Inspection Procedure

1. Disconnect the navigation ECU connector N3.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester connection	Condition	Specified condition
   GND1 - Body ground	Always	Below 1 Ω

   Fig 1: Disconnecting Navigation ECU Connector N3

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. Measure the voltage according to the value(s) in the table below.

Standard voltage 

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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