NAVIGATION SYSTEM (for DVD) Navigation Receiver Assembly Communication Error

INSPECTION PROCEDURE

PROCEDURE


  1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE


    1. A017FZME16

      Enter the diagnostic mode.

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

    3. Identify the component shown by the sub-code.

      Tech Tips


      • "110 (multi-display)" is the component shown by the sub-code in the example shown in the illustration.

      • The sub-code will be indicated by its physical address.

      • For the component list, refer to "DIAGNOSIS DISPLAY DETAILED DESCRIPTION" Click here.


    NEXT

  2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE


    1. Inspect the power source circuit of the component shown by the sub-code.

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

      Component Table:
      Component Proceed to
      1AC (Television camera ECU)

      Television camera ECU power source circuit Click here


    NEXT

  3. CHECK 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

  4. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - COMPONENT SHOWN BY SUB-CODE)

    Tech Tips


    • Start the check from the circuit that is near the component shown by the sub-code first.

    • 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 shown by the sub-code.


      1. Disconnect all connectors between the navigation receiver assembly and the component shown by the sub-code.

      2. Check for an open or short in the AVC-LAN circuit between the navigation receiver assembly and the component shown by the sub-code.

        A017EUUE01
        OK
        There are no open or short circuits.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE COMPONENT SHOWN BY SUB-CODE


    1. Replace the component shown by the sub-code with a normal one and check if the same problem occurs again.

      OK
      Same problem does not occur.

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

    END