No.23 A/C Does Not Work Sufficiently: Notes

23	A/C DOES NOT WORK SUFFICIENTLY
DESCRIPTION	A/C compressor magnetic clutch does not engage when A/C switch is turned on.
POSSIBLE CAUSE	Improper refrigerant charging amount Refrigerant pressure sensor malfunction Evaporator temperature sensor malfunction Instrument cluster malfunction (does not receive A/C request switch from climate control unit or transmit it to PCM) Climate control unit malfunction (A/C switch malfunction or climate control unit does not determine A/C request or transmit the A/C request signal.) Communication error between instrument cluster and climate control unit Communication error between PCM and instrument cluster Poor ground of magnetic clutch Open the magnetic clutch A/C relay is stuck open. Seized A/C compressor Open circuit in wiring harness between A/C relay and PCM Open circuit in wiring harness between A/C relay and ignition switch (IG2) Open circuit in wiring harness between A/C relay and battery Open circuit in wiring harness between A/C relay and magnetic clutch PCM malfunction