Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis Procedure

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) / 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.

Description

Description Intelligent Key system all functions cannot operate (door lock and engine start). SYMPTOM TABLE (BOTH INTELLIGENT KEYS HAVE THE SAME SYMPTOMS) ...

Door Does Not Lock/unlock with Intelligent Key

...

Other materials:

P2127, P2128 APP Sensor
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P2127 APP SEN 2/CIRC (Throttle/Pedal position sensor/switch вЂњEвЂќ circuit low) An excessively low voltage from the APP ...

Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as вЂњAIR BAGвЂќ and вЂњSEAT BELT PRE-TENSIONERвЂќ, used along with a front seat belt, helps to reduce the risk or severity of injur ...

B20c7-15 A/c Clutch
Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition ...