Navigation Receiver Assembly Power Source Circuit: Procedure

1. Disconnect the navigation receiver assembly connector (for 8 Speakers).
   Fig 1: View Of Wire Harness Connector To Navigation Receiver Assembly For 8 Speakers

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the navigation receiver assembly connector (for 6 Speakers).
   Fig 2: View Of Wire Harness Connector To Navigation Receiver Assembly For 6 Speakers

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the navigation receiver assembly connector.
   Fig 3: View Of Wire Harness Connector To Navigation Receiver Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F9-20 (GND) - Body ground*4	Always	Below 1 Ω
   F40-7 (GND) - Body ground*5	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   F9-1 (B) - F9-20 (GND)*4	Always	11 to 14 V
   F9-11 (ACC) - F9-20 (GND)*4	Ignition switch ACC	11 to 14 V
   F40-4 (B) - F40-7 (GND)*5	Always	11 to 14 V
   F40-3 (ACC) - F40-7 (GND)*5	Ignition switch ACC	11 to 14 V
   F13-2 (IG) - F9-20 (GND)*4	Ignition switch ON	11 to 14 V
   F13-2 (IG) - F40-7 (GND)*5	Ignition switch ON	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Navigation Receiver Assembly*4)
   *2	Front view of wire harness connector (to Navigation Receiver Assembly*5)
   *3	Front view of wire harness connector (to Navigation Receiver Assembly)

   • *4: for 8 Speakers
   • *5: for 6 Speakers

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2