LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2018 >> RX 350 Base, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Occupant Classification System - Diagnostics - Introduction >> Occupant Classification System >> Diagnosis System [08/2016 - ] >> Diagnosis System [08/2016 - ]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis System [08/2016 - ]

  1. CHECK DLC3 
    1. Check the DLC3.

      Refer to GENERAL INFORMATION [09/2015 - ]

  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 following conditions.
        INDICATOR OPERATION

        Front Passenger Seat Condition Passenger Airbag ON/OFF Indicator SRS Warning Light
        ON Indicator OFF Indicator
        Vacant OFF ON OFF
        Adult *1 is seated ON OFF OFF
        Child *2 is seated ON or OFF *2 OFF or ON *2 OFF
        Child restraint system is installed OFF ON OFF
        Occupant classification system failure OFF ON ON
        1. *1: The system judges a person of average adult weight or more as an adult. If a smaller adult sits in the front passenger seat, the system may not recognize them as an adult depending on their physique and posture.
        2. *2: The system may not recognize a child or a child in a child restrain system as a child depending on factors such as the positioning of the child restraint system or the child's physique or posture.

        HINT: 

        • The passenger airbag ON/OFF indicator illuminates based on the following timing chart 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 for airbag system DTCs first.
        GTY460751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. PASSENGER AIRBAG ON/OFF INDICATOR CHECK 
    1. Turn the engine switch on (IG).
      GTY655710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Type A
      *B Type B
    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 Function of Passenger Airbag ON/OFF Indicator for the passenger airbag ON/OFF indicator operation when the engine switch is turned on (IG) and approximately 6 seconds elapse.