Sound Signal Circuit between Navigation Receiver Assembly and Stereo Jack Adapter [08/2015 - 08/2019]: Procedure

1. Disconnect the G37 navigation receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the G53 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
   G37-25 (ADPG) - G53-9 (AUXO)	Always	Below 1 Ω
   G37-26 (VAR+) - G53-6 (ARO)	Always	Below 1 Ω
   G37-28 (VAL+) - G53-7 (ALO)	Always	Below 1 Ω
   G37-27 (VA-) - G53-8 (ASGN)	Always	Below 1 Ω
   G37-11 (AGND) - G53-10 (AGND)	Always	Below 1 Ω
   G37-25 (ADPG) - Body ground	Always	10 kΩ or higher
   G37-26 (VAR+) - Body ground	Always	10 kΩ or higher
   G37-28 (VAL+) - Body ground	Always	10 kΩ or higher
   G37-27 (VA-) - Body ground	Always	10 kΩ or higher
   G37-11 (AGND) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Navigation Receiver Assembly)
   *b	Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly)

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR