Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: Symptom Diagnosis / Intelligent Key System All Functions Cannot Operate (all Keys)

Nissan Sentra B18 (2020-2025) Service Manual: Intelligent Key System All Functions Cannot Operate (all Keys)

Description

Intelligent Key system all functions cannot operate (door lock and engine start).

SYMPTOM TABLE (BOTH INTELLIGENT KEYS HAVE THE SAME SYMPTOMS)


Door lock operation (remote keyless entry)	Door lock operation (request switch) or trunk open operation (opener switch of trunk lid)	Engine started with push-button ignition switch operation (registered Intelligent Key is within the detection area of inside key antenna)	Engine started with push-button ignition switch operation (registered Intelligent Key placed next to push-button ignition switch)
NG	NG	No start	No start

CONDITIONS OF Nissan Sentra Vehicle (OPERATING CONDITIONS)

“ENGINE START BY I-KEY” setting in “Work support” mode of “HANDS FREE MODULE” is ON.

DIAGNOSIS PROCEDURE

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK INTELLIGENT KEY SYSTEM SYMPTOM TABLE
1. Check Intelligent Key system symptom table.
  
  Refer to Diagnosis Procedure.
>>
GO TO 2.
CHECK INTELLIGENT KEY-1
1. For both Intelligent Key that cannot be used for door lock and unlock, check that the Intelligent Key belongs to the Nissan Sentra vehicle to be checked.
  - Check if the Intelligent Key that is checked is the Intelligent Key for a different NISSAN/INFINITI Nissan Sentra vehicle that the user owns.
  - Check that the Intelligent Key buttons match the vehicle specifications.
Does the Intelligent Key belong to the Nissan Sentra vehicle to be checked?
YES >>
GO TO 3.
NO >>
Check Intelligent Key button operation using a registered Intelligent Key that belongs to the Nissan Sentra vehicle.
CHECK INTELLIGENT KEY-2
1. Check the inside of the both Intelligent Key for rust or corrosion by water. Simultaneously check the internal circuits for damage.
Is the inspection result normal?
YES >>
GO TO 4.
NO >>
Replace Intelligent Key.
REGISTER INTELLIGENT KEY
1. 1. Register the Intelligent Key again.
  2. Check operation after replacement.
Is the inspection result normal?
YES >>
Inspection End.
NO >>
GO TO 5.
REPLACE INTELLIGENT KEY
1. 1. Replace the Intelligent Key and perform registration again.
  2. Check operation after replacement.
Is the inspection result normal?
YES >>
Inspection End.
NO >>
GO TO 6.
REPLACE INTELLIGENT KEY UNIT
1. 1. Replace Intelligent Key unit. Refer to Removal and installation.
  2. Check the operation after replacement.
Is the inspection result normal?
YES>>
Inspection End.
NO>>
Check intermittent incident. Refer to Intermittent Incident.

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