LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> GS 450h >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Starting >> Power Switch >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Power Switch: Inspection

  1. INSPECT POWER SWITCH 
    1. Measure the resistance of the switch.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      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 power switch.

      Fig 1: Identifying Power Switch Connector Terminal
      G05303660Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 power switch indicator does not illuminate.
      • If the voltage is too low, the indicator will not illuminate.

      OK 

      MEASUREMENT CONDITION

      Measurement Condition Specified Condition (Color)
      Battery positive (+) → Terminal 11 (SWIL)
      Battery negative (-) → Terminal 4 (COM) or 5 (GND)      		 Illuminates (greenish white)
      Battery positive (+) → Terminal 12 (INDS)
      Battery negative (-) → Terminal 4 (COM) or 5 (GND)      		 Illuminates (green)
      Battery positive (+) → Terminal 13 (INDW)
      Battery negative (-) → Terminal 4 (COM) or 5 (GND)      		 Illuminates (amber)
      Fig 2: Identifying Power Switch Connector Terminal
      G05303661Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

scientia non olet · About LEMON Manuals