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 receiver assembly 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
B150A Lost Communication with HMI-LAN After the combination meter mirror ECU receives a registration information signal, which is sent by the radio receiver assembly when the engine 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 receiver assembly

  • Combination meter mirror ECU

 DTC stored

WIRING DIAGRAM

B002DEGE80

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.

      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

    A

    GO TO STEP 4 Click here

    B

    GO TO NAVIGATION SYSTEM Click here

  3. CHECK FOR DTC


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



      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. (for 12.3 Inch Display) B
      Audio and visual system DTCs are output. (for 8 Inch Display) C

    B

    GO TO AUDIO AND VISUAL SYSTEM Click here

    C

    GO TO AUDIO AND VISUAL SYSTEM Click here

    A

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


    1. w/ Canister Pump Module


      1. Disconnect the M1 combination meter mirror ECU connector.

      2. Disconnect the r1 radio receiver assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        M1-15 (TX-) - r1-4 (CNL1) Always Below 1 Ω
        M1-14 (TX+) - r1-3 (CNH1) Always Below 1 Ω
        M1-15 (TX-) or r1-4 (CNL1) - Body ground Always 10 kΩ or higher
        M1-14 (TX+) or r1-3 (CNH1) - Body ground Always 10 kΩ or higher

    2. w/o Canister Pump Module


      1. Disconnect the M1 combination meter mirror ECU connector.

      2. Disconnect the K57 radio receiver assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        M1-15 (TX-) - K57-4 (CNL1) Always Below 1 Ω
        M1-14 (TX+) - K57-3 (CNH1) Always Below 1 Ω
        M1-15 (TX-) or K57-4 (CNL1) - Body ground Always 10 kΩ or higher
        M1-14 (TX+) or K57-3 (CNH1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. 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 RECEIVER ASSEMBLY Click here