Engine Switch Inspection

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Uz-Fe Starting. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSPECT ENGINE SWITCH

Engine Switch -- Inspection



1. INSPECT ENGINE SWITCH



  1. Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Starting.Starting System.Engine Switch Inspection

    Measure the resistance of the switch.
    Standard resistance:
    Tester Connection
    		Switch Position
    		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
    If the result is not as specified, replace the engine switch.



  1. Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Starting.Starting System.Engine Switch Inspection

    Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch.
    HINT:
    1. If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator light will not illuminate.
    2. If the voltage is too low, the engine switch indicator light will not illuminate.
    OK:
    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
    If the result is not as specified, replace the engine switch.