Home Vehicle Interior Seat Belt SEAT BELT WARNING SYSTEM
Last Modified: 11-27-2007 1.6 J
Service Category: Vehicle Interior Section: Seat Belt
Model Year: 2008 Model: LX570 Doc ID: RM0000014DK020X
Title: SEAT BELT: SEAT BELT WARNING SYSTEM: DESCRIPTION (2008 LX570)

Driver Side Seat Belt Warning Light does not Operate

DESCRIPTION

When the engine switch is on (IG), the center airbag sensor transmits front seat inner belt state signals to the combination meter through the CAN. If the driver seat belt is not fastened, the combination meter blinks the driver side seat belt warning light. If the seat belt is fastened, the warning light turns off.

WIRING DIAGRAM



INSPECTION PROCEDURE

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Result

Result

Proceed to

DTC is not output

A

CAN system DTC is output

B

Airbag system DTC is output

C

A

2.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Operate the Techstream according to the steps on the display and select Active Test.

Combination Meter

Item

Test Part

Control Range

Diagnostic Note

Driver Side Seat Belt

Driver side seat belt warning light

ON or OFF

Confirm that the Vehicle is Stopped and Engine Idling

OK:

Driver side seat belt warning light condition can be switched by Active Test.

OK

3.

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

(a) Temporarily replace the center airbag sensor with a new one SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: REMOVAL (2008 LX570) .

NEXT

4.

CHECK DRIVER SIDE SEAT BELT WARNING LIGHT

(a) Check the driver side seat belt warning light function SEAT BELT: SEAT BELT WARNING SYSTEM: OPERATION CHECK (2008 LX570) .

OK:

Driver side seat belt warning light operates normally.

OK