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

1. Disconnect the H142 multi-media module receiver assembly connector.
2. Disconnect the H120 No. 1 stereo jack adapter assembly connector.
3. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying H142 And H120 Harness Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H142-16 (ADPG) - H120-9 (AUXO)	Always	Below 1 Ω
   H142-7 (VAR+) - H120-6 (ARO)	Always	Below 1 Ω
   H142-8 (VAL-) - H120-7 (ALO)	Always	Below 1 Ω
   H142-15 (VA-) - H120-8 (ASGN)	Always	Below 1 Ω
   H142-5 (AGND) - H120-10 (SGND)	Always	Below 1 Ω
   H142-16 (ADPG) - Body ground	Always	10 kΩ or higher
   H142-7 (VAR+) - Body ground	Always	10 kΩ or higher
   H142-8 (VAL-) - Body ground	Always	10 kΩ or higher
   H142-15 (VA-) - Body ground	Always	10 kΩ or higher
   H142-5 (AGND) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Multi-media Module 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