Seat Belt Warning System Driver Side Seat Belt Warning Light Does Not Operate

Restraints. Lexus Is250, Is220D. Gse20 Ale20
Seat Belt. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

CHECK DTCS

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


DESCRIPTION

When the engine switch on (IG), the center airbag sensor assembly transmits front seat inner belt state signals to the combination meter assembly though the CAN and BEAN. If the driver seat belt is not fastened, the combination meter assembly blinks the driver seat belt warning light. If the seat belt is fastened, the warning light goes off.
NOTICE:
The seat belt warning system uses the CAN and BEAN. Before troubleshooting the seat belt warning system, perform "COMMUNICATION FUNCTION CHECK" by following "HOW TO PROCEED WITH TROUBLESHOOTING" to confirm that the communication systems are normal.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Seat Belt.Occupant Detection Sensor (For Manual Seat).Seat Belt Warning System Driver Side Seat Belt Warning Light Does Not Operate


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Operate the intelligent tester according to the steps on the display and select "ACTIVE TEST".


Combination Meter:

Item
Test Details
Diagnostic Note
Indicat. lamp D-seat Belt
D-SEAT BELT indicator light (OFF/ON)
Confirm that the vehicle is stopped with the engine idling
OK:
Switch condition (ON/OFF) can be switched by "ACTIVE TEST".


NG
GO TO COMBINATION METER SYSTEM
OK


2.CHECK DTCS
HINT:
Click here

  1. Check DTCs.


Result:

B1655 is output
B
B1655 is not output
A


B
GO TO AIRBAG SYSTEM
A

REPLACE CENTER AIRBAG SENSOR ASSEMBLY