NAVIGATION SYSTEM, Diagnostic DTC:01-DF

DTC Code DTC Name
01-DF Master Error

DESCRIPTION

DTC No. DTC Detection Condition Trouble Area

01-DF

*1

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

  • A communication error between sub-master (radio receiver) and master occurs.

  • Multi-display power source circuit


  • AVC-LAN circuit between the multi-display and the component which has stored this code


  • AVC-LAN circuit between the multi-display and the radio receiver


  • Multi-display


  • Component which has stored this code

Tech Tips

*1: 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 multi-display 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 MULTI-DISPLAY POWER SOURCE CIRCUIT

    Refer to Multi-display Power Source Circuit Click here.

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


    NEXT

  2. INSPECT RADIO RECEIVER


    1. A0163DME01

      Disconnect the radio receiver connectors.

    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

      J63-9 (TX+) -

      J63-10 (TX-)

      		 Always 60 to 80 Ω

    NG

    REPLACE RADIO RECEIVER Click here

    OK

  3. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE


    1. A01636BE33

      Enter the diagnostic mode.

    2. Press the "LAN Mon" switch to change to "LAN Monitor" mode.

    3. Identify the component which has stored this code.

      Component Table
      Display Component
      AUDIO H/U Radio receiver
      DSP-AMP Stereo component amplifier
      G/W Gateway ECU
      NAVI Navigation ECU
      CAMERA-C Television camera ECU

      Tech Tips

      "NAVI" is the component which has stored this code in the example shown in the illustration.


    NEXT

  4. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - 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 multi-display and the component which has stored this code.


      1. Disconnect all connectors between the multi-display and the component which has stored this code.

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

        OK
        There are no open or short circuits.
        A0161DBE01

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - RADIO RECEIVER)

    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 multi-display and the radio receiver.


      1. Disconnect all connectors between the multi-display and the radio receiver.

      2. Check for an open or short in the AVC-LAN circuit between the multi-display and the radio receiver.

        OK
        There are no open or short circuits.
        A0162P1E02

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE MULTI-DISPLAY


    1. Replace the multi-display with a known good one and check if the same problem occurs again.

      OK
      Same problem does not occur.

    NG

    REPLACE COMPONENT WHICH HAS STORED THIS CODE

    OK

    END