AUDIO AND VISUAL SYSTEM(for Radio and Display Type), Diagnostic DTC:B157D

DTC Code DTC Name
B157D DAB Tuner Antenna Disconnected

DESCRIPTION

This DTC is stored when a malfunction occurs in the digital audio broadcasting antenna assembly which is connected to the radio and display receiver assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B157D DAB Tuner Antenna Disconnected The windshild glass (window glass antenna wire) is not connected
  • Antenna cord sub-assembly

  • No. 2 antenna cord sub-assembly

  • Windshield glass (window glass antenna wire)

  • Radio and display receiver assembly

WIRING DIAGRAM

B00259PE01

CAUTION / NOTICE / HINT

Tech Tips

When replacing the radio and display receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services (w/ Connected Services Function).

Click here

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs
    2. Recheck for DTCs and check that no DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK
    NG
  2. CHECK CONNECTION OF DAB RADIO ANTENNA CABLE


    1. Check if the DAB radio antenna cable is securely connected to the radio and display receiver assembly.

      OK
      DAB radio antenna cable is securely connected.
      Result
      Proceed to
      OK
      NG

    NG
    OK
  3. CHECK WINDSHIELD GLASS (WINDOW GLASS ANTENNA WIRE)


    1. Inspect the windshield glass (window glass antenna wire).

      Click here

      Result
      Proceed to
      OK
      NG

    NG
    OK
  4. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. B0024UMC02
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      *b

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)

      Remove the antenna connector from the radio and display receiver assembly.

    2. Remove the antenna connector from the No. 2 antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      DB-1 - 1 Always Below 1 Ω
      DB-1a - 1a Always Below 1 Ω
      DB-1 - Body ground Always 10 kΩ or higher
      DB-1a - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  5. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY


    1. B0028OMC01
      *a

      Front view of wire harness connector

      (to Antenna Cord Sub-assembly)

      *b

      Front view of wire harness connector

      (to Digital Audio Broadcasting Antenna Assembly)

      Remove the antenna connector from the antenna cord sub-assembly.

    2. Remove the antenna connector from the digital audio broadcasting antenna assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 1 Always Below 1 Ω
      1a - 1a Always Below 1 Ω
      1 - Body ground Always 10 kΩ or higher
      1a - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK
    NG