The A/C Compressor Clutch Does Not Disengage When the A/C Switch Is Off

The A/C compressor clutch does not disengage when the A/C switch is off

Probable cause: The A/C compressor clutch circuit is on (energized) continuously, shorted to ground, stuck A/C compressor clutch relay, or the A/C compressor clutch is mechanically jammed

Do the A/C compressor clutch circuit troubleshooting A/C Compressor Clutch Circuit Troubleshooting, and repair any circuit problems

If the A/C compressor clutch circuit is OK, then do the A/C compressor clutch check Testing and Inspection, and repair any problems with the A/C compressor clutch

Also check for

The A/C compressor relief valve. If it has vented refrigerant to the atmosphere, correct the problem with the A/C compressor clutch or clutch circuit, then replace the relief valve Service and Repair.