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NAVIGATION SYSTEM (for HDD) AVC-LAN Circuit

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DTC Code DTC Name
  AVC-LAN Circuit
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DESCRIPTION

Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the switch signals using the AVC-LAN.

If a short to +B or short to ground occurs in the AVC-LAN, the navigation system will not function normally because communication is not possible.

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INSPECTION PROCEDURE

Note:

The navigation receiver assembly is the master unit.

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PROCEDURE


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    INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. A017EYNE13

      Disconnect the E23 navigation receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E23-9 (TXM+) - E23-10 (TXM-) Always 60 to 80 Ω
      Table 1. Text in Illustration
      *a

      Component without harness connected

      (Navigation Receiver Assembly)

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    CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)

    Tip:

    For details of the connectors, refer to Terminals of ECU (Click here).


    1. Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.


      1. Disconnect all connectors in all AVC-LAN circuits.

      2. A017B9DE06

        Check for an open or short in all AVC-LAN circuits.

        OK
        There is no open or short circuit.

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    REPLACE NAVIGATION RECEIVER ASSEMBLYClick here

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    REPLACE NAVIGATION RECEIVER ASSEMBLYClick here

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    INSPECT MALFUNCTIONING PARTS


    1. Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.

      Tip:

      • Check all slave units.

      • If disconnecting a slave unit causes the master unit to return to normal operation, the slave unit is defective and should be replaced.

      OK
      Master unit returns to normal operation.

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    REPLACE MALFUNCTIONING PARTS