Navigation Receiver Assembly Power Source Circuit [10/2014 - ]: Procedure

1. Disconnect the E17 and E20 navigation ECU sub-assembly connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E17-7 (GND1) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E17-4 (+B1) - E17-7 (GND1)	Always	11 to 14 V
   E17-3 (ACC1) - E17-7 (GND1)	Engine switch on (ACC)	11 to 14 V
   E20-1 (IG) - E17-7 (GND1)	Engine switch on (IG)	11 to 14 V

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [10/2014 - 10/2015] or PROBLEM SYMPTOMS TABLE [10/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR