Engine Switch Indicator Circuit [09/2015 - ]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the engine switch (Refer to REMOVAL [09/2015 - ] ).
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

   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

Result:  NG

NG 

REPLACE ENGINE SWITCH 

(Refer to REMOVAL [09/2015 - ] )

Result:  OK

OK 

See step  2

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

   Tester Connection	Condition	Specified Condition
   L36-11 (SWIL) - L13-25 (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

Result:  OK

OK 

REPLACE MAIN BODY ECU 

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR