A/C System Contamination Inspection

NOTE:
If the A/C compressor failure is diagnosed, always use this inspection to check the extent of contamination in the A/C system.
The parts illustrations are sample. External appearance may vary from model to model.

1. A/C System Contamination - Inspect

Remove a part from the related parts as described in the table. Then, swab inside the part with a cotton swab to see if there is metal, dark grey or black residue.


Step
Part to Remove
Inspection Area
Metal, Dark Grey or Black Residue
Contamination
No Contamination Found
1
Discharge hose
(A/C compressor side)
Discharge port (A)
Go to step 2.
No contamination is present from the A/C compressor.
Replace only the A/C compressor.
2
Suction hose
(A/C compressor side)
Suction port (B)
Replace the components in Repair Procedure D.
Go to step 3.
3
Receiver line
(A/C condenser outlet)
A/C condenser outlet port (C)
Go to step 4.
Go to step 5.
4
Receiver line and suction pipe (Both are expansion valve side)
Expansion valve port (D)
Replace the components in Repair Procedure D.
Replace the components in Repair Procedure C.
5
Discharge hose
(A/C condenser inlet)
A/C condenser inlet port (E)
Replace the components in Repair Procedure B.
Replace the components in Repair Procedure A.


NOTE: The parts illustrations are sample. External appearance may vary from model to model.

1. A/C Components - Replace
Repair Procedure A

Replace the following parts:
Repair Procedure B

Replace the following parts:
Repair Procedure C

Replace the following parts: