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

1. Disconnect the E46 multi-media interface ECU connector.
   Fig 1: Checking E46 Multi-Media Interface ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the M3 No. 1 stereo jack adapter assembly connector.
   Fig 2: Inspecting M3 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
   M3-3 (UDO+) - E46-2 (UDI+)	Always	Below 1 Ω
   M3-2 (UDO-) - E46-3 (UDI-)	Always	Below 1 Ω
   M3-5 (UJSS) - E46-5 (UESS)	Always	Below 1 Ω
   M3-3 (UDO+) - Body ground	Always	10 kΩ or higher
   M3-2 (UDO-) - Body ground	Always	10 kΩ or higher
   M3-5 (UJSS) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2