DTC B1321-87: Lost Communication with EMV Missing Message [02/2024 - ]: Description

The combination meter assembly and radio and display receiver assembly communicate via local bus communication. This allows navigation system information to be displayed on the multi-information display. This DTC is stored when a communication error occurs between the radio and display receiver assembly combination meter assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B1321-87	Lost Communication with EMV Missing Message	Diagnosis Condition: Ignition switch ON IG power source voltage is 9.5 V or more Malfunction Status: No communication with radio and display receiver assembly	Harness or connector Radio and display receiver assembly Combination meter assembly	Combination Meter	A

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

B1321-87

Lost Communication with EMV Missing Message

Diagnosis Condition:

Ignition switch ON
IG power source voltage is 9.5 V or more

Malfunction Status:

No communication with radio and display receiver assembly

Harness or connector
Radio and display receiver assembly
Combination meter assembly

Combination Meter

Pattern	DTC Output Part Name (Display on GTS)		Suspected Area (Malfunction Status)
Pattern	Combination Meter Assembly (Combination Meter)	Radio and Display Receiver Assembly (Navigation System)	Suspected Area (Malfunction Status)
Pattern 1	B1321-87	U11D0-87	Local Bus (Open or short)
			Radio and Display Receiver Assembly (Internal malfunction)
			Combination Meter Assembly (Internal malfunction)
Pattern 2	B1321-87	-	Combination Meter Assembly (Internal malfunction)