Nissan Armada 2025-2026 Service and Repair Manual: Diagnosis Procedure
NOTE:
CHECK COOLING SYSTEM
Check engine coolant level and check for leakage. Refer to ENGINE COOLANT : Inspection.
Check reservoir tank cap. Refer to RESERVOIR TANK CAP : Inspection.
Check water flow sounds of the engine coolant. Refer to ENGINE COOLANT : Refilling.
Is the inspection result normal?
YES>>GO TO 2.
NO>>Refill engine coolant and repair or replace the parts depending on the inspection results.
CHECK FRONT HEATER HOSE
Check installation of front heater hose by visually or touching.
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace parts depending on the inspection results.
CHECK FRONT HEATER CORE
Check temperature of inlet hose and outlet hose of front heater core.
Check that inlet side of front 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 4.
NO>>Replace front heater core. Refer to Removal and Installation.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioning system for air leakage.
Is the inspection result normal?
YES>>GO TO 5.
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 6.
NO>>Repair or replace parts depending on the inspection results.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Check setting value of temperature setting trimmer. Refer to CONSULT Function.
Check that temperature setting trimmer is set to “− direction”.
NOTE:The control temperature can be set by the temperature setting trimmer.
Set difference between the set temperature and control temperature to “0”.
Are the symptoms solved?
YES>>INSPECTION END
NO>>Replace A/C auto amp. Refer to Removal and Installation.
Front Air Conditioner
Symptom
Insufficient heating
No warm air comes out. (Air flow volume is normal.)
...
Rear Air Conditioner
Symptom
Insufficient heating
No warm air comes out. (Air flow volume is normal.)
...
Other materials:
Diagnosis Procedure
CHECK DTC OF AIR BAG DIAGNOSIS SENSOR UNIT
Check DTC in “Self Diagnosis Result” mode of “AIR BAG” using CONSULT.
Is DTC detected?
YES>>
Perform trouble diagnosis related to the detected DTC. Refer to DTC Index.
NO>>
GO TO 2.
CHECK DTC OF BCM
Check DTC in “Self Diagnosis Resul ...
PRECAUTIONS FOR REMOVING BATTERY TERMINAL : Precautions
NOTE:
NOTE:
NOTE:
The removal of 12V battery may cause a DTC detection error.
HOW TO DISCONNECT 12V BATTERY TERMINAL
Disconnect 12V battery terminal according to instruction described below.
Open the hood.
Turn ignition switch to the ON position.
Turn ignition switch to the OFF position with the d ...
Exploded View
Bracket Side oil seal Rear final drive assembly Differential lock position switch Rear cover Gasket Drain plug Stud bolt Filler plug O-ring : N·m (kg-m, in-lb) : N·m (kg-m, ft-lb) : Always replace after every disassembly. : Apply gear oil. : Apply Genuine Liquid Gasket, Three Bond 1217 ...
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