NAVIGATION SYSTEM, Diagnostic DTC:B15D8

DTC Code DTC Name
B15D8 Monitor Disconnected

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B15D8* 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

  • Multi-media module receiver assembly

Tech Tips


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

  • The multi-media module receiver assembly is the master unit.

WIRING DIAGRAM

A01EOPYE09

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK DTC


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

      OK
      No DTCs are output

    NG

    CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

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


    1. A01EMY0E17
      Text in Illustration
      *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
      F74-4 (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
      F74-1 (+B) - F74-4 (GND1) Always 11 to 14 V
      F74-8 (IG) - F74-4 (GND1) Engine switch on (IG) 11 to 14 V
      F74-9 (ACC) - F74-4 (GND1) Engine switch on (ACC) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A01EODEE09

      Remove the multi-media module 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 (TX1+) - 8 (TX1-) Always 60 to 80 Ω

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - PARKING ASSIST ECU)


    1. Disconnect the F76 multi-media module receiver assembly connector.

    2. Disconnect the F74 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F76-7 (TX1+) - F74-11 (TX+) Always Below 1 Ω
      F76-8 (TX1-) - F74-10 (TX-) Always Below 1 Ω
      F76-7 (TX1+) - Body ground Always 10 kΩ or higher
      F76-8 (TX1-) - Body ground Always 10 kΩ or higher

    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.


    NEXT

  7. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  8. CHECK DTC


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


    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

    END (PARKING ASSIST ECU IS DEFECTIVE)