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Engine Switch: Inspection

  1. INSPECT ENGINE SWITCH 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      7 (SS1) - 5 (GND) Not pushed 10 kΩ or higher
      2 (SS2) - 5 (GND) Not pushed 10 kΩ or higher
      7 (SS1) - 5 (GND) Pushed Below 1 Ω
      2 (SS2) - 5 (GND) Pushed Below 1 Ω
      Fig 1: Identifying Engine Switch Connector Terminals
      G05750552Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the resistance is not as specified, replace the engine switch.

    2. Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch

      HINT:

      • If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator will not illuminate.
      • If the voltage is too low, the indicator will not illuminate.

      OK 

      MEASUREMENT CONDITION AND SPECIFIED CONDITION

      Measurement Condition Specified Condition
      Battery positive (+) → Terminal 11 (SWIL)
      Battery negative (-) → Terminal 4 (COM) or 5 (GND)
      Illuminates
      Battery positive (+) → Terminal 12 (INDS)
      Battery negative (-) → Terminal 4 (COM) or 5 (GND)
      Illuminates
      Battery positive (+) → Terminal 13 (INDW)
      Battery negative (-) → Terminal 4 (COM) or 5 (GND)
      Illuminates
      Fig 2: Identifying Engine Switch Connector Terminals
      G04943940Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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