Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter [10/2014 - 09/2017]: Procedure

1. Disconnect the I121 radio receiver assembly connector.
2. Disconnect the I143 No. 1 stereo jack adapter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I121-25 (ADPG) - I143-10 (ADPG)	Always	Below 1 Ω
   I121-11 (AGND) - I143-12 (AGND)	Always	Below 1 Ω
   I121-26 (VAR+) - I143-7 (VAR+)	Always	Below 1 Ω
   I121-28 (VAL+) - I143-8 (VAL+)	Always	Below 1 Ω
   I121-27 (VA-) - I143-9 (VA-)	Always	Below 1 Ω
   I121-25 (ADPG) or I143-10 (ADPG) - Body ground	Always	10 kΩ or higher
   I121-11 (AGND) or I143-12 (AGND) - Body ground	Always	10 kΩ or higher
   I121-26 (VAR+) or I143-7 (VAR+) - Body ground	Always	10 kΩ or higher
   I121-28 (VAL+) or I143-8 (VAL+) - Body ground	Always	10 kΩ or higher
   I121-27 (VA-) or I143-9 (VA-) - 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 [10/2014 - 09/2016]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2016 - 09/2017] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR