DTC B1321-87: Lost Communication with EMV Missing Message [06/2018 - 09/2022]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/ Navigation System	A
   w/o Navigation System	B

Result: 

B 

See step  3

Result: 

A 

See step  2

1. Check if navigation system DTCs are output.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

A 

See step  4

Result: 

B 

GO TO NAVIGATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 01/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [01/2019 - 03/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2019 - 09/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2019 - 04/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 09/2022] 

1. Check if audio and visual system DTCs are output.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 01/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [01/2019 - 09/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2019 - 04/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 06/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2021 - 09/2022] 

Result: 

A 

See step  4

1. Check if meter / gauge system DTCs are output.

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   DTC B1321-87 is not output	A
   DTC B1321-87 is output	B

Result: 

A 

REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [06/2018 - 01/2019]  , or refer to  REMOVAL [01/2019 - 03/2019]  , or refer to  REMOVAL [03/2019 - 09/2022] 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2018 - 01/2019]  , or refer to  REMOVAL [01/2019 - 03/2019]  , or refer to  REMOVAL [03/2019 - 09/2022]