Toyota
Nissan Versa
 Sedan Service Manual
Ventilation, heater & air conditioner » Heater & air conditioning control system (HAC)
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

  1. Turn ignition switch ON.
  2. Turn fan control dial ON.
  3. Press A/C switch.
  4. Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
  5. Press A/C switch again.
  6. 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.

    More about «Heater & air conditioning control system (HAC)»:

    Precautions

    Manual air conditioning system

    Diagnosis and repair workflow

    Operation inspection

    A/C On signal

    Blower fan on signal

    A/C Indicator

    Front blower motor

    Magnet clutch

    Insufficient cooling

    Insufficient heating

    Compressor does not operate

    Front air control

    Refrigerant pressure sensor

    Blower fan resistor

    Intake door cable

    Mode door cable

    Air mix door cable

    Nissan Versa Sedan Service Manual / Ventilation, heater & air conditioner / Heater & air conditioning control system (HAC) / Insufficient cooling

    Nissan Versa Sedan Service Manual

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