Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU [11/2018 - 08/2020]: Procedure

1. *1: Only for models with the vehicle identification number on the certification label ending with the character A.

   *2: Except models with the vehicle identification number on the certification label ending with the character A.

1. Disconnect the G1 radio and display receiver assembly connector.
2. Disconnect the G15*1 or H7*2 navigation ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G1-28 (REV2) - G15-19 (REV2)*1	Always	Below 1 Ω
   G1-28 (REV2) - H7-19 (REV2)*2	Always	Below 1 Ω
   G1-28 (REV2) - 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 [11/2018 - 02/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [02/2019 - 10/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [10/2019 - 10/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR