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3 Sport, 4D Hatchback, Standard Trans
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Symptom Troubleshooting - Engine Control System
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No. 23 A/C Does Not Work Sufficiently
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Notes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
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
PCM, instrument cluster or climate control unit DTC is stored
Refrigerant pressure sensor malfunction
Improper refrigerant charging amount
Seized A/C compressor
Evaporator temperature sensor malfunction
Open or short circuit in wiring harness between the following terminals:
Evaporator temperature sensor terminal B-Climate control unit terminal H (with manual air conditioner)
Evaporator temperature sensor terminal A-Climate control unit terminal K (with manual air conditioner)
Evaporator temperature sensor terminal B-Climate control unit terminal J (with full-auto air conditioner (single air mix actuator type))
Evaporator temperature sensor terminal A-Climate control unit terminal E (with full-auto air conditioner (single air mix actuator type))
Evaporator temperature sensor terminal B-Climate control unit terminal 1L (with full-auto air conditioner (dual air mix actuator type))
Evaporator temperature sensor terminal A-Climate control unit terminal 1J (with full-auto air conditioner (dual air mix actuator type))
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 A/C request signal)
Open circuit in wiring harness between magnetic clutch and body ground
A/C relay stuck open
Open circuit in wiring harness between the following terminals:
Front body control module (FBCM) terminal 1C-A/C relay terminal A
Battery positive terminal-A/C relay terminal C
A/C relay terminal D-Magnetic clutch terminal A
A/C relay terminal E-PCM terminal 2AF