Power Switch Indicator Circuit: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the L36 power switch connector.
2. Apply battery voltage between the terminals of the power switch, and check the illumination condition of the power switch indicator light.
   NOTE:

   • If the positive (+) lead and the negative (-) lead are incorrectly connected, the power 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

NG → See step   3 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard resistance

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE MAIN BODY ECU