RX400h · Service Manual RESTRAINTS

Seat Belt Warning Light for Driver Seat does not Operate

Circuit diagnosis

DESCRIPTION

When turning the ignition switch ON, the combination meter assembly communicates with the supplemental restraint system by the multiplex communication system. Unless the driver side seat belt is fastened, the combination meter assembly will turn on the seat belt warning light for driver side. If the driver side seat belt is fastened, then the combination meter assembly will turn off the driver side seat belt warning light.

WIRING DIAGRAM

B111219E01

INSPECTION PROCEDURE


1. PERFORM ACTIVE TEST USING 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
D-BELT REMIND
D-SEAT BELT indicator light (OFF/ON)
-

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.

B0120 is output
B
B0120 is not output
A


B
GO TO AIRBAG SYSTEM
A

REPLACE AIR BAG SENSOR ASSEMBLY CENTER


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