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

DTC Code DTC Name
B15D8 Monitor Disconnected

DESCRIPTION

The parking assist ECU and radio receiver assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the radio 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.

  • Parking assist ECU power source circuit

  • AVC-LAN circuit

  • Parking assist ECU

  • Radio receiver assembly

Tech Tips

For the AVC-LAN communication line, the radio receiver assembly is the master unit.

WIRING DIAGRAM

B002KLUE01

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


    1. Check for optional components.


      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. CHECK 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.

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. 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 (COMMUNICATION MULFUNCTION DUE TO NOISE)

    NG

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


    1. B002J67C02
      *a

      Front view of wire harness connector

      (to Parking Assist ECU)

      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
      P19-3 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      P19-2 (+B) - P19-3 (GND1) Power switch off 11 to 14 V
      P19-8 (IG) - P19-3 (GND1) Power switch on (IG) 11 to 14 V
      P19-1 (ACC) - P19-3 (GND1) Power switch on (ACC) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT RADIO RECEIVER ASSEMBLY


    1. B002JL7E02

      Remove the radio 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 RECEIVER ASSEMBLY Click here

    OK

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


    1. Disconnect the I122 radio receiver assembly connector.

    2. Disconnect the I19 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I122-7 (TX3+) - I19-13 (TX+) Always Below 1 Ω
      I122-8 (TX3-) - I19-12 (TX-) Always Below 1 Ω
      I122-7 (TX3+) or I19-13 (TX+) - Body ground Always 10 kΩ or higher
      I122-8 (TX3-) or I19-12 (TX-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK PARKING ASSIST ECU


    1. Replace the parking assist ECU.

      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.

      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 RECEIVER ASSEMBLY Click here