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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) - Service Information (2 Of 2) >> Hazard Warning Switch >> Inspection [10/2017 - ] >> Procedure

Inspection [10/2017 - ]: Procedure

  1. INSPECT HAZARD WARNING SIGNAL SWITCH ASSEMBLY 
    1. Inspect the hazard warning signal switch assembly.
      GTY821217Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Hazard Warning Signal Switch Assembly)
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Switch Condition Specified Condition
        6 - 3 Hazard warning signal switch OFF 10 kΩ or higher
        Hazard warning signal switch ON Below 50 Ω

        If the result is not as specified, replace the hazard warning signal switch assembly.

    2. Check the illumination.
      GTY837393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Hazard Warning Signal Switch Assembly)
      1. Apply battery voltage to the connector and check the illumination conditions.

        OK

        Tester Connection Specified Condition
        7 - Battery positive (+)
        1 - Battery negative (-)
        Illuminates

        If the result is not as specified, replace the hazard warning signal switch assembly.