Data Signal Circuit between Radio Receiver and Stereo Jack Adapter [11/2017 - ]: Procedure

1. Disconnect the O165 radio receiver assembly connector.
2. Disconnect the O166 No. 1 stereo jack adapter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *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)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O165-2 (US1-) - O166-2 (UDO-)	Always	Below 1 Ω
   O165-3 (US1+) - O166-3 (UDO+)	Always	Below 1 Ω
   O165-5 (USG1) - O166-5 (UJSS)	Always	Below 1 Ω
   O165-2 (US1-) or O166-2 (UDO-) - Body ground	Always	10 kΩ or higher
   O165-3 (US1+) or O166-3 (UDO+) - Body ground	Always	10 kΩ or higher
   O165-5 (USG1) or O166-5 (UJSS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2017 - 03/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [03/2019 - 09/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2020 - 01/2023]  , or refer to  PROBLEM SYMPTOMS TABLE [01/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR