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

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

Description

Symptom

  • Insufficient heating

  • No warm 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 REAR HEATER HOSE

Check installation of rear heater hose by visually or touching.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace parts depending on the inspection results.

CHECK REAR HEATER CORE

  1. Check temperature of inlet hose and outlet hose of rear heater core.

  2. Check that inlet side of rear heater core is hot and the outlet side is slightly lower than/almost equal to the inlet side.

    CAUTION:

    Always perform the temperature inspection in a short period of time because the engine coolant temperature is very hot.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Replace rear heater core. Refer to Removal and Installation.

CHECK AIR LEAKAGE FROM EACH DUCT

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

Is the inspection result normal?

YES>>

GO TO 4.

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>>

INSPECTION END

NO>>

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

    Other materials

    Input Oil Seal
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    Diagnosis and Repair Work Flow
    Work Flow OVERALL SEQUENCEDETAILED FLOWGET INFORMATION FOR SYMPTOM Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurs). Check operation condition of the function that is malfunctioning. >> GO TO 2. CHECK DTC ...

    Diagnosis and Repair Work Flow
    Work Flow OVERALL SEQUENCEDETAILED FLOWGET INFORMATION FOR SYMPTOM Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurs). Check operation condition of the function that is malfunctioning. >> GO TO 2. CHECK ...