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 / Door Does Not Lock/unlock and Engine Does Not Start (one I-Key/req Sw/push Sw) / 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. Check the inside of the Intelligent Key for rust or corrosion by water. Simultaneously check the internal circuits for damage. Squeeze, twist or bend the Intelligent Key and check the functionality again. Is the Intelligent Key operating normally?
Is the inspection result normal?
YES >>
GO TO 3.
NO >>
Replace Intelligent Key.
CHECK INTELLIGENT KEY BATTERY
1. Check the Intelligent Key battery.
Is the inspection result normal?
YES >>
GO TO 4.
NO >>
Replace Intelligent Key battery.
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. Confirm the operation after replacement.
Is the inspection result normal?
YES>>
Inspection End.
NO>>
Check intermittent incident. Refer to Intermittent Incident.

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 start when push-button i ...

Intelligent Key System All Functions Cannot Operate (one Key)

...

Other materials:

Description
Description All doors do not lock/unlock using Intelligent Key button. (One Intelligent Key has the symptom, other keys operate normally.) Note: Before starting diagnosis check that Nissan Sentra vehicle condition is as shown in “Conditions of vehicle”, and check each symp ...

Difference between predicted and actual distances
The distance guide line and the vehicle width guide line should be used as a reference only when the vehicle is on a level, paved surface. The distance viewed on the monitor is for reference only and may be different than the actual distance between the vehicle and displayed objects. Backing u ...

DTC/circuit diagnosis
POWER SUPPLY AND GROUND CIRCUIT A/C AUTO AMP. A/C AUTO AMP. : Diagnosis Procedure Regarding Wiring Diagram information, refer to HAC-145, "Wiring Diagram" or HAC-152, "Wiring Diagram". 1.CHECK FUSE Check fuses [No. 5, 8 and 21, located in the fuse block (J/B)]. NOTE: Ref ...