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Home >> Infiniti >> 2008 >> G35 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt Control System >> Component Diagnosis >> Seat Belt Buckle Switch (Driver Side) Circuit Check >> Component Function Check
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Component Function Check

  1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL

    With CONSULT-III

    When checking "BUCKLE SW LH" on DATA MONITOR screen, check that ON/OFF display changes synchronized with the insertion operation to the seat belt buckle.

    BUCKLE SW LH 

    When LH seat belt is not fastened OFF 

    When LH seat belt is fastened ON 

    Without CONSULT-III

    1. Turn the ignition switch ON.
    2. Check that voltage between LH seat belt buckle switch harness connector terminal 1 and ground is normal.
    TERMINALS VOLTAGE REFERENCE

    Terminal Measuring condition Voltage (V)
    (+) (-)
    1 Ground When seat belt is not fastened Approx. 0
    When seat belt is fastened Approx. 12

    Is the inspection result normal? 

    YES : LH seat belt buckle switch system is normal.

    NO : GO TO 2.

  2. CHECK LH SEAT BELT BUCKLE SWITCH HARNESS
    1. Turn the ignition switch OFF.
    2. Disconnect pre-crash seat belt control unit connector and LH seat belt buckle switch connector.
    3. Does continuity between pre-crash seat belt control unit harness connector terminal 10 and LH seat belt buckle switch harness connector terminal 1 exist?

      10 - 1 Existed 

    4. Does continuity between pre-crash seat belt control unit harness connector terminal 10 and ground exist?

      10 - Ground Not existed 

      Is the inspection result normal? 

      YES : Refer to "COMPONENT INSPECTION (DRIVER SEAT BELT BUCKLE SWITCH) ".

      NO : Repair or replace harness between pre-crash seat belt control unit and LH seat belt buckle switch.

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