Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter: Procedure

1. Disconnect the radio receiver assembly connector.
   Fig 1: Identifying Radio Receiver Assembly Connector End View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the No. 1 stereo jack adapter assembly connector.
   Fig 2: Identifying Z7 Connector End View

   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
   z7-9 (AUXO) - J106-5 (AUXI)	Always	Below 1 Ω
   z7-8 (ASGN) - J106-21 (ASGN)	Always	Below 1 Ω
   z7-6 (ARO) - J106-19 (ARI)	Always	Below 1 Ω
   z7-7 (ALO) - J106-20 (ALI)	Always	Below 1 Ω
   z7-10 (AGND) - J106-6 (AGND)	Always	Below 1 Ω
   z7-9 (AUXO) - Body ground	Always	10 kΩ or higher
   z7-8 (ASGN) - Body ground	Always	10 kΩ or higher
   z7-6 (ARO) - Body ground	Always	10 kΩ or higher
   z7-7 (ALO) - Body ground	Always	10 kΩ or higher
   z7-10 (AGND) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Radio Receiver Assembly)
   *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