NAVIGATION SYSTEM, Diagnostic DTC:B15D9

DTC Code DTC Name
B15D9 Operation Panel Disconnected

DESCRIPTION

The air conditioning control assembly (switch and volume) and radio receiver assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the radio receiver assembly and air conditioning control assembly (switch and volume), these DTCs will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D9 Operation Panel Disconnected A device that is listed in the AVC-LAN connected device record of the master unit is missing.

  • Air conditioning control assembly (switch and volume) power source circuit

  • AVC-LAN circuit

  • Air conditioning control assembly (switch and volume)

  • Multi-display

  • Radio receiver assembly

  • Harness or connector

Tech Tips

For the AVC-LAN communication line, the radio receiver assembly is the master unit.

WIRING DIAGRAM

B004YQUE03

CAUTION / NOTICE / HINT

Note


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

  • When replacing the radio receiver assembly, always replace it with a new one.

    If a radio receiver assembly which was installed to another vehicle is used, the following may occur:


    • A communication malfunction DTC may be stored.

    • The radio receiver assembly may not operate normally.

Tech Tips

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation 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

    GO TO STEP 4 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.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Recheck for DTCs and check that no DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (COMMUNICATION MALFUNCTION DUE TO NOISE)

    NG

  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY [SWITCH AND VOLUME] - BATTERY AND BODY GROUND)


    1. Disconnect the G80 air conditioning control assembly (switch and volume) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G80-4 (E) - 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
      G80-16 (+B) - Body ground Power switch off 11 to 14 V
      G80-7 (ACC) - Body ground Power switch on (ACC) 11 to 14 V
      G80-8 (IG+) - Body ground Power switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY [SWITCH AND VOLUME] - MULTI-DISPLAY)


    1. Disconnect the G80 air conditioning control assembly (switch and volume) connector.

    2. Disconnect the G51 multi-display connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G80-1 (TX1+) - G51-6 (TX1+) Always Below 1 Ω
      G80-2 (TX1-) - G51-18 (TX1-) Always Below 1 Ω
      G80-1 (TX1+) - Body ground Always 10 kΩ or higher
      G80-2 (TX1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK AIR CONDITIONING CONTROL ASSEMBLY (SWITCH AND VOLUME)


    1. Replace the air conditioning control assembly (switch and volume) with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (AIR CONDITIONING CONTROL ASSEMBLY [SWITCH AND VOLUME] IS DEFECTIVE)

    NG

  7. CHECK MULTI-DISPLAY


    1. Replace the multi-display with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (MULTI-DISPLAY IS DEFECTIVE)

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here