Inspection Procedure

1. Disconnect the G3 ECU connector.
   Fig 1: Identifying G3 ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the R1 receiver connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   G3-6 (GTX+) - R1-3 (TXS+)	Below 1 Ω
   G3-21 (GTX-) - R1-6 (TXS-)	Below 1 Ω
   G3-6 (GTX+) - Body ground	10 kΩ or higher
   G3-21 (GTX-) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OR DIAGNOSTIC TROUBLE CODE CHART