NAVIGATION SYSTEM (for HDD), Diagnostic DTC:B1595, B15D5

DTC Code DTC Name
B1595 No Response from Rear Seat Entertainment System
B15D5 Rear Seat Entertainment System Disconnected

DESCRIPTION

The display and navigation module display and the television display assembly are connected by the MOST communication line.

When a MOST communication error occurs between the display and navigation module display and the television display assembly, these DTCs is stored.

DTC Code DTC Detection Condition Trouble Area
B1595 No response to the diagnostic memory request from the master unit.

  • Television display assembly power source circuit

  • MOST circuit between television display assembly and display and navigation module display

  • MOST circuit between television display assembly and radio receiver assembly

  • Television display assembly

  • Radio receiver assembly

  • Display and navigation module display
B15D5* A device that is listed in the MOST network connected device record of the master unit is missing.

Tech Tips


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

  • For the MOST network, the display and navigation module display is the master unit.

WIRING DIAGRAM

A009C3ZE01

INSPECTION PROCEDURE

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 MOST communication.

        • This DTC may be stored when a MOST communication error occurs due to electrical noise.


    B

    CHECK FOR DTC Click here

    A

  2. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


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

      Note

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


    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs Click here.

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

      OK
      No DTCs are output.

    NG

    CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY POWER SOURCE) Click here

    OK

    END

  4. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY POWER SOURCE)


    1. A0099JSE24
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Television Display Assembly)

      Disconnect the W14 television display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W14-10 (GND) - Body ground Always Below 1 Ω
      W14-11 (GND2) - 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
      W14-28 (+B) - W14-10 (GND) Always 11 to 14 V
      W14-14 (+B2) - W14-10 (GND) Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - RADIO RECEIVER)


    1. Disconnect the W14 television display assembly connector.

    2. Disconnect the H1 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W14-1 (MI+) - H1-11 (MO+) Always Below 1 Ω
      W14-2 (MI-) - H1-25 (MO-) Always Below 1 Ω
      W14-3 (SLDI) - H1-24 (SLDI) Always Below 1 Ω
      W14-1 (MI+) - Body ground Always 10 kΩ or higher
      W14-2 (MI) - Body ground Always 10 kΩ or higher
      W14-3 (SLDI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - DISPLAY AND NAVIGATION MODULE DISPLAY)


    1. Disconnect the W14 television display assembly connector.

    2. Disconnect the H2 display and navigation module display connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W14-6 (MO+) - H2-1 (MI+) Always Below 1 Ω
      W14-5 (MO-) - H2-5 (MI-) Always Below 1 Ω
      W14-4 (SLDO) - H2-2 (SLDI) Always Below 1 Ω
      W14-6 (MO+) - Body ground Always 10 kΩ or higher
      W14-5 (MO-) - Body ground Always 10 kΩ or higher
      W14-4 (SLDO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE TELEVISION DISPLAY ASSEMBLY


    1. Replace the television display assembly Click here.

    2. Clear the DTCs Click here.

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

      OK
      No DTCs are output.

    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Click here

    OK

    END