Reverse Signal Circuit [03/2019 - 11/2022]: Procedure

1. Move the shift lever to R and check if the back-up lights come on.

   OK

   The back-up lights come on.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO LIGHTING SYSTEM 

w/ AFS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - 09/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - 11/2022]

w/o AFS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - 11/2022]

Result: 

OK 

See step  2

1. Disconnect the I55 radio and display receiver assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   I55-28 (REV) - Body ground	Ignition switch to ON Shift lever in R	11 to 14 V
   I55-28 (REV) - Body ground	Ignition switch to ON Shift lever not in R	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [03/2019 - 09/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2019 - 04/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [04/2020 - 09/2022]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR