Inspection Procedure

1. Remove the engine switch (see REMOVAL  ).
   Fig 1: Identifying Engine Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage between the terminals of the engine switch, and check the illumination condition of the engine switch indicator light.
   NOTE:

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

   OK 

   BATTERY VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   Battery terminal (+) → Terminal 11 (SWIL) - Battery terminal (-) → Terminal 5 (GND)	Always	Illuminates
   Battery terminal (+) → Terminal 12 (INDS) - Battery terminal (-) → Terminal 5 (GND)	Always	Illuminates
   Battery terminal (+) → Terminal 13 (INDW) - Battery terminal (-) → Terminal 5 (GND)	Always	Illuminates

NG: REPLACE ENGINE SWITCH  (See REMOVAL  )

OK: Go to Next Step 

Fig 2: Identifying L36 Engine Switch And L13 Main Body ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the L36 engine switch connector.
2. Disconnect the L13 main body ECU connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   L36-11 (SWIL) - L13-2S (SWIL)	Always	Below 1 Ω
   L36-12 (INDS) - L13-15 (INDS)	Always	Below 1 Ω
   L36-13 (INDW) - L13-14 (INDW)	Always	Below 1 Ω
   L36-5 (GND) - Body ground	Always	Below 1 Ω
   L36-11 (SWIL) or L13-25 (SWIL) - Body ground	Always	10 kΩ or higher
   L36-12 (INDS) or L13-15 (INDS) - Body ground	Always	10 kΩ or higher
   L36-13 (INDW) or L13-14 (INDW) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU