DTC B150A: Lost Communication with HMI-LAN [10/2015 - 12/2017]: Procedure

1. Check if navigation system DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   Navigation system DTCs are not output.	A
   Navigation system DTCs are output.	B

Result: 

B 

GO TO NAVIGATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2019] 

Result: 

A 

See step  2

1. Disconnect the K1 headup display (meter mirror sub-assembly) connector.
2. Disconnect the J50 radio receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K1-8 (TX-) - J50-21 (CNL2)	Always	Below 1 Ω
   K1-7 (TX+) - J50-20 (CNH2)	Always	Below 1 Ω
   K1-8 (TX-) or J50-21 (CNL2) - Body ground	Always	10 kΩ or higher
   K1-7 (TX+) or J50-20 (CNH2) - 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. Check if meter / gauge system DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2015 - ]

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   DTC B150A is not output.	A
   DTC B150A is output.	B

Result: 

A 

REPLACE HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY). Refer to  REMOVAL [10/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019] 

Result: 

B 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 03/2018]