NAVIGATION SYSTEM (for Navigation Receiver Type), Diagnostic DTC:B1550, B15A0, B15AD, B15B0, B15B3, B15B4, B15B7

DTC Code DTC Name
B1550 DAB Tuner Malfunction
B15A0 LAN Master Malfunction
B15AD Navigation Processor Malfunction
B15B0 Display Screen Malfunction
B15B3 Radio Tuner Malfunction
B15B4 CD Changer Malfunction
B15B7 Bluetooth Module Malfunction

DESCRIPTION

These DTCs are stored when a malfunction occurs in the navigation ECU sub-assembly.

DTC No. DTC Detection Condition Trouble Area
B1550

When one of the conditions below is met:


  • DAB tuner decoder malfunction

  • DAB tuner audio output section malfunction

  • DAB tuner decoder RF/IF malfunction

  • DAB tuner control communication error

  • DAB tuner TPEG communication error

  • DAB tuner OFDM error

  • DAB tuner memory error

 Navigation ECU sub-assembly
B15A0

When either condition below is met:


  • Bus malfunction

  • EEPROM error
B15AD

When one of the conditions below is met:


  • A short to ground, short to +B or open occurs in the gyro signal circuit

  • Gyro sensor malfunction

  • GPS receiver malfunction
B15B0 Picture circuit (TFT unit) malfunction
B15B3

When one of the conditions below is met:


  • AM tuner PLL is unlocked

  • FM tuner PLL is unlocked

  • Tuner malfunction
B15B4

When one of the conditions below is met:


  • Mechanism drive signal malfunction

  • Load/Eject malfunction

  • Read mechanism malfunction

  • Mechanical malfunction
B15B7 "Bluetooth" module malfunction

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here