Chart 1 No Compressor Operation

CIRCUIT DESCRIPTION

The compressor clutch coil is fed power through the A/C relay and is grounded through the A/C ground (CKT 804).

TEST DESCRIPTION: Numbers below refer to circled numbers on the diagnostic chart.

1. This step checks to see if the fault lies in the output or input of the PCM.

2. This step checks the A/C relay switch contacts.

3. This step checks to see if the A/C relay is receiving power on CKT 258.

4. This step checks to see if there is an open in the compressor clutch power CKT 59.

5. This step checks to see if the compressor clutch is faulty or if there is an open in the compressor clutch ground CKT 804.

6. This step checks the A/C relay coil.

7. This step checks to see if there is an open in CKT 67 OR CKT 762 not allowing the A/C relay to be closed.