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Nissan Armada 2025-2026 Service and Repair Manual: Front Air Conditioner

Nissan Armada 2025-2026 Service and Repair Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System / Insufficient Cooling / Front Air Conditioner

Description

Symptom

  • Insufficient cooling

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

Diagnosis Procedure

NOTE:

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

CHECK MAGNET CLUTCH OPERATION

  1. Ignition switch ON.

  2. Touch fan switch and operate front blower fan.

  3. Touch A/C switch.

  4. Check visually and by sound that compressor operates.

  5. Touch A/C switch again.

  6. Check that compressor stops.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Perform diagnosis of “COMPRESSOR DOES NOT OPERATE” in “SYMPTOM DIAGNOSIS”. Refer to Diagnosis Procedure.

CHECK DRIVE BELT

Check tension of drive belt. Refer to Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Adjust or replace drive belt depending on the inspection results.

CHECK REFRIGERANT CYCLE PRESSURE

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 4.

NO>>

Repair or replace parts depending on the inspection results.

CHECK ECV

Perform ECV circuit diagnosis. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace parts depending on the inspection results.

CHECK AIR LEAKAGE FROM EACH DUCT

Check duct and nozzle, etc. of the air conditioning system for leakage.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace parts depending on the inspection results.

CHECK SUNLOAD SENSOR

Perform sunload sensor diagnosis. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair or replace parts depending on the inspection results.

CHECK SETTING OF TEMPERATURE SETTING TRIMMER

  1. Check setting value of temperature setting trimmer. Refer to CONSULT Function.

  2. Check that temperature setting trimmer is set to “+ direction”.

    NOTE:

    The control temperature can be set with the setting of the temperature setting trimmer.

  3. Set difference between the 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.

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