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NAVIGATION SYSTEM, Diagnostic DTC:B15D8

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DTC Code DTC Name
B15D8 Monitor Disconnected
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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
Tip:

  • *: 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.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

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PROCEDURE


  1. Click here

    CLEAR DTC


    1. Clear the DTCs (Click here).


  2. Click here

    CHECK DTC


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

      OK
      No DTCs are output

  3. Click here

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


    1. B001W2QE02

      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
      F75-4 (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
      F75-1 (+B) - F75-4 (GND1) Always 11 to 14 V
      F75-8 (IG) - F75-4 (GND1) Engine switch on (IG) 11 to 14 V
      F75-9 (ACC) - F75-4 (GND1) Engine switch on (ACC) 11 to 14 V
      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Parking Assist ECU)

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. B001XXJE09

      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

  5. Click here

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


    1. Disconnect the F77 multi-media module receiver assembly connector.

    2. Disconnect the F75 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F77-7 (TX1+) - F75-11 (TX+) Always Below 1 Ω
      F77-8 (TX1-) - F75-10 (TX-) Always Below 1 Ω
      F77-7 (TX1+) - Body ground Always 10 kΩ or higher
      F77-8 (TX1-) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    REPLACE PARKING ASSIST ECU


    1. Replace the parking assist ECU with a new or normally functioning one (Click here).


  7. Click here

    CLEAR DTC


    1. Clear the DTCs (Click here).


  8. Click here

    CHECK DTC


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


    • OK

      END (PARKING ASSIST ECU IS DEFECTIVE)

    • NG

      REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY (Click here)