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

23	A/C DOES NOT WORK SUFFICIENTLY
DESCRIPTION	The A/C compressor magnetic clutch does not engage when the A/C is turned on.
POSSIBLE CAUSE	Improper refrigerant charge amount Open A/C compressor magnetic clutch Open circuit in wiring harness between A/C relay and PCM Open circuit in wiring harness between A/C relay and battery Open circuit in wiring harness between A/C relay and ignition switch Open circuit in wiring harness between A/C relay and A/C magnetic clutch Poor ground of A/C magnetic clutch Improper A/C magnetic clutch clearance Refrigerant pressure switch is stuck open Evaporator temperature sensor malfunction 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) A/C relay is stuck open Improper A/C cut-off control PCM malfunction
Courtesy of MAZDA MOTORS CORP.