Compressor Clutch Coil: Testing and Inspection

Steps 1-10:

Steps 11-13:

The compressor is a scroll compressor that matches the air conditioning demand by changing the compressor stroke, instead of cycling the compressor clutch. A capacity control valve located in the compressor senses the low side pressure and causes the compressor to adjust to A/C cooling demands. The compressor always runs and the system does not cycle. However, the compressor may cycle if the cooling load is not reduced enough by the capacity control valve.

Preliminary Checks
^ Check the proper operation of the cooling fans.
^ Check for system voltage above 10.5 Volts.
^ Check the A/C fuse and replace as necessary.
^ Check the A/C blower operation and repair as necessary.
^ Check the clutch coil electrical connection and repair as necessary.
^ Check the drive belt and replace if damaged or missing.
^ Check the condenser for restricted air flow and clean as necessary.

Refer to the following tables when you are diagnosing insufficient cooling complaints.