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

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

DTC No. DTC Detection Condition Trouble Area
01-D6*1

Either condition is met:


  • The device that stores (stored) the DTC has (had) been disconnected while the ignition switch is ON or ACC.

  • The master device has (had) been disconnected when this DTC is (was) 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

Either condition is met:


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

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

  • *1: Even if no fault is present, this DTC 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 ignition switch ON or ACC, this DTC is stored.

Note:

  • Before starting troubleshooting, be sure to clear the 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 for DTCs after the inspection is completed to confirm that no DTCs are output.

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INSPECTION PROCEDURE

Note:

Be sure to read Description before performing the following procedure.

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PROCEDURE


  1. Click here

    CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

    Tip:

    Refer to Radio Receiver Power Source Circuit (Click here).

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


  2. Click here

    IDENTIFY COMPONENT WHICH HAS STORED THIS CODE


    1. A017F5QE13

      Enter diagnostic mode.

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

    3. Identify the component which has stored this code.

      Table 1. Component Table
      Component Physical Address
      Multi-media interface ECU 388
      Tip:

      • The physical address "P440" shown in the above example indicates the stereo component amplifier.

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


  3. Click here

    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.

      Table 2. Component Table
      Component Proceed to
      Multi-media interface ECU

      Multi-media interface ECU power source circuit (Click here)

  4. Click here

    INSPECT RADIO RECEIVER


    1. A017C4FE20

      Disconnect the radio receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E24-9 (TXM+) - E24-10 (TXM-) Always 60 to 80 Ω
      Table 3. Text in Illustration
      *a

      Component without harness connected

      (Radio Receiver)

  5. Click here

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

    Tip:

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


    1. Referring to the following AVC-LAN wiring diagram, check the AVC-LAN circuit between the radio receiver and component which has stored this code.


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

      2. A017C7AE13

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

        OK
        There is no open or short circuit.

  6. Click here

    REPLACE COMPONENT WHICH HAS STORED THIS CODE


    1. Replace the component which has stored this code with a known good one.


  7. Click here

    CLEAR DTC


    1. Clear the DTCs (Click here).


  8. Click here

    RECHECK FOR DTC


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

      OK
      No DTCs are output.

  9. Click here

    END

  10. Click here

    REPLACE RADIO RECEIVERClick here

  11. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR