HEADUP DISPLAY SYSTEM, Diagnostic DTC:B150A

DTC Code DTC Name
B150A Lost Communication with HMI-LAN

DESCRIPTION

The meter mirror sub-assembly receives signals from the multi-media module receiver assembly via the local bus communication line and displays audio and navigation system information on the headup display.

This DTC is output by the meter mirror sub-assembly if the signals stop.

DTC Code DTC Detection Condition Trouble Area
B150A After the combination meter mirror ECU receives a registration information signal, which is sent by the multi-media module 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.

  • Wire harness or connector

  • Meter mirror sub-assembly

  • Navigation System

WIRING DIAGRAM

A000QC4E06
*a Multi-media Module Receiver ssembly
*b Combination Meter Mirror ECU
*c Combination Meter Assembly
*d Local Bus Communication Line

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 DTC (AUDIO AND VISUAL SYSTEM) Click here

    A

  2. CHECK DTC (NAVIGATION SYSTEM)


    1. Check for DTCs Click here.

      OK
      No DTCs are output.

    NG

    GO TO NAVIGATION SYSTEM Click here

    OK

  3. CHECK DTC (AUDIO AND VISUAL SYSTEM)


    1. Check for DTCs Click here.

      OK
      No DTCs are output.

    NG

    GO TO AUDIO AND VISUAL SYSTEM Click here

    OK

  4. CHECK HARNESS AND CONNECTOR


    1. Disconnect the P1 combination meter mirror ECU connector.

    2. Disconnect the N164 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P1-14 (TX+) - N164-3 (CAH1) Always Below 1 Ω
      P1-15 (TX-) - N164-3 (CAL1)

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  5. CHECK DTC


    1. Check if head up display system DTCs are output.

      OK
      DTC B150A is not output.

    A

    REPLACE METER MIRROR SUB-ASSEMBLY Click here

    NG

    MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here