A/C Does Not Work Sufficiently: Notes

A/C DOES NOT WORK SUFFICIENTLY (SKYACTIV-G) DESCRIPTION AND POSSIBLE CAUSE

Troubleshooting item	A/C does not work sufficiently
Description	A/C compressor magnetic clutch does not engage when A/C switch is turned on. Compressor valve inoperative
Possible cause	PCM, body control module (BCM) or dash-electrical supply unit DTC is stored Refrigerant pressure sensor No. 1 malfunction Refrigerant pressure sensor No. 2 malfunction Improper refrigerant charging amount Seized A/C compressor Evaporator temperature sensor malfunction Short or open circuit in any of the following evaporator temperature sensor circuits. Signal circuit Ground circuit Body control module (BCM) malfunction (Does not receive A/C request signal 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 A/C request signal) Open circuit in wiring harness between magnetic clutch and body ground A/C relay stuck open Compressor valve malfunction (built-into A/C compressor) Open circuit in A/C relay primary side power supply circuit Open circuit in A/C relay secondary side power supply circuit Open circuit in A/C relay control circuit Open circuit in magnetic clutch power supply circuit Open circuit in compressor valve power supply circuit Open circuit in compressor valve control circuit
Courtesy of MAZDA MOTORS CORP.
Courtesy of MAZDA MOTORS CORP.

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.