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 system and 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 After the combination meter mirror ECU receives a registration information signal, which is sent by the radio and display receiver assembly*1 or navigation receiver assembly*2 when the power switch is on (ACC), 1 or more times, the combination meter mirror ECU cannot receive the signal for 30 seconds or more.

  • Harness or connector

  • Radio and display receiver assembly*1

  • Navigation receiver assembly*2

  • Combination meter mirror ECU

 DTC stored for Radio and Display Type or Navigation Receiver Type

WIRING DIAGRAM


  1. w/ Navigation System

    B004QGTE04

  2. w/o Navigation System

    B004OXOE85

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

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

    B

    CHECK FOR DTC Click here

    A

  2. CHECK FOR DTC


    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
      Navigation system DTCs are not output. A
      Navigation system DTCs are output. B

    B

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

    A

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


    1. Disconnect the G7 combination meter mirror ECU connector.

    2. Disconnect the F34 radio and display receiver assembly*1 or F95 navigation receiver assembly*2 connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G7-7 (LCL+) - F34-3 (CNH1)*1 Always Below 1 Ω
      G7-8 (LCL-) - F34-4 (CNL1)*1 Always Below 1 Ω
      G7-7 (LCL+) or F34-3 (CNH1) - Body ground*1 Always 10 kΩ or higher
      G7-8 (LCL-) or F34-4 (CNL1) - Body ground*1 Always 10 kΩ or higher
      G7-7 (LCL+) - F95-3 (CNH1)*2 Always Below 1 Ω
      G7-8 (LCL-) - F95-4 (CNL1)*2 Always Below 1 Ω
      G7-7 (LCL+) or F95-3 (CNH1) - Body ground*2 Always 10 kΩ or higher
      G7-8 (LCL-) or F95-4 (CNL1) - Body ground*2 Always 10 kΩ or higher

      • *1: for Radio and Display Type

      • *2: for Navigation Receiver Type

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK FOR DTC


    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 (for Radio and Display Type). B
      DTC B150A is output (for Navigation Receiver Type). C

    A

    REPLACE COMBINATION METER MIRROR ECU Click here

    B

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    C

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

  5. CHECK FOR DTC


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

      Click here


      Body Electrical > Navigation System > Trouble Codes
      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 Click here

    A

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


    1. Disconnect the G7 combination meter mirror ECU connector.

    2. Disconnect the F34 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G7-7 (LCL+) - F34-3 (CNH1) Always Below 1 Ω
      G7-8 (LCL-) - F34-4 (CNL1) Always Below 1 Ω
      G7-7 (LCL+) or F34-3 (CNH1) - Body ground Always 10 kΩ or higher
      G7-8 (LCL-) or F34-4 (CNL1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK FOR DTC


    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