Navigation Receiver Assembly Power Source Circuit [06/2015 - 01/2018]: Procedure

1. Disconnect the navigation receiver assembly connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G59-7 (GND1) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   G59-4 (+B1) - G59-7 (GND1)	Power switch off	11 to 14 V
   G59-3 (ACC1) - G59-7 (GND1)	Power switch on (ACC)	11 to 14 V
   G105-1 (IG) - G59-7 (GND1)	Power switch on (IG)	11 to 14 V

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Navigation Receiver Assembly)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2015 - 01/2018] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR