Seat Belt Warning System How To Proceed With Troubleshooting

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

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM (CAN)*

  5. PROBLEM SYMPTOMS TABLE

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*

  7. REPAIR OR REPLACE

  8. CONFIRMATION TEST

Seat Belt Warning System -- How To Proceed With Troubleshooting


HINT:
  1. Use these procedures to troubleshoot the seat belt warning system.
  2. *: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT BATTERY VOLTAGE
      Standard voltage:
      11 to 14 V
      If the voltage is below 11 V, recharge or replace the battery before proceeding.

    NEXT


    3.CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

    1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

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



    		B.
    GO TO MULTIPLEX COMMUNICATION SYSTEM
    A


    4.CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM (CAN)*

    1. Use the intelligent tester to check if the CAN Communication System (CAN) is functioning normally.

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



    		B.
    GO TO CAN COMMUNICATION SYSTEM
    A


    5.PROBLEM SYMPTOMS TABLE
      HINT:
      Click here

    NEXT


    6.OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. DATA LIST / ACTIVE TEST (Click here)

    2. Terminals of ECU (Click here)

    3. On-vehicle Inspection (Click here)


    NEXT


    7.REPAIR OR REPLACE

      NEXT


      8.CONFIRMATION TEST

        NEXT

        END