Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Symptom

Insufficient cooling
No cool air comes out. (Air flow volume is normal.)

NOTE: Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis.

CHECK REFRIGERANT CYCLE
Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge. Refer to Symptom Table .

Is the inspection result normal?

YES

GO TO 2.

NO

Repair or replace parts depending on the inspection results.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the rear air conditioning system for leakage.

Is the inspection result normal?

YES

GO TO 3.

NO

Repair or replace parts depending on the inspection results.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER (REAR)
1. Check setting value of temperature setting trimmer (rear). Refer to Temperature Setting Trimmer (Rear) .
2. Check that temperature setting trimmer (rear) is set to "+ direction".
  NOTE: The control temperature can be set with the setting of the temperature setting trimmer (rear).
3. Set difference between set temperature and control temperature to "0".
Is inspection result normal?

YES

Inspection End.

NO

Replace A/C auto amp. Refer to Removal and Installation .