No. 23 A/C Does Not Work Sufficiently: Notes
SYMPTOM TROUBLESHOOTING - NO. 23 A/C DOES NOT WORK SUFFICIENTLY [L3]
| 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 instrument cluster display DTC is stored
- Climate control unit or information display
- DTC is stored (Full-auto air conditioner)
- BCM DTC is stored (Manual air conditioner)
- Refrigerant pressure switch malfunction
- Improper refrigerant charging amount
- Seized A/C compressor
- Evaporator temperature sensor amount
- Open or short circuit in wiring harness between evaporator temperature sensor and climate control unit
- Instrument cluster malfunction (Does not receive A/C request signal from climate control unit or transmit it to PCM)
- Information display 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)
- Fan switch malfunction (Manual air conditioner)
- Open circuit in wiring harness between fan switch terminal C and climate control unit terminal C (Manual air conditioner)
- Open or short circuit in wiring harness between climate control unit terminal E and BCM terminal 3S (manual air conditioner)
- A/C compressor malfunction
- A/C relay malfunction (stuck open)
- Open circuit in wiring harness between A/C relay and PCM terminal 11
- Open circuit in wiring harness between BCM terminal 1F 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 A/C magnetic clutch
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