DTC B1321-87: Lost Communication with EMV Missing Message [06/2017 - 10/2020]: Procedure

1. Choose the model to be inspected.

   Result

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

Result: 

B 

See step  3

Result: 

A 

See step  2

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: 

A 

See step  4

Result: 

B 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2017 - 08/2018]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 09/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2019 - 10/2020] 

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: 

B 

GO TO NAVIGATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2017 - 08/2018]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 09/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2019 - 10/2020] 

Result: 

A 

See step  4

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

   Refer to DTC CHECK / CLEAR [03/2017 - ]

   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 [06/2017 - 10/2020] 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2017 - 10/2020]