DTC B1321-87: Lost Communication with EMV Missing Message [04/2018 - ]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/o Headup Display System	A
   w/ Headup Display System	B

Result: 

B 

See step  4

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: 

B 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ] 

Result: 

A 

See step  3

1. Replace the combination meter assembly with a new one.

   Refer to REMOVAL [04/2018 - 08/2020] , or refer to REMOVAL [08/2020 - 08/2021] , or refer to REMOVAL [08/2021 - ]

2. Turn the power switch on (IG) and wait 30 seconds.
   NOTE:

   A minimum of 30 seconds is required to send/receive the registration information between the combination meter assembly and radio and display receiver assembly.

3. Operate the steering pad switch assembly and check that the audio tab illuminates.
4. Check if meter / gauge system DTCs are output.

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   The audio tab illuminates and DTC B1321-87 is not output	A
   The audio tab does not illuminate and DTC B1321-87 is output	B

Result: 

A 

END (COMBINATION METER ASSEMBLY WAS DEFECTIVE) 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

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 [04/2018 - 08/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ] 

Result: 

A 

See step  5

1. Check if headup display system DTCs are output.

   Body Electrical > Head Up Display > Trouble Codes 

   Result

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

Result: 

A 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [04/2018 - ]