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Home >> Lexus >> 2017 >> ES 350 >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Starting System (Service Information) >> Engine Switch >> Inspection [07/2015 - ] >> Procedure

Inspection [07/2015 - ]: Procedure

  1. INSPECT ENGINE SWITCH 
    1. Measure the resistance according to the value(s) in the table below.
      GTY667070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Engine Switch)
      - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      H44-5 (SS1) - H44-6 (AGND) Not pushed 10 kΩ or higher
      H44-1 (SS2) - H44-6 (AGND)
      H44-5 (SS1) - H44-6 (AGND) Pushed Below 1 Ω
      H44-1 (SS2) - H44-6 (AGND)

      If the result 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 engine switch.
      GTY612647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Indicator Light *b Component without harness connected
      (Engine Switch)

      OK

      Measurement Condition Specified Condition
      Battery positive (+) → Terminal H44-9 (SWIL)
      Battery negative (-) → Terminal H44-6 (AGND)
      Illuminates

      HINT: 

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

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