SEAT BELT WARNING SYSTEM > Driver Side Seat Belt Warning Light does not Operate

for Preparation Click here


DESCRIPTION

When the power switch is on (IG), the airbag sensor assembly transmits front seat inner belt (for driver) status signals to the combination meter assembly via CAN communication. If the driver seat belt is not fastened, the combination meter assembly blinks the seat belt warning light. If the driver seat belt is fastened, the seat belt warning light goes off.

WIRING DIAGRAM


B271747E02


INSPECTION PROCEDURE

NOTICE:
The seat belt warning system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure (Click here).

1.CHECK DTC OUTPUT (AIRBAG SYSTEM)

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		B



B
GO TO AIRBAG SYSTEM (Click here)
A


2.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / SRS Airbag / Data List.

  1. Read the Data List according to the display on the intelligent tester.

    SRS Airbag (Airbag Sensor Assembly) 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Left side Buckle SW*1
    		LH buckle switch/Unset, Set or NG
    		Unset: Seat belt not fastened
    Set: Seat belt fastened
    NG: Data is not determined
    		-
    Right side Buckle SW*2
    		RH buckle switch/Unset, Set or NG
    		Unset: Seat belt not fastened
    Set: Seat belt fastened
    NG: Data is not determined
    		-

    1. *1: for LHD
    2. *2: for RHD
    Result 
    Result
    		Proceed to
    Unset or Set is displayed on the tester screen according to the driver seat belt condition
    		A
    Unset or Set is not displayed normally on the tester screen according to the driver seat belt condition
    (for Manual Seat)
    		B
    Unset or Set is not displayed normally on the tester screen according to the driver seat belt condition
    (for Power Seat)
    		C
    NG is displayed on the tester screen
    		D



B
REPLACE FRONT SEAT INNER BELT ASSEMBLY (FOR DRIVER) (Click here)

C
REPLACE FRONT SEAT INNER BELT ASSEMBLY (FOR DRIVER) (Click here)

D
REPLACE AIRBAG SENSOR ASSEMBLY (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)