NAVIGATION SYSTEM (for Radio and Display Type), Diagnostic DTC:B157E

DTC Code DTC Name
B157E Bluetooth Antenna Disconnected

DESCRIPTION

This DTC is stored when a malfunction occurs in the "Bluetooth" antenna which is connected to the navigation ECU.

The "Bluetooth" antenna is built into the radio and display receiver assembly.

DTC Code DTC Detection Condition Trouble Area
B157E "Bluetooth" antenna is not connected

  • Navigation ECU

  • Radio and display receiver assembly

  • Antenna cord sub-assembly (for "Bluetooth")

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK ANTENNA CORD SUB-ASSEMBLY (for "Bluetooth")


    1. Replace the antenna cord sub-assembly (for "Bluetooth") with a known good one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs are output.

    NG

    CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END (ANTENNA CORD SUB-ASSEMBLY [for "Bluetooth"] IS DEFECTIVE)

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Replace the radio and display receiver assembly with a known good one. Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs are output.

    NG

    REPLACE NAVIGATION ECU Click here

    OK

    END (RADIO AND DISPLAY RECEIVER ASSEMBLY IS DEFECTIVE)