Engine Switch: Inspection

1. Measure the resistance of the switch.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   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 Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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 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 SPECIFIED CONDITION CHART
   
   

   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 Start Switch With Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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