Nissan Armada 2025-2026 Service and Repair Manual: Diagnosis Procedure

NOTE:

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.