NAVIGATION SYSTEM (for DVD), 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 the sub-master (television camera ECU) and master occurs.

  • Navigation receiver assembly power source circuit


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


  • AVC-LAN circuit between the navigation receiver assembly and the television camera ECU


  • Navigation receiver assembly


  • 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 ignition switch on (IG or ACC), this code is stored.

Note


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

  • The navigation 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 procedures.

PROCEDURE


  1. CHECK NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT

    Refer to the "Navigation Receiver Assembly Power Source Circuit" Click here.

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


    NEXT

  2. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. A017EWYE01

      Disconnect navigation receiver assembly connector E2.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E2-9 (TX+) - E2-10 (TX-) Always 60 to 80 Ω

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  3. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE


    1. A017FZME14

      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
      CAMERA-C Television camera ECU

      Tech Tips

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


    NEXT

  4. CHECK HARNESS AND CONNECTOR

    Tech Tips

    For details of the connectors, refer to "TERMINALS OF ECU" Click here.


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


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

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

        A017EUUE01
        OK
        There is no open or short circuit.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE NAVIGATION RECEIVER ASSEMBLY


    1. Replace the navigation receiver assembly with a normal one and check if the same problem occurs again Click here.

      OK
      Same problem does not occur.

    NG

    REPLACE COMPONENT WHICH HAS STORED THIS CODE

    OK

    END