Meter / Gauge System Seat Belt Warning Light For Driver Seat Does Not Operate

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Meter. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SUPPLEMENTAL RESTRAINT SYSTEM

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SEAT BELT WARNING LIGHT FOR DRIVER SIDE)

INSPECT INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY (SEAT BELT WARNING LIGHT FOR DRIVER SIDE)

METER / GAUGE SYSTEM - Seat Belt Warning Light for Driver Seat does not Operate


DESCRIPTION

When the engine switch is on (IG), the center airbag sensor communicates the status of the front seat inner belt (driver side) to the combination meter using the BEAN line. When the seat belt is unfastened, the combination meter flashes the driver side seat belt warning light on the combination meter. When the seat belt is fastened, the combination meter stops flashing the warning light.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Seat Belt Warning Light For Driver Seat Does Not Operate


Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Seat Belt Warning Light For Driver Seat Does Not Operate


INSPECTION PROCEDURE

1.CHECK SUPPLEMENTAL RESTRAINT SYSTEM

  1. Check for supplemental restraint system (SRS) DTCs.

    Result:
    Result
    		Proceed
    No SRS DTCs are output
    		A
    SRS DTCs are output
    		B


B
GO TO SUPPLEMENTAL RESTRAINT SYSTEM
A


2.PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SEAT BELT WARNING LIGHT FOR DRIVER SIDE)

  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the seat belt warning light operates.

    Combination meter:

    Item
    		Test Details
    		Diagnostic Note
    Indicat. Lamp D-Seat Belt
    		Seat belt warning light for driver side/ OFF or ON
    		Confirm that vehicle is stopped and engine is idling
OK:
Seat belt warning light for driver side operates normally.


OK
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
NG


3.INSPECT INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY (SEAT BELT WARNING LIGHT FOR DRIVER SIDE)


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the panel sub-assembly.

  1. Apply battery voltage and check that the seat belt warning light illuminates.

    OK:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 11
    Battery negative (-) → Terminal 6
    		Seat belt warning light illuminates
    HINT:
    When the battery's negative (-) lead is applied to terminal 11 and the positive (+) lead is applied to terminal 6, the seat belt warning light does not illuminate.


NG
REPLACE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY
OK

REPLACE COMBINATION METER