13 | -- | ||||
12 |
Are the repairs complete? | -- | Go to Step 13 | -- | ||||
13 |
Are the readings within the specified ranges as shown on the A/C performance Table? | -- | Go to Step 14 | |||||
14 | Operate the system in order to verify the repair. Did you find and correct the condition? | -- | System OK |