NAVIGATION SYSTEM (for HDD), Diagnostic DTC:B1597, B15D6

DTC Code DTC Name
B1597 No Response from Display
B15D6 Display Disconnected

DESCRIPTION

The display and navigation module display and the multi-display assembly are connected by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the display and navigation module display and the multi-display assembly, these DTCs will be stored.

DTC No. DTC Detection Condition Trouble Area
B1597 No response to the diagnostic memory request from the master unit.

  • Multi-display assembly power source circuit

  • AVC-LAN circuit between display and navigation module display and multi-display assembly

  • Multi-display assembly

  • Display and navigation module display
B15D6*1 A device that is listed in the AVC-LAN connected device record of the master unit is missing.

Tech Tips


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

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

WIRING DIAGRAM

A01NEKTE01

INSPECTION PROCEDURE

Note


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

  • When replacing the display and navigation module display, perform vehicle contract setting (w/ G-BOOK system) Click here.

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 AVC-LAN communication.

        • This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.


    B

    CHECK DTC Click here

    A

  2. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


    1. Remove optional components (including associated wiring).

      Note

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


    NEXT

  3. CHECK DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check if the same DTC is output again.

      OK
      No DTCs are output.

    NG

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

    OK

    END

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


    1. A01NFN7E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Multi-display Assembly)

      Disconnect the G2 multi-display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G2-13 (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
      G2-12 (+B) - G2-13 (GND1) Power switch off 11 to 14 V
      G2-24 (ACC) - G2-13 (GND1) Power switch on (ACC) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR


    1. A01NFN7E02

      Disconnect the G2 multi-display assembly connector.

    2. A01NCTPE01

      Disconnect the G4 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
      G2-7 (TX+) - G4-13 (TX+) Always Below 1 Ω
      G2-19 (TX-) - G4-14 (TX-) Always Below 1 Ω
      G2-7 (TX+) - Body ground Always 10 kΩ or higher
      G2-19 (TX-) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Multi-display Assembly)
      *2

      Front view of wire harness connector

      (to Display and Navigation Module Display)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE MULTI-DISPLAY ASSEMBLY


    1. Replace the multi-display assembly Click here.

    2. Clear the DTCs Click here.

    3. Recheck for DTCs and check if the same DTC is output again.

      OK
      No DTCs are output.

    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Click here

    OK

    END