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

DTC Code DTC Name
B15D8 Monitor Disconnected

DESCRIPTION

The radio and display receiver assembly and parking assist ECU communicate via AVC-LAN communication.

This DTC is stored when an AVC-LAN communication error occurs between the radio and display receiver assembly and parking assist ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D8 Monitor Disconnected The parking assist ECU was not connected while the engine switch was on (ACC) or on (IG)

  • AVC-LAN circuit

  • Parking assist ECU

  • Radio and display receiver assembly

  • Harness or connector

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

A002AXNE01

CAUTION / NOTICE / HINT

Note


  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

    Click here

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

PROCEDURE


  1. CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


    1. Check that optional components (including associated wiring) which generate radio waves are not installed.

      Result
      Result Proceed to
      Optional components (including associated wiring) are installed. A
      Optional components (including associated wiring) are not installed. B

      Tech Tips


      • Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.

      • This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.


    B

    GO TO STEP 3 Click here

    A

  2. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


    1. Remove optional components (including associated wiring).

      Note

      Do not remove optional components or associated wiring without the permission of the customer.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

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


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

    OK

    END

    NG

  4. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU POWER SOURCE)


    1. Disconnect the F131 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F131-3 (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
      F131-2 (+B) - F131-3 (GND1) Always 11 to 14 V
      F131-1 (ACC) - F131-3 (GND1) Engine switch on (ACC) 11 to 14 V
      F131-6 (IG) - F131-3 (GND1) Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the F72 radio and display receiver assembly connector.

    2. Disconnect the F131 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F72-7 (TX3+) - F131-10 (TX+) Always Below 1 Ω
      F72-8 (TX3-) - F131-9 (TX-) Always Below 1 Ω
      F72-7 (TX3+) or F131-10 (TX+) - Body ground Always 10 kΩ or higher
      F72-8 (TX3-) or F131-9 (TX-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  6. REPLACE PARKING ASSIST ECU


    1. Replace the parking assist ECU with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

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


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

    OK

    END

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here