Gateway ECU Power Source Circuit: Wiring Diagram

1. Disconnect the network gateway ECU connector G3.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   GND - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   BATT - GND	Always	10 to 14 V
   ACC - GND	Ignition SW ACC	10 to 14 V
   IG - GND	Ignition SW ON	10 to 14 V

   Fig 2: Identifying Network Gateway ECU Connector G3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL