Manual Air Conditioning

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" Automatic Air Conditioning.
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 (QR25DE) or "Component Function Check" Refrigerant Pressure Sensor (VQ35DE).
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace malfunctioning parts.

3. CHECK FRONT AIR CONTROL OUTPUT SIGNAL

With CONSULT
Check "FAN ON" and "" in "DATA MONITOR" mode of "" using CONSULT.





Is the inspection result normal?
YES- GO TO 4.
NO- Replace front air control. Refer to "Removal and Installation" Manual Air Conditioning.

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.
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.