A/C System Contamination Inspection

A/C System Contamination Inspection

Inspection

1. A/C System - Contamination Inspection

1. If A/C compressor failure is diagnosed, always use this inspection to check the extent of contamination in the A/C system.






2. Remove the discharge hose (A) from the A/C compressor. Then, swab inside the discharge hose and A/C compressor discharge port with a cotton swab.

* If no metal, dark gray or black residue is found, no contamination is present from the A/C compressor. Replace only the A/C compressor.
* If metal, dark gray or black residue is found, go to step 3.

3. Remove the suction hose (D) from the A/C compressor. Then, swab inside the suction hose and A/C compressor suction port with a cotton swab.

* If no metal, dark gray or black residue is found, go to step 4.
* If metal, dark gray or black residue is found, replace the components listed in Repair Procedure C.

4. Remove the receiver line (B) from the A/C condenser outlet. Then, swab inside the receiver line and A/C condenser outlet with a cotton swab.

* If no metal, dark gray or black residue is found, go to step 6.
* If metal, dark gray or black residue is found, go to step 5.

5. Remove the A/C lines (C) from the expansion valve. Then, swab inside the expansion valve and the A/C lines with a cotton swab

* If no metal, dark gray or black residue is found, replace the components listed in Repair Procedure B.
* If metal, dark gray or black residue is found, replace the components listed in Repair Procedure C.

6. Remove the discharge hose (A) from the A/C condenser inlet. Then, swab inside the discharge hose and A/C condenser inlet with a cotton swab.

* If no metal, dark gray or black residue is found, replace the components listed in Repair Procedure A.
* If metal, dark gray or black residue is found, replace the components listed in Repair Procedure B.