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 with Door Request Switch and Intelligent Key / 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 POWER DOOR LOCK OPERATION
1. Check door lock/unlock using door lock and unlock switch.
Does door lock/unlock using door lock and unlock switch?
YES >>
GO TO 3.
NO >>
Refer to Component Function Check (driver side) or Component Function Check (passenger side).
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.

Description

Description All doors do not lock/unlock using door request switch or trunk does not open using trunk opener request switch or Intelligent Key button. SYMPTOM TABLE (BOTH INTELLIGENT KEYS ...

Intelligent Key Button Operation Has Poor Range (all Keys)

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Other materials:

Service data and specifications (SDS)
Idle speed *: Under the following conditions A/C switch: OFF Electric load: OFF (Lights, heater fan & rear window defogger) Steering wheel: Kept in straight-ahead position Ignition timing *: Under the following conditions A/C switch: OFF Electric load: OFF (Lights, hea ...

DTC/Circuit diagnosis
U0073 COMMUNICATION BUS A OFF DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes U0073 COMM BUS A OFF (Control Module Communication Bus A Off) TCM communication blockage lasts for 2 sec ...

Service
Service Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual. Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least three minutes. For approxim ...