NAVIGATION SYSTEM, 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" / "Wi-Fi")

CAUTION / NOTICE / HINT

Note:

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections (Click here).

PROCEDURE

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

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

    2. Clear the DTCs (Click here).

    3. Check for DTCs (Click here).

      OK

      No DTCs are output.

    END (ANTENNA CORD SUB-ASSEMBLY [for "Bluetooth" / "Wi-Fi"] 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.

    END (RADIO AND DISPLAY RECEIVER ASSEMBLY IS DEFECTIVE)

    REPLACE NAVIGATION ECU

    (Click here)