AUDIO AND VISUAL SYSTEM (for Radio Receiver Type), Diagnostic DTC:01-DF

DTC Code DTC Name
01-DF Master Error

DESCRIPTION

DTC No. DTC Detection Condition Trouble Area
01-DF

The device with a display fails and the master unit is switched to the audio device.

Also when a communication error between the sub-master unit (audio) and master unit occurs, this DTC is stored.

  • Radio receiver power source circuit

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

  • Radio receiver assembly

  • Component which has stored this code

Tech Tips

When 210 seconds have elapsed after disconnecting the power supply connector of the master unit with the power switch on (IG) or (ACC), this DTC is stored.

Note


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

  • The radio receiver assembly is the master unit.

  • Be sure to clear and recheck for 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 procedure.

PROCEDURE


  1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT


    1. Refer to Radio Receiver Power Source Circuit Click here.

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


    NEXT

  2. INSPECT RADIO RECEIVER ASSEMBLY


    1. A003TXVE18
      Text in Illustration
      *a

      Component without harness connected

      (Radio Receiver Assembly)

      Disconnect the radio receiver assembly connector(s).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E99-9 (TXM+) - E99-10 (TXM-) Always 60 to 80 Ω

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

  3. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE


    1. Enter diagnostic mode.

      A003UEDE13

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

    3. Identify the component which has stored this code.

      Component Table
      Component Physical Address
      Multi-media interface ECU 388

      Tech Tips


      • 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.


    NEXT

  4. CHECK HARNESS AND CONNECTOR

    Tech Tips

    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 assembly and component which has stored this code.


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

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

        OK
        There is no open or short circuit.
        A003TF1E11

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE RADIO RECEIVER ASSEMBLY


    1. Replace the radio receiver assembly with a known good one.


    NEXT

  6. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  7. RECHECK FOR DTC


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

      OK
      No DTCs are output.

    NG

    REPLACE COMPONENT WHICH HAS STORED THIS CODE

    OK

    END