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Home >> Infiniti >> 2008 >> G37 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt Control System >> Component Diagnosis >> Seat Belt Buckle Switch (Passenger Side) Circuit Check >> Component Function Check

Component Function Check

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

    With CONSULT-III 

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

    BUCKLE SW RH 

    When RH seat belt is not fastened OFF 

    When RH seat belt is fastened ON 

    Without CONSULT-III 

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

    Terminal Measuring condition Voltage (V)
    (+) (-)
    1 Ground When seat belt is not fastened Approx. 0
    When seat belt is fastened Approx. 5

    Is the inspection result normal? 

    YES: RH seat belt buckle switch system is normal.

    NO: GO TO  2.

  2. CHECK RH SEAT BELT BUCKLE SWITCH HARNESS
    1. Turn the ignition switch OFF.
    2. Disconnect pre-crash seat belt control unit connector and RH seat belt buckle switch connector.
    3. Does continuity between pre-crash seat belt control unit harness connector terminal 8 and RH seat belt buckle switch harness connector terminal 1 exist?

      8 - 1 Existed 

    4. Does continuity between pre-crash seat belt control unit harness connector terminal 8 and ground exist?

      8 - Ground Not existed 

    Is the inspection result normal? 

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

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

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