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Home >> Infiniti >> 2010 >> FX50 >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt Control System >> Component Diagnosis >> DTC B2458: Local Comm >> Diagnosis Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnosis Procedure

  1. CHECK PRE-CRASH-SEAT BELT CONTROL UNIT (PASSENGER SIDE) 

    Check pre-crash seat belt control unit (passenger side) power supply. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal? 

    YES: GO TO  2.

    NO: Repair or replace harness between pre-crash seat belt control unit (passenger side) connector and fusible link.

  2. CHECK LOCAL COMMUNICATION LINE CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect pre-crash seat belt control unit (driver side and passenger side) connector.
    3. Check continuity between local communication line harness connector.
      CONTINUITY TABLE

      Pre-crash seat belt control unit (driver side) Pre-crash seat belt control unit (passenger side) Continuity
      Connector Terminal Connector Terminal
      B9 8 B211 8 Existed
      16 16
    4. Check continuity between pre-crash seat belt control unit (driver side) harness connector and ground.
    CONTINUITY TABLE

    Pre-crash seat belt control unit (driver side) Ground Continuity
    Connector Terminal
    B9 8 Not existed
    16

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: Repair or replace local communication line.

  3. REPLACE PRE-CRASH SEAT BELT CONTROL UNIT (PASSENGER SIDE) 
    1. Replace pre-crash seat belt control unit (passenger side)
    2. Check "Self-diagnostic result" with CONSULT-III.

    Is DTC detected? 

    YES: GO TO  4.

    NO: INSPECTION END

  4. REPLACE PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE) 
    1. Replace pre-crash seat belt control unit (driver side)
    2. Check "Self-diagnostic result" with CONSULT-III.

    Is DTC detected? 

    YES: GO TO  5.

    NO: INSPECTION END

  5. CHECK INTERMITTENT INCIDENT 

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END