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

1. Disconnect the navigation receiver assembly connector.
   Fig 1: Identifying E32 Navigation Receiver Assembly And E38 Stereo Jack Adapter Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the stereo jack adapter connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E38-4 (AUXO) - E32-19 (AUXI)	Always	Below 1 Ω
   E38-3 (ASGN) - E32-16 (ASGN)	Always	Below 1 Ω
   E38-2 (ARO) - E32-15 (ARI)	Always	Below 1 Ω
   E38-1 (ALO) - E32-17 (ALI)	Always	Below 1 Ω
   E38-4 (AUXO) - Body ground	Always	10 kΩ or higher
   E38-3 (ASGN) - Body ground	Always	10 kΩ or higher
   E38-2 (ARO) - Body ground	Always	10 kΩ or higher
   E38-1 (ALO) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2