NAVIGATION SYSTEM(for Radio and Display Type), Diagnostic DTC:B15D8

DTC Code DTC Name
B15D8 Monitor Disconnected

DESCRIPTION

The parking assist ECU and radio and display receiver assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the radio and display receiver assembly and parking assist ECU, these DTCs will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D8 Monitor Disconnected A device that is listed in the AVC-LAN connected device record of the master unit is missing.

  • AVC-LAN circuit

  • Parking assist ECU

  • Radio and display receiver assembly

Tech Tips


  • Even if no fault is present, this DTC may be stored depending on the battery condition.

  • The radio and display receiver assembly is the master unit.

WIRING DIAGRAM

A01V8Y7E02

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections

    Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


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

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)


    1. A01V8OTE01

      Disconnect the parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a2-3 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      a2-2 (+B) - a2-3 (GND1) Always 11 to 14 V
      a2-6 (IG) - a2-3 (GND1) Ignition switch ON 11 to 14 V
      a2-1 (ACC) - a2-3 (GND1) Ignition switch ACC 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT RADIO & DISPLAY RECEIVER ASSEMBLY


    1. A01VA05E01

      Remove the radio and display receiver assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      7 (TX3+) - 8 (TX3-) Always 60 to 80 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO & DISPLAY RECEIVER ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING ASSIST ECU)


    1. Disconnect the G159 radio and display receiver assembly connector.

    2. Disconnect the a2 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G159-7 (TX3+) - a2-10 (TX+) Always Below 1 Ω
      G159-8 (TX3-) - a2-9 (TX-) Always Below 1 Ω
      G159-7 (TX3+) - Body ground Always 10 kΩ or higher
      G159-8 (TX3-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE PARKING ASSIST ECU


    1. Replace the parking assist ECU with a new or normally functioning one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  8. CHECK FOR DTC


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

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (PARKING ASSIST ECU IS DEFECTIVE)

    NG

    REPLACE RADIO & DISPLAY RECEIVER ASSEMBLY Click here