Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Security Control System :: Intelligent Key System / Symptom Diagnosis / Door Does Not Lock/unlock and Engine Does Not Start (req Sw/push Sw) (one Key)

Nissan Sentra B18 (2020-2025) Service Manual: Door Does Not Lock/unlock and Engine Does Not Start (req Sw/push Sw) (one Key)

Diagnosis Procedure

Diagnosis Procedure

DESCRIPTION

Door does not lock/unlock with door request switch, and engine does not start when push-button ignition switch is pressed while carrying Intelligent Key. (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 of front/rear/back door) or trunk/back door open operation (opener switch of trunk/back door panel)	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)
OK	NG	No crank, No start	OK

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 LOW BATTERY WARNING
1. Check that the Intelligent Key low battery warning operates.
Is the Intelligent Key low battery warning operated?
YES >>
Replace Intelligent Key battery. Refer to Removal and Installation.
NO >>
GO TO 3.
CHECK INTELLIGENT KEY BATTERY
1. Check the Intelligent Key battery.
  
  Refer to Component Inspection.
Is the inspection result normal?
YES >>
GO TO 4.
NO >>
Replace Intelligent Key battery. Refer to Removal and Installation.
REGISTER INTELLIGENT KEY
1. CONSULT
  1. Register the Intelligent Key. Refer to CONSULT immobilizer mode and follow the on-screen instructions.
  2. Check operation after replacement.
Is the inspection result normal?
YES>>
Inspection End.
NO>>
GO TO 5.
REPLACE INTELLIGENT KEY
1. CONSULT
  1. Replace the Intelligent Key and perform registration again. Refer to CONSULT immobilizer mode and follow the on-screen instructions.
  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.

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