AUDIO AND VISUAL SYSTEM(w/ Multi-display), 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 multi-media module receiver assembly.

DTC Code DTC Detection Condition Trouble Area
B157D The No. 2 amplifier antenna assembly is not connected

  • Antenna cord sub-assembly

  • No. 2 antenna cord sub-assembly

  • No. 4 antenna cord sub-assembly

  • Quarter window glass (Window glass antenna wire)

  • Multi-media module receiver assembly

WIRING DIAGRAM

A01X1PZE08

CAUTION / NOTICE / HINT

Note

Check that the antenna cable is properly installed and does not have any sharp bends, pinching or loose connections.

PROCEDURE


  1. CHECK CONNECTION OF DAB RADIO ANTENNA CABLE


    1. Check if the DAB radio antenna cable is securely connected to the multi-media module receiver assembly.

      OK
      DAB radio antenna cable is securely connected.

    NG

    SECURELY CONNECT DAB RADIO ANTENNA CABLE

    OK

  2. CHECK QUARTER WINDOW ASSEMBLY (WINDOW GLASS ANTENNA WIRE)


    1. Inspect the quarter window glass (window glass antenna wire) Click here.


    NG

    REPAIR WINDOW GLASS ANTENNA WIRE Click here

    OK

  3. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. A01X0NOE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Multi-media Module Receiver Assembly)
      *b

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)

      Remove the antenna connector from the multi-media module 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 (DAB) - 4 Always Below 1 Ω
      DB-1a - 4a Always Below 1 Ω
      DB-1 (DAB) or 4 - Body ground Always 10 kΩ or higher
      DB-1a or 4a - Body ground Always 10 kΩ or higher

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  4. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY


    1. A01X8NFE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Antenna Cord Sub-assembly)
      *b

      Front view of wire harness connector

      (to No. 4 Antenna Cord Sub-assembly)

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

    2. Remove the antenna connector from the No. 4 antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 - 3 Always Below 1 Ω
      4a - 3a Always Below 1 Ω
      4 or 3 - Body ground Always 10 kΩ or higher
      4a or 3a - Body ground Always 10 kΩ or higher

    NG

    REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  5. CHECK NO. 4 ANTENNA CORD SUB-ASSEMBLY


    1. A01X8RBE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)
      *b

      Front view of wire harness connector

      (to Quarter Window Glass)

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

    2. Remove the antenna connector from the quarter window glass.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 1 Always Below 1 Ω
      3a - 1a Always Below 1 Ω
      3 or 1 - Body ground Always 10 kΩ or higher
      3a or 1a - Body ground Always 10 kΩ or higher

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    NG

    REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY Click here