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

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

Description

Intelligent Key system all functions cannot operate (door lock and engine start). (One Intelligent Key has the symptom, other keys operate normally.)

SYMPTOM TABLE (ONE INTELLIGENT KEY HAS THE SYMPTOM, OTHER KEYS OPERATE NORMALLY)


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 (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 crank, No start	No crank, No start

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 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.
Does the Intelligent Key belong to the 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 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 the 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 operation after replacement.
Is the inspection result normal?
YES>>
Inspection End.
NO>>
Check intermittent incident. Refer to Intermittent Incident.

 Door Does Not Lock/unlock and Engine Does Not Start (one I-Key/req Sw/push Sw)

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