DTC B150A: Lost Communication with HMI-LAN [12/2015 - 11/2017]: Procedure

1. Check if Navigation System DTCs are output (Refer to DTC CHECK / CLEAR [12/2015 - 11/2017] ).

   OK

   Navigation system DTCs are not output.

   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 [12/2015 - 11/2017] 

Result: 

A 

See step  2

1. Disconnect the D145 combination meter assembly connector.
2. Disconnect the D159 navigation receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D145-18 (MSCH) - D159-3 (CNH1)	Always	Below 1 Ω
   D145-19 (MSCL) - D159-4 (CNL1)	Always	Below 1 Ω
   D145-18 (MSCH) or D159-3 (CNH1) - Body ground	Always	10 kΩ or higher
   D145-19 (MSCL) or D159-4 (CNL1) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Replace the combination meter assembly with a new or known good one (Refer to REMOVAL [12/2015 - ] ).
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 navigation 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 [12/2015 - ] ).
   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 (COMBINATION METER ASSEMBLY WAS DEFECTIVE) 

Result: 

B 

REPLACE NAVIGATION RECEIVER ASSEMBLY 

(Refer to REMOVAL [12/2015 - 11/2017] )