DTC B150A: Lost Communication with HMI-LAN [09/2019 - ]: Procedure

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

   Refer to DTC CHECK / CLEAR [09/2019 - ]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   Audio and visual system DTCs are not output.

   Result

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

Result: 

B 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2018 - ] 

Result: 

A 

See step  2

1. Disconnect the F4 combination meter assembly connector.
2. Disconnect the F131 radio and display receiver assembly connector.
3. Measure the resistance according to the value(s) in the chart below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F4-37 (MSCL) - F131-6 (CNL1)	Always	Below 1 Ω
   F4-36 (MSCH) - F131-5 (CNH1)	Always	Below 1 Ω
   F4-37 (MSCL) - Body ground	Always	10 kΩ or higher
   F4-36 (MSCH) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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

   Refer to REMOVAL [02/2017 - 08/2020] , or refer to REMOVAL [08/2020 - ]

2. Turn the ignition switch to ON and wait 30 seconds.
   NOTE:

   A maximum 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 for DTCs.

   Refer to DTC CHECK / CLEAR [02/2017 - ]

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   The audio tab illuminates and DTC B150A is not output.	A
   The audio tab does not illuminate and DTC B150A is output.	B

Result: 

A 

END 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2019 - ]