AUDIO AND VISUAL SYSTEM(w/o Multi-display), Diagnostic DTC:01-DF

DTC Code DTC Name
01-DF Master Error

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

01-DF

Master Error

Either condition is met:

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

  • A communication error between the sub-master (audio) and master occurs.

  • Radio receiver power source circuit

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

  • Radio receiver assembly

  • Component which has stored this code
Tip:

01-DF: When 210 seconds have elapsed after disconnecting the power supply connector of the master unit with the engine switch on (ACC) or on (IG), this code is stored.

Note:

  • Before starting troubleshooting, be sure to clear DTCs to clear codes stored due to the reasons described in 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 DTCs after the inspection is completed to confirm that no DTCs are output.

WIRING DIAGRAM

E195968E21

CAUTION / NOTICE / HINT

Note:

Be sure to read Description before performing the following procedures.

PROCEDURE

  1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

    1. Refer to Radio Receiver Power Source Circuit.

      Click here

      Tip:

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

      Result

      Result

      NEXT
    NEXT

  2. INSPECT RADIO RECEIVER ASSEMBLY

    1. E145834N03

      Disconnect the H29 and H28 radio receiver assembly connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H29-5 (ATX+) - H29-15 (ATX-)

      Always

      60 to 80 Ω

      H28-9 (TXM+) - H28-10 (TXM-)

      Always

      60 to 80 Ω

      Result

      Result

      OK

      NG
    NG

    REPLACE RADIO RECEIVER ASSEMBLY

    Click here

    OK

  3. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

    1. Enter the diagnostic mode.

      E146440N03

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

    3. Identify the component which has stored this code.

      Component Table

      Component

      Physical Address

      Radio receiver assembly

      190

      Stereo component amplifier assembly

      440

      Multi-media interface ECU

      388
      Tip:

      • "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

      Result

      Result

      NEXT
    NEXT

  4. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

    1. Select the component which has stored this code.

      Tip:

      The "Bluetooth" handsfree module is built into the radio receiver assembly. If there is a problem between the "Bluetooth" handsfree module and radio receiver assembly, replace the radio receiver assembly.

      Component Table

      Component

      Proceed to

      Except radio receiver assembly

      A

      Radio receiver assembly (190)

      B
    B

    REPLACE RADIO RECEIVER ASSEMBLY

    Click here

    A

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

    Tip:

    For details of connectors, refer to Terminals of ECU.

    Click here

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

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

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

        OK

        There is no open or short circuit.

        Result

        Result

        OK

        NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE RADIO RECEIVER ASSEMBLY

    1. Replace the radio receiver assembly.

      Click here

      OK

      Same problem does not occur.

      Result

      Result

      OK

      NG
    OK

    END

    NG

    REPLACE COMPONENT WHICH HAS STORED THIS CODE