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

1. w/ Navigation System:
   1. Check if navigation system DTCs are output.

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

      OK

      Navigation system DTCs are not output.

2. w/o Navigation System:
   1. Check if audio and visual system DTCs are output.

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

      OK

      Audio and visual system DTCs are not output.

   Result

   Result	Proceed to
   OK	A
   NG (w/ Navigation System)	B
   NG (w/o Navigation System)	C

Result: 

B 

GO TO NAVIGATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] 

Result: 

C 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] 

Result: 

A 

See step  2

1. Disconnect the H203 radio and display receiver assembly connector.
2. Disconnect the H139 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H203-5 (CNH1) - H139-18 (MSCH)	Always	Below 1 Ω
   H203-6 (CNL1) - H139-19 (MSCL)	Always	Below 1 Ω
   H203-5 (CNH1) - Body ground	Always	10 kΩ or higher
   H203-6 (CNL1) - Body ground	Always	10 kΩ or higher
   H203-5 (CNH1) - H203-6 (CNL1)	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 [08/2017 - ]

2. Turn the engine switch on (IG) 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 [08/2019 - ]

   OK

   The audio tab illuminates and DTC B150A is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (COMBINATION METER ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [08/2019 - ]