Compressor Does Not Operate

COMPRESSOR DOES NOT OPERATE

Description

Symptom: Compressor does not operate.


Diagnosis Procedure

NOTE:
- Perform self-diagnoses with CONSULT before performing symptom diagnosis. If DTC is detected, perform the corresponding diagnosis.
- Check that refrigerant system is properly charged. If refrigerant amount is below the proper amount, perform inspection of refrigerant leakage.

1. CHECK MAGNET CLUTCH OPERATION

Check magnet clutch. Refer to "Component Function Check" Magnetic Clutch.
Does it operate normally?
YES- GO TO 2.
NO- Repair or replace malfunctioning parts.

2. CHECK REFRIGERANT PRESSURE SENSOR

Check refrigerant pressure sensor. Refer to "Component Function Check" Refrigerant Pressure Sensor.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace malfunctioning parts.

3. CHECK A/C AUTO AMP. OUTPUT SIGNAL

With CONSULT
Check "COMP REQ SIG" and "FAN REQ SIG" in "DATA MONITOR" mode of "HVAC" using CONSULT.





Is the inspection result normal?
YES- GO TO 4.
NO- Replace A/C auto amp. Refer to "Removal and Installation" Removal and Installation.

4. CHECK ECM INPUT SIGNAL

With CONSULT
Check "AIR COND SIG" and "HEATER FAN SW" in "DATA MONITOR" mode of "ECM" using CONSULT.





Is the inspection result normal?
YES- GO TO 5.
NO- Check CAN communication system. Refer to "Trouble Diagnosis Flow Chart" Trouble Diagnosis Flow Chart.

5. CHECK IPDM E/R INPUT SIGNAL

With CONSULT
1.Start engine.
Revision: March 20122013 Infiniti JX
2.Check "AC COMP REQ" in "DATA MONITOR" mode of "IPDM E/R" using CONSULT.





Is the inspection result normal?
YES- Inspection End.
NO- Check CAN communication system. Refer to "Trouble Diagnosis Flow Chart" Trouble Diagnosis Flow Chart.
Revision: March 20122013 Infiniti JX