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

1. Disconnect the E44 stereo jack adapter connector.
   Fig 1: Identifying Stereo Jack Adapter & Navigation Receiver Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E89 navigation receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E44-1 (ALO) - E89-17 (ALI)	Always	Below 1 Ω
   E44-2 (ARO) - E89-15 (ARI)	Always	Below 1 Ω
   E44-3 (ASGN) - E89-16 (ASGN)	Always	Below 1 Ω
   E44-4 (AUXO) - E89-19 (AUXI)	Always	Below 1 Ω
   E44-5 (AGND) - E89-18 (AGND)	Always	Below 1 Ω
   E44-1 (ALO) - Body ground	Always	10 kΩ or higher
   E44-2 (ARO) - Body ground	Always	10 kΩ or higher
   E44-3 (ASGN) - Body ground	Always	10 kΩ or higher
   E44-4 (AUXO) - Body ground	Always	10 kΩ or higher
   E44-5 (AGND) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2