Sound Signal Circuit between Navigation Receiver Assembly and Stereo Jack Adapter: Procedure

1. Disconnect the navigation receiver assembly connector.
   Fig 1: View Of Wire Harness Connector To Navigation Receiver Assembly

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2. Disconnect the stereo jack adapter connector (for 6 Speakers).
   Fig 2: View Of Wire Harness Connector To Stereo Jack Adapter (For 6 Speakers)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the stereo jack adapter connector (for 8 Speakers).
   Fig 3: View Of Wire Harness Connector To Stereo Jack Adapter (For 8 Speakers)

   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
   F10-19 (AUXI) - F17-4 (AUXO)*4	Always	Below 1 Ω
   F10-15 (ARI) - F17-2 (ARO)*4	Always	Below 1 Ω
   F10-17 (ALI) - F17-1 (ALO)*4	Always	Below 1 Ω
   F10-16 (ASGN) - F17-3 (ASGN)*4	Always	Below 1 Ω
   F10-19 (AUXI) - F31-9 (AUXO)*5	Always	Below 1 Ω
   F10-18 (AGND) - F31-10 (AGND)*5	Always	Below 1 Ω
   F10-15 (ARI) - F31-6 (ARO)*5	Always	Below 1 Ω
   F10-17 (ALI) - F31-7 (ALO)*5	Always	Below 1 Ω
   F10-16 (ASGN) - F31-8 (ASGN)*5	Always	Below 1 Ω
   F10-19 (AUXI) - Body ground	Always	10 kΩ or higher
   F10-18 (AGND) - Body ground	Always	10 kΩ or higher
   F10-15 (ARI) - Body ground	Always	10 kΩ or higher
   F10-17 (ALI) - Body ground	Always	10 kΩ or higher
   F10-16 (ASGN) - Body ground	Always	10 kΩ or higher
   F17-5 (AGND) - Body ground*4	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

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

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2