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Home >> Lexus >> 2018 >> LC 500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 357 (Occupant Classification System - Diagnostics - Introduction) >> Occupant Classification System >> Diagnosis System [04/2013 - 10/2017] >> Diagnosis System [04/2013 - 10/2017]

Diagnosis System [04/2013 - 10/2017]

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  1. CHECK DLC3 
    1. Check the DLC3.

      Refer to GENERAL INFORMATION [04/2013 - ]

  2. FUNCTION OF PASSENGER AIRBAG ON/OFF INDICATOR 
    1. Initial check
      1. Turn the engine switch on (IG).
      2. The passenger airbag ON/OFF indicator comes on for approximately 4 seconds, then goes off for approximately 2 seconds.
      3. Approximately 6 seconds after the engine switch is turned on (IG), the passenger airbag ON/OFF indicator will indicate ON/OFF depending on the conditions listed below.
        INDICATOR OPERATION

        Front Passenger Seat Condition Passenger Airbag ON/OFF Indicator SRS Warning Light
        ON Indicator OFF Indicator
        Vacant OFF ON OFF
        Adult is seated ON OFF OFF
        Child is seated OFF ON OFF
        Child restraint system is installed
        Occupant classification system failure OFF ON ON

        HINT: 

        • The passenger airbag ON/OFF indicator illuminates based on the timing chart below in order to check the indicator light circuit.
        • When the occupant classification system has a malfunction, both the SRS warning light and passenger airbag ON/OFF indicator ("OFF") come on. In this case, check the DTCs in the airbag system first.
        GTY460751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR 
    1. Turn the engine switch on (IG).
      GTY467118Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the passenger airbag ON/OFF indicator ("ON" and "OFF") comes on for approximately 4 seconds, then goes off for approximately 2 seconds.

      HINT: 

      Refer to the indicator operation table in the preceding step regarding the passenger airbag ON/OFF indicator when the engine switch is turned on (IG) and approximately 6 seconds elapse.