No. 23 A/C Does Not Work Sufficiently [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

23	A/C DOES NOT WORK SUFFICIENTLY
DESCRIPTION	A/C compressor magnetic clutch does not engage when the A/C switch is turned on
POSSIBLE CAUSE	Improper refrigerant charging amount Open the A/C magnetic clutch Open circuit in wiring harness between A/C relay and A/C 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^1 /IG2 relay^2 Poor ground of A/C magnetic clutch Refrigerant pressure sensor malfunction A/C relay is stuck open Seized A/C compressor Climate control unit malfunction (A/C switch signal stuck off) Communication error between PCM and climate control unit

A/C DOES NOT WORK SUFFICIENTLY

DESCRIPTION

A/C compressor magnetic clutch does not engage when the A/C switch is turned on

POSSIBLE CAUSE

Improper refrigerant charging amount
Open the A/C magnetic clutch
Open circuit in wiring harness between A/C relay and A/C 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^*1 /IG2 relay^*2
Poor ground of A/C magnetic clutch
Refrigerant pressure sensor malfunction
A/C relay is stuck open
Seized A/C compressor
Climate control unit malfunction (A/C switch signal stuck off)
Communication error between PCM and climate control unit