AUDIO AND VISUAL SYSTEM(for 8 Inch Display), Diagnostic DTC:B15D8

DTC Code DTC Name
B15D8 Monitor Disconnected

DESCRIPTION

The radio receiver assembly and parking assist ECU are connected by AVC-LAN communication lines.

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

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

  • AVC-LAN circuit between radio receiver assembly and parking assist ECU

  • Parking assist ECU power source circuit

  • Parking assist ECU

  • Radio receiver assembly

  • Stop and start system*

  • Harness or connector

Tech Tips

The radio receiver assembly is the master unit.

WIRING DIAGRAM

B005O7LE05

CAUTION / NOTICE / HINT

Note


  • 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 J73 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J73-3 (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
      J73-2 (+B) - J73-3 (GND1) Always

      11 to 14 V*1

      9.5 to 14 V*2
      J73-1 (ACC) - J73-3 (GND1) Engine switch on (ACC)

      11 to 14 V*1

      9.5 to 14 V*2
      J73-6 (IG) - J73-3 (GND1) Engine switch on (IG)

      11 to 14 V*1

      9.5 to 14 V*2

      • *1: w/o Stop and Start System

        *2: w/ Stop and Start System

      Result
      Result Proceed to
      OK A
      NG (w/o Stop and Start System) B
      NG (w/ Stop and Start System) C

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    C

    GO TO STOP AND START SYSTEM Click here

    A

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


    1. Disconnect the J55 radio receiver assembly connector.

    2. Disconnect the J73 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J55-7 (TX3+) - J73-10 (TX+) Always Below 1 Ω
      J55-8 (TX3-) - J73-9 (TX-) Always Below 1 Ω
      J55-7 (TX3+) or J73-10 (TX+) - Body ground Always 10 kΩ or higher
      J55-8 (TX3-) or J73-9 (TX-) - 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 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 RECEIVER ASSEMBLY Click here