AUDIO AND VISUAL SYSTEM, Diagnostic DTC:01-D6, 01-D7

DTC Code DTC Name
01-D6 No Master
01-D7 Connection Check Error

DESCRIPTION

DTC No. DTC Detection Condition Trouble Area

01-D6

*1

When either of the following conditions is met:


  • The device that stores (stored) the code has (had) been disconnected when the engine switch is (was) on (ACC or IG).


  • The master device has (had) been disconnected when this code is stored.

  • Radio receiver power source circuit


  • Power source circuit of the component which has stored this code


  • AVC-LAN circuit between the radio receiver and the component which has stored this code


  • Component which has stored this code


  • Radio receiver

01-D7

*2

When either of the following conditions is met:


  • The device that stored the code has (had) been disconnected after the engine starts (started).


  • The master device has (had) been disconnected when this code is (was) stored.

Tech Tips


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


  • *2: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the engine switch on (ACC or IG), this code is stored.

Note


  • Before starting troubleshooting, be sure to clear DTCs stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.


  • The radio receiver is the master unit.


  • Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

INSPECTION PROCEDURE

Note

Be sure to read Description before performing the following procedures.

PROCEDURE


  1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

    Refer to Radio Receiver Power Source Circuit Click here.

    If the power source circuit is operating normally, proceed to the next step.


    NEXT

  2. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE


    1. Enter the diagnostic mode.

      A015YMGE12

    2. Press the preset switch "3" to change to "Detailed Information Mode".

    3. Identify the component which has stored this code.

      Component Table
      Component Physical Address
      Gateway ECU 1C6
      Stereo component amplifier 440
      Integration control & panel assembly 1D8

      Tech Tips


      • "440 (stereo component amplifier)" is the component which has stored this code in the example shown in the illustration.


      • For details of the DTC display, refer to DTC Check / Clear Click here.


    NEXT

  3. CHECK POWER SOURCE CIRCUIT OF COMPONENT WHICH HAS STORED THIS CODE


    1. Inspect the power source circuit of the component which has stored this code.

      If the power source circuit is operating normally, proceed to the next step.

      Component Table
      Component Proceed to
      Gateway ECU

      Gateway ECU Power Source Circuit Click here

      Stereo component amplifier

      Stereo Component Amplifier Power Source Circuit Click here

      Integration control & panel assembly

      Integration Control & Panel Assembly Power Source Circuit Click here


    NEXT

  4. INSPECT RADIO RECEIVER


    1. Disconnect the radio receiver connectors.

      A015YOTE01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J66-5 (ATX+) - J66-15 (ATX-) Always 60 to 80 Ω
      J65-9 (TXM+) - J65-10 (TXM-) Always 60 to 80 Ω
      J63-9 (TX+) - J63-10 (TX-) Always 60 to 80 Ω

    NG

    REPLACE RADIO RECEIVER Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

    Tech Tips

    For details of the connectors, refer to Terminals of ECU Click here.


    1. Referring to AVC-LAN Wiring Diagram below, check the AVC-LAN circuit between the radio receiver and the component which has stored this code.


      1. Disconnect all connectors between the radio receiver and the component which has stored this code.

      2. Check for an open or short in the AVC-LAN circuit between the radio receiver and the component which has stored this code.

        OK
        There are no open or short circuits.
        A015YWSE01

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE COMPONENT WHICH HAS STORED THIS CODE


    1. Replace the component which has stored this code with a known good one and check if the same problem occurs again.

      OK
      Same problem does not occur.

    NG

    REPLACE RADIO RECEIVER Click here

    OK

    END