Inspection Procedure

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

   Standard resistance 

   STANDARD RESISTANCE
   
   

   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.
   Fig 1: Identifying Gateway ECU Connector G3 Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   STANDARD VOLTAGE
   
   

   Tester connection	Condition	Specified condition
   BATT - GND	Always	10 to 14 V
   ACC - GND	Ignition switch in the ACC position	10 to 14 V
   IG - GND	Ignition switch in the ON position	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE