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

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

Description

All doors do not lock/unlock using door request switch or trunk does not open using trunk opener request switch, and engine does not start when push-button ignition switch is pressed while carrying Intelligent Key.

Note:

Before starting diagnosis check that Nissan Sentra vehicle condition is as shown in “Conditions of vehicle”, and check each symptom.

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)
OK	NG	No crank, No start	OK

CONDITIONS OF Nissan Sentra Vehicle (OPERATING CONDITIONS)

“LOCK/UNLOCK BY I-KEY” setting in “Work support” mode of “HANDS FREE MODULE” is ON.
“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 OUTSIDE KEY ANTENNA AND INSIDE KEY ANTENNA
1. Use SIGNAL TECH II to check each outside key antenna and inside key antenna. For the inspection method and how to use SIGNAL TECH II, refer to “NISSAN/INFINITI SIGNAL TECH II USER GUIDE”.
Is the inspection result normal?
YES >>
GO TO 3.
NO >>
Repair or replace the malfunctioning parts.
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 4.
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 5.
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.

 All Doors Do Not Lock/unlock or Trunk/back Door Do Not Open with Request Switch

Description Description All doors do not lock/unlock using front door request switch or trunk does not open using trunk opener request switch. Note: Before starting diagnosis ch...

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

Description Description All doors do not lock/unlock using door request switch or trunk does not open using trunk opener request switch, Intelligent Key, and engine does not sta...

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