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

NO. 23 A/C DOES NOT WORK SUFFICIENTLY REFERENCE CHART (MZI-3.7)

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	PCM or climate control unit DTC is stored Refrigerant pressure sensor malfunction Improper refrigerant charging amount Seized A/C compressor Front evaporator temperature sensor malfunction Open or short circuit in wiring harness between front evaporator temperature sensor and front climate control unit Instrument cluster 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 the A/C request signal) Open or short circuit in wiring harness between front climate control unit terminal 2A and instrument cluster terminal 1C A/C compressor malfunction Open circuit in wiring harness between magnetic clutch terminal A and body ground A/C relay malfunction Open circuit in wiring harness between A/C relay and PCM terminal 2W Open circuit in wiring harness between main relay No. 1 and A/C relay Open circuit in wiring harness between battery positive terminal and A/C relay Open circuit in wiring harness between A/C relay and magnetic clutch

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

PCM or climate control unit DTC is stored
Refrigerant pressure sensor malfunction
Improper refrigerant charging amount
Seized A/C compressor
Front evaporator temperature sensor malfunction
Open or short circuit in wiring harness between front evaporator temperature sensor and front climate control unit
Instrument cluster 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 the A/C request signal)
Open or short circuit in wiring harness between front climate control unit terminal 2A and instrument cluster terminal 1C
A/C compressor malfunction
Open circuit in wiring harness between magnetic clutch terminal A and body ground
A/C relay malfunction
Open circuit in wiring harness between A/C relay and PCM terminal 2W
Open circuit in wiring harness between main relay No. 1 and A/C relay
Open circuit in wiring harness between battery positive terminal and A/C relay
Open circuit in wiring harness between A/C relay and magnetic clutch