HEADUP DISPLAY SYSTEM, Diagnostic DTC:B150A

DTC Code DTC Name
B150A Lost Communication with HMI-LAN

DESCRIPTION

The combination meter mirror ECU receives signals from the radio and display receiver assembly*1 or navigation receiver assembly*2 via local bus communication and displays audio and visual system or navigation system information on the headup display.

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

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
B150A Lost Communication with HMI-LAN

Diagnosis Condition:


  • A registration information signal was received from the radio and display receiver assembly*1 or navigation receiver assembly*2 when ACC power source voltage was received by the radio and display receiver assembly*1 or navigation receiver assembly*2

  • The power switch is on (IG)

  • IG power source voltage is 9.5 V or more

Malfunction Status:


  • The registration information signal is not received from the radio and display receiver assembly*1 or navigation receiver assembly*2

Malfunction Time:


  • 30 seconds or more

  • Harness or connector

  • Radio and display receiver assembly*1

  • Navigation receiver assembly*2

  • Combination meter mirror ECU

 DTC stored -

WIRING DIAGRAM


  1. A003M75E01

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/o Navigation System A
      w/ Navigation System B

    B

    CHECK FOR DTC (NAVIGATION SYSTEM) Click here

    A

  2. CHECK FOR DTC (AUDIO AND VISUAL SYSTEM)


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

      Click here


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

    A

    GO TO STEP 4 Click here

    B

    GO TO AUDIO AND VISUAL SYSTEM Click here

  3. CHECK FOR DTC (NAVIGATION SYSTEM)


    1. Check if navigation system DTCs are output.

      for Radio and Display Type: Click here

      for Navigation Receiver Type: Click here


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output (for Radio and Display Type) A
      DTCs are not output (for Navigation Receiver Type) B
      DTCs are output C

    B

    CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - COMBINATION METER MIRROR ECU) Click here

    C

    GO TO NAVIGATION SYSTEM for Radio and Display Type: Click here
    GO TO NAVIGATION SYSTEM for Navigation Receiver Type: Click here

    A

  4. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - COMBINATION METER MIRROR ECU)


    1. Disconnect the I99 radio and display 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
      I99-3 (CNH1) - G8-7 (LCL+) Always Below 1 Ω
      I99-4 (CNL1) - G8-8 (LCL-) Always Below 1 Ω
      I99-3 (CNH1) or G8-7 (LCL+) - Body ground Always 10 kΩ or higher
      I99-4 (CNL1) or G8-8 (LCL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK FOR DTC (METER / GAUGE SYSTEM)


    1. Check if meter / gauge system DTCs are output.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      DTC B150A is not output A
      DTC B150A is output B

    A

    REPLACE COMBINATION METER MIRROR ECU Click here

    B

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - COMBINATION METER MIRROR ECU)


    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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK FOR DTC (METER / GAUGE SYSTEM)


    1. Check if meter / gauge system DTCs are output.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      DTC B150A is not output A
      DTC B150A is output B

    A

    REPLACE COMBINATION METER MIRROR ECU Click here

    B

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here