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SEAT BELT WARNING SYSTEM(w/o Occupant Classification System) Driver Side Seat Belt Warning Light does not Operate

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DTC Code DTC Name
  Driver Side Seat Belt Warning Light does not Operate
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DESCRIPTION

The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the state of the front seat inner belt assembly (for Driver Seat).

B004R5VE06
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WIRING DIAGRAM

for LHD:

for RHD:

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CAUTION / NOTICE / HINT

Note:

  • The seat belt warning system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

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  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

  • Replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

Tip:

  • The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. Check that the operation of the seat belt warning light is normal first.

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  • If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter assembly.

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PROCEDURE


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    CHECK DTC OUTPUT (AIRBAG SYSTEM)


    1. Clear the DTCs.

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      1. Body Electrical > SRS Airbag > Clear DTCs


    2. Check for DTCs.

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      1. Body Electrical > SRS Airbag > Trouble Codes


      OK
      DTCs are not output.
      Result
      Proceed to
      OK
      NG

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    READ VALUE USING GTS (DRIVER SIDE BUCKLE SW)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Read the Data List according to the display on the GTS.


      1. for LHD


        1. Body Electrical > SRS Airbag > Data List
          Tester Display Measurement Item Range Normal Condition Diagnostic Note
          Left side Buckle SW LH buckle switch signal Unset, Set or NG

          Unset: Seat belt not fastened

          Set: Seat belt fastened

          NG: Data is not determined

          		 -



        1. Body Electrical > SRS Airbag > Data List
          Tester Display
          Left side Buckle SW




      2. for RHD


        1. Body Electrical > SRS Airbag > Data List
          Tester Display Measurement Item Range Normal Condition Diagnostic Note
          Right side Buckle SW RH buckle switch signal Unset, Set or NG

          Unset: Seat belt not fastened

          Set: Seat belt fastened

          NG: Data is not determined

          		 -



        1. Body Electrical > SRS Airbag > Data List
          Tester Display
          Right side Buckle SW




      Result
      Result Proceed to
      Unset or Set is displayed on the GTS according to the driver seat belt condition A
      Unset or Set is not displayed correctly on the GTS according to the driver seat belt condition B
      NG is displayed on the GTS C

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    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Replace the main body ECU (multiplex network body ECU) with a new one.

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      Result
      Proceed to
      NEXT

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    CHECK SEAT BELT WARNING SYSTEM (ON-VEHICLE INSPECTION)


    1. Check the seat belt warning system operation.

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      OK
      The seet belt warning function is operated normally.
      Result
      Proceed to
      OK
      NG

    • OK

      END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)

    • NG

      REPLACE COMBINATION METER ASSEMBLYClick here