Inspection Procedure

1. Remove the power switch.
2. Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch.
   NOTE:

   • 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.
     Fig 1: Identifying Power Switch Connector Terminal

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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)

NG: REPLACE POWER SWITCH 

OK: GO TO Next Step 

1. Disconnect the K29 switch connector.
2. Disconnect the K73 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   K29-11 (SWIL) - K73-36 (SWIL)	Below 1 Ω
   K29-12 (INDS) - K73-4 (INDS)	Below 1 Ω
   K29-13 (INDW) - K73-13 (INDW)	Below 1 Ω
   K29-5 (GND) - Body ground	Below 1 Ω
   K29-4 (COM) - Body ground	Below 1 Ω
   K29-11 (SWIL) or K73-36 (SWIL) -Body ground	10 kΩ or higher
   K29-12 (INDS) or K73-4 (INDS) - Body ground	10 kΩ or higher
   K29-13 (INDW) or K73-13 (INDW) -Body ground	10 kΩ or higher

Fig 2: Identifying Power Switch And Power Source Control ECU And Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE POWER SOURCE CONTROL ECU