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Downhill Assist Control Switch: Inspection

  1. CHECK DOWNHILL ASSIST CONTROL SWITCH 
    Fig 1: Identifying Downhill Assist Control Switch
    G05585130Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance of the switch.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      1 - 4 Released 10 kΩ or higher
      1 - 4 Pushed in Below 25 Ω

      If the result is not as specified, replace the switch.

    2. Check illumination operation.
      1. Connect the battery's positive (+) lead to terminal 3 and negative (-) lead to terminal 2.

        Then check that the bulb illuminates.

        OK: Bulb illuminates. 

        If the result is not as specified, replace the switch.