Cellular Phone Voice Circuit between Radio Receiver and Stereo Component Amplifier: Procedure

1. Disconnect the radio receiver assembly and stereo component amplifier assembly connectors.
   Fig 1: Radio Receiver Assembly And Stereo Component Amplifier Assembly Connectors

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G9-11 (IVO+) - O33-15 (II1+)	Always	Below 1 Ω
   G9-12 (IVO-) - O33-14 (II1-)	Always	Below 1 Ω
   G9-11 (IVO+) - Body ground	Always	10 kΩ or higher
   G9-12 (IVO-) - Body ground	Always	10 kΩ or higher
   G9-13 (SLD1) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio Receiver Assembly)
   *2	Front view of wire harness connector (to Stereo Component Amplifier Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2