DTC B150A: Lost Communication with HMI-LAN [09/2016 - ]: Procedure

1. Check if navigation system DTCs are output.

   Refer to DTC CHECK / CLEAR [09/2016 - 05/2019] , or refer to DTC CHECK / CLEAR [05/2019 - ]

   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  HOW TO PROCEED WITH TROUBLESHOOTING [09/2016 - ] 

Result: 

A 

See step  2

1. Disconnect the I36 navigation receiver assembly connector.
2. Disconnect the G8 combination meter mirror ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I36-3 (CNH1) - G8-7 (LCL+)	Always	Below 1 Ω
   I36-4 (CNL1) - G8-8 (LCL-)	Always	Below 1 Ω
   I36-3 (CNH1) or G8-7 (LCL+) - Body ground	Always	10 kΩ or higher
   I36-4 (CNL1) or G8-8 (LCL-) - 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 [09/2016 - ]

   Body Electrical > Combination Meter > Trouble Codes 

   Result

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

Result: 

A 

REPLACE COMBINATION METER MIRROR ECU. Refer to  DISASSEMBLY [09/2016 - ] 

Result: 

B 

REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2016 - 05/2019]  , or refer to  REMOVAL [05/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 - ]