METER / GAUGE SYSTEM, Diagnostic DTC:B150A

DTC Code DTC Name
B150A Lost Communication with HMI-LAN

DESCRIPTION

The combination meter assembly receives a text data signal from the radio receiver assembly via local bus communication.

Based on this signal, audio and visual system or navigation system information is displayed on the multi-information display.

This DTC is stored when the combination meter assembly cannot receive the signal.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
B150A Lost Communication with HMI-LAN After the combination meter assembly receives a registration information signal, which is sent by the radio receiver assembly when the power switch is on (ACC), 1 or more times, the combination meter assembly cannot receive the signal for 30 seconds or more.

  • Harness or connector

  • Radio receiver assembly

  • Combination meter assembly

 DTC stored -

WIRING DIAGRAM


  1. w/ Navigation System

    A01WXTOE64
    *a Radio Receiver Assembly
    *b Combination Meter Assembly
    *c Local Bus Communication Line

  2. w/ Audio and Visual System

    A01WYESE02

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/ Navigation System A
      w/ Audio and Visual System B

    B

    CHECK FOR DTC Click here

    A

  2. CHECK FOR DTC


    1. Check if navigation system DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      Navigation system DTCs are not output.
      Result
      Result Proceed to
      Navigation system DTCs are not output. A
      Navigation system DTCs are output. B

    B

    GO TO NAVIGATION SYSTEM Click here

    A

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO RECEIVER ASSEMBLY)


    1. Disconnect the O4 combination meter assembly connector.

    2. Disconnect the O57 radio receiver assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O4-2 (MSCL) - O57-21 (CNL2) Always Below 1 Ω
      O4-3 (MSCH) - O57-20 (CNH2) Always Below 1 Ω
      O4-2 (MSCL) or O57-21 (CNL2) - Body ground Always 10 kΩ or higher
      O4-3 (MSCH) or O57-20 (CNH2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new or known good one.

      Click here

    2. Turn the power 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 receiver assembly.

    3. Operate the steering pad switch assembly and check that the audio tab illuminates.

    4. Check for DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      Audio tab illuminates and DTC B150A is not output. A
      Audio tab does not illuminate and DTC B150A is output. B

    A

    END

    B

    REPLACE RADIO RECEIVER ASSEMBLY Click here

  5. CHECK FOR DTC


    1. Check if audio and visual system DTCs are output.

      w/o Parking Assist Monitor System: Click here

      w/ Parking Assist Monitor System: Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      Audio and visual system DTCs are not output.
      Result
      Result Proceed to
      Audio and visual system DTCs are not output. A
      Audio and visual system DTCs are output. B

    B

    GO TO AUDIO AND VISUAL SYSTEM w/o Parking Assist Monitor System: Click here
    GO TO AUDIO AND VISUAL SYSTEM w/ Parking Assist Monitor System: Click here

    A

  6. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO RECEIVER ASSEMBLY)


    1. Disconnect the O4 combination meter assembly connector.

    2. Disconnect the O71*1 or O57*2 radio receiver assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O4-2 (MSCL) - O71-4 (CNL1)*1 Always Below 1 Ω
      O4-3 (MSCH) - O71-3 (CNH1)*1 Always Below 1 Ω
      O4-2 (MSCL) or O71-4 (CNL1) - Body ground*1 Always 10 kΩ or higher
      O4-3 (MSCH) or O71-3 (CNH1) - Body ground*1 Always 10 kΩ or higher
      O4-2 (MSCL) - O57-21 (CNL2)*2 Always Below 1 Ω
      O4-3 (MSCH) - O57-20 (CNH2)*2 Always Below 1 Ω
      O4-2 (MSCL) or O57-21 (CNL2) - Body ground*2 Always 10 kΩ or higher
      O4-3 (MSCH) or O57-20 (CNH2) - Body ground*2 Always 10 kΩ or higher

      • *1: w/o Parking Assist Monitor System

      • *2: w/ Parking Assist Monitor System

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new or known good one.

      Click here

    2. Turn the power 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 receiver assembly.

    3. Operate the steering pad switch assembly and check that the audio tab illuminates.

    4. Check for DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      Audio tab illuminates and DTC B150A is not output. A
      Audio tab does not illuminate and DTC B150A is output. (w/o Parking Assist Monitor System) B
      Audio tab does not illuminate and DTC B150A is output. (w/ Parking Assist Monitor System) C

    A

    END

    B

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    C

    REPLACE RADIO RECEIVER ASSEMBLY Click here