Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter: Procedure

1. Disconnect the multi-media interface ECU connector.
   Fig 1: Identifying U12 Multi-Media Interface ECU Connector Terminals

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2. Disconnect the No. 1 stereo jack adapter assembly connector.
   Fig 2: Identifying U11 No. 1 Stereo Jack Adapter Assembly Connector Terminals

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   U11-3 (UDO+) - U12-2 (UDI+)	Always	Below 1 Ω
   U11-2 (UDO-) - U12-3 (UDI-)	Always	Below 1 Ω
   U11-3 (UDO+) - Body ground	Always	10 kΩ or higher
   U11-2 (UDO-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Multi-media Interface ECU)
   *2	Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2