NAVIGATION SYSTEM(for DVD), Diagnostic DTC:B15D8

DTC Code DTC Name
B15D8 Monitor Disconnected

DESCRIPTION

The display and navigation module display and the parking assist ECU are connected by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the display and navigation module display and the parking assist ECU, this DTC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15D8

Monitor Disconnected

Either condition is met:

  • Parking assist ECU is/was not connected while the engine switch is on (IG) or on (ACC).

  • Communication between the master unit and the parking assist ECU is not possible when engine is started.

  • Harness or connector

  • Display and navigation module display

  • Parking assist ECU
Tip:

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

  • The display and navigation module display is the master unit.

WIRING DIAGRAM

E195575E06

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
        Tip:

        • 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

    CHECK FOR DTCClick here

    A

  2. REMOVE OPTIONAL COMPONENTS

    1. Remove the optional components (including associated wiring).

      Note:

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

    Result

    Result

    NEXT
    NEXT

  3. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs and check if the same trouble occurs again.

      Body Electrical > Navigation System > Trouble Codes

      OK

      No DTCs are output.

      Result

      Result

      OK

      NG
    OK

    END (OPTIONAL COMPONENTS IS DEFECTIVE)

    NG

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

    1. E185668C01

      *a

      Front view of wire harness connector

      (to Parking Assist ECU)

      Disconnect the I3 parking assist ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      I3-3 (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

      I3-1 (+B) - I3-3 (GND1)

      Always

      11 to 14 V

      I3-8 (ACC) - I3-3 (GND1)

      Engine switch on (ACC)

      11 to 14 V

      I3-7 (IG) - I3-3 (GND1)

      Engine switch on (IG)

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (AVC-LAN COMMUNICATION LINE)

    1. Disconnect the H3 display and navigation module display connector.

    2. Disconnect the I3 parking assist ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H3-1 (TX1+) - I3-25 (TX+)

      Always

      Below 1 Ω

      H3-2 (TX1-) - I3-24 (TX-)

      Always

      Below 1 Ω

      H3-1 (TX1+) - Body ground

      Always

      10 kΩ or higher

      H3-2 (TX1-) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE PARKING ASSIST ECU

    1. Replace the parking assist ECU.

      Click here

    2. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Trouble Codes

    3. Check for DTCs and check if the same trouble occurs again.

      Body Electrical > Navigation System > Trouble Codes

      OK

      No DTCs are output.

      Result

      Result

      OK

      NG
    OK

    END (PARKING ASSIST ECU IS DEFECTIVE)

    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click here