NAVIGATION SYSTEM(for DVD), Diagnostic DTC:B1595 and 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 multi-display controller sub-assembly are connected by the MOST communication line.

When a MOST communication error occurs between the display and navigation module display and the multi-display controller sub-assembly, these DTCs are stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1595

No Response from Rear Seat Entertainment System

No response to the diagnostic memory request from the master unit.

  • Harness or connector

  • Multi-display controller sub-assembly

  • Radio receiver assembly

  • Display and navigation module display

B15D5

Rear Seat Entertainment System Disconnected

A device that is listed in the MOST network connected device record of the master unit is missing.

  • Harness or connector

  • Multi-display controller sub-assembly

  • Radio receiver assembly

  • Display and navigation module display
Tip:

  • B15D5: 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

E205530E01

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 MOST communication.

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

    B

    CHECK FOR DTCClick 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.

      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 (MULTI-DISPLAY CONTROLLER POWER SOURCE)

    1. E192430C03

      *a

      Front view of wire harness connector

      (to Multi-display Controller Sub-assembly)

      Disconnect the H16 multi-display controller sub-assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H16-21 (GND) - Body ground

      Always

      Below 1 Ω

      H16-22 (GND5) - 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

      H16-14 (+B) - H16-21 (GND)

      Always

      11 to 14 V

      H16-28 (+B2) - H16-21 (GND)

      Always

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the H16 multi-display controller sub-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

      H16-1 (MI+) - H1-11 (MO+)

      Always

      Below 1 Ω

      H16-2 (MI-) - H1-25 (MO-)

      Always

      Below 1 Ω

      H16-3 (SLDI) - H1-24 (SLDI)

      Always

      Below 1 Ω

      H16-1 (MI+) - Body ground

      Always

      10 kΩ or higher

      H16-2 (MI-) - Body ground

      Always

      10 kΩ or higher

      H16-3 (SLDI) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the H16 multi-display controller sub-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

      H16-6 (MO+) - H2-1 (MI+)

      Always

      Below 1 Ω

      H16-5 (MO-) - H2-5 (MI-)

      Always

      Below 1 Ω

      H16-4 (SLDO) - H2-2 (SLDI)

      Always

      Below 1 Ω

      H16-6 (MO+) - Body ground

      Always

      10 kΩ or higher

      H16-5 (MO-) - Body ground

      Always

      10 kΩ or higher

      H16-4 (SLDO) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY

    1. Replace the multi-display controller sub-assembly.

      Click here

    2. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

    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 (MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click here