Nissan Versa Sedan Service ManualVentilation, heater & air conditioner » Heater & air conditioning control system (HAC)
Insufficient cooling
Insufficient cooling
Description
Symptom
- Insufficient cooling
- No cool air comes out. (Air flow volume is normal.)
Diagnosis Procedure
NOTE: Perform self-diagnosis with CONSULT before performing symptom diagnosis. If any malfunction result or DTC is detected, perform the corresponding diagnosis.
1.CHECK MAGNET CLUTCH OPERATION
- Turn ignition switch ON.
- Turn fan control dial ON.
- Press A/C switch.
- Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
- Press A/C switch again.
- Check that A/C indicator turns OFF. Check that compressor stops.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check compressor operation. Refer to HAC "Diagnosis Procedure".
2.CHECK DRIVE BELT
Check tension of drive belt. Refer to EM "Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjust or replace drive belt depending on the inspection results.
3.CHECK REFRIGERANT CYCLE PRESSURE
Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection using gauge. Refer to HA "Symptom Table".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace parts depending on the inspection results.
4.CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioner system for leakage.
Is the inspection result normal?
YES >> Check air mix door cable installation and air mix door operation.
NO >> Repair or replace parts depending on the inspection results.