NAVIGATION SYSTEM (for Navigation Receiver Type), Diagnostic DTC:B1551, B15A0, B15AD, B15B0, B15B3, B15B5, B15B7, B15BA

DTC Code DTC Name
B1551 HD Radio Tuner Malfunction
B15A0 LAN Master Malfunction
B15AD Navigation Processor Malfunction
B15B0 Display Screen Malfunction
B15B3 Radio Tuner Malfunction
B15B5 DVD Changer Malfunction
B15B7 Bluetooth Module Malfunction
B15BA XM Tuner Malfunction

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
B1551

When one of the conditions below is met:


  • "HD Radio" tuner decoder malfunction

  • "HD Radio" tuner audio output section malfunction

  • "HD Radio" tuner decoder RF/IF malfunction

 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
B15B5

When one of the conditions below is met:


  • Mechanism drive signal malfunction

  • Load/Eject malfunction

  • Read mechanism malfunction

  • Mechanical malfunction
B15B7 "Bluetooth" module malfunction
B15BA

When either condition below is met:


  • Internal IC malfunction

  • Tuner assembly malfunction

INSPECTION PROCEDURE

Note

After replacing the navigation ECU sub-assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check if the same DTC is output again.

      OK
      No DTCs are output.

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here