DTC B150A: Lost Communication with HMI-LAN [08/2019 - ]: Description

The combination meter mirror ECU receives signals from the navigation receiver assembly*1 or radio and display receiver assembly*2 via local bus communication and displays navigation system*1 and audio and visual system*2 information on the headup display.

This DTC is stored when the combination meter mirror ECU cannot receive the signal.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory
B150A	Lost Communication with HMI-LAN	Diagnosis Condition: A registration information signal was received from the navigation receiver assembly1 or radio and display receiver assembly2 when ACC power source voltage was received by the navigation receiver assembly1 or radio and display receiver assembly2. The power switch is on (IG). IG power source voltage is 9.5 V or more. Malfunction Status: The registration information signal is not received from the navigation receiver assembly1 or radio and display receiver assembly2. Malfunction Time: 30 seconds or more	Harness or connector Navigation receiver assembly1 Radio and display receiver assembly2 Combination meter mirror ECU	DTC stored

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

B150A

Lost Communication with HMI-LAN

Diagnosis Condition:

A registration information signal was received from the navigation receiver assembly*1 or radio and display receiver assembly*2 when ACC power source voltage was received by the navigation receiver assembly*1 or radio and display receiver assembly*2.
The power switch is on (IG).
IG power source voltage is 9.5 V or more.

Malfunction Status:

The registration information signal is not received from the navigation receiver assembly*1 or radio and display receiver assembly*2.

Malfunction Time:

30 seconds or more

Harness or connector
Navigation receiver assembly*1
Radio and display receiver assembly*2
Combination meter mirror ECU

DTC stored

*1: w/ Navigation System
*2: w/o Navigation System