Operation CHARM: Car repair manuals for everyone.

System Diagnosis - HVAC System - Automatic

A: (C68) Compressor Clutch Does Not Engage In Any Mode (Part 1):




A: (C68) Compressor Clutch Does Not Engage In Any Mode (Part 2):





- Do the tests in the trouble tree (see images for parts 1 and 2) if A/C Compressor Clutch does not engage.

- Do the test only when outside temperature is above 16°C (60 °F).

- Check for PCM codes. If any PCM codes are set, Refer to Powertrain Management / Computers and Control Systems / Procedures for system diagnosis. Testing and Inspection