DTC B150A: Lost Communication with HMI-LAN [08/2017 - 08/2019]: Procedure

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

      Refer to DTC CHECK / CLEAR [08/2017 - 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 [08/2017 - 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  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2019] 

Result: 

C 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2019] 

Result: 

A 

See step  2

1. w/ Navigation System:
   1. Disconnect the H160 receiver assembly connector.
   2. Disconnect the H139 meter assembly connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      H160-3 (CNH1) - H139-18 (MSCH)	Always	Below 1 Ω
      H160-4 (CNL1) - H139-19 (MSCL)	Always	Below 1 Ω
      H160-3 (CNH1) - Body ground	Always	10 kΩ or higher
      H160-4 (CNL1) - Body ground	Always	10 kΩ or higher
      H160-3 (CNH1) - H160-4 (CNL1)	Always	10 kΩ or higher

2. w/o Navigation System:
   1. Disconnect the H161 receiver assembly connector.
   2. Disconnect the H139 meter assembly connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      H161-3 (CNH1) - H139-18 (MSCH)	Always	Below 1 Ω
      H161-4 (CNL1) - H139-19 (MSCL)	Always	Below 1 Ω
      H161-3 (CNH1) - Body ground	Always	10 kΩ or higher
      H161-4 (CNL1) - Body ground	Always	10 kΩ or higher
      H161-3 (CNH1) - H160-4 (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 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*1 or radio and display receiver assembly*2.

   1. *1: w/ Navigation System
   2. *2: w/o Navigation System
3. Operate the steering pad switch assembly and check that the audio tab illuminates.
4. Check for DTCs.

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

   OK

   The audio tab illuminates and DTC B150A is not output.

   Result

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

Result: 

A 

END 

Result: 

B 

REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to  REMOVAL [08/2015 - 08/2019] 

Result: 

C 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [08/2015 - 08/2019]