NAVIGATION SYSTEM(for Navigation Receiver Type) AVC-LAN Circuit

DESCRIPTION

Each unit of the navigation system connected to the AVC-LAN communicates via AVC-LAN communication.

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.

WIRING DIAGRAM

A0028MPE05

CAUTION / NOTICE / HINT

Note


  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

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Tech Tips

The navigation receiver assembly is the master unit.

PROCEDURE


  1. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. Remove the navigation receiver assembly.

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    2. A0029SKC07
      *A w/ Panoramic View Monitor System
      *a

      Component without harness connected

      (Navigation Receiver Assembly)
      A002C7GC05
      *A w/ Rear Seat Entertainment System
      *a

      Component without harness connected

      (Navigation Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F117-7 (TX3+) - F117-8 (TX3-)*1 Always 60 to 80 Ω
      F118-9 (TX+) - F118-10 (TX-)*2 Always 60 to 80 Ω

      • *1: w/ Panoramic View Monitor System

      • *2: w/ Rear Seat Entertainment System

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)


    1. Disconnect the F117*1 and F118*2 navigation receiver assembly connectors.


      • *1: w/ Panoramic View Monitor System

        *2: w/ Rear Seat Entertainment System

    2. Disconnect the F131 parking assist ECU connector (w/ Panoramic View Monitor System).

    3. Disconnect the S8 television display assembly connector (w/ Rear Seat Entertainment System).

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

      Standard Resistance (w/ Panoramic View Monitor System)
      Tester Connection Condition Specified Condition
      F117-7 (TX3+) - F131-10 (TX+) Always Below 1 Ω
      F117-8 (TX3-) - F131-9 (TX-) Always Below 1 Ω
      F117-7 (TX3+) or F131-10 (TX+) - Body ground Always 10 kΩ or higher
      F117-8 (TX3-) or F131-9 (TX-) - Body ground Always 10 kΩ or higher
      Standard Resistance (w/ Rear Seat Entertainment System)
      Tester Connection Condition Specified Condition
      F118-9 (TX+) - S8-3 (TX1+) Always Below 1 Ω
      F118-10 (TX-) - S8-4 (TX1-) Always Below 1 Ω
      F118-9 (TX+) or S8-3 (TX1+) - Body ground Always 10 kΩ or higher
      F118-10 (TX-) or S8-4 (TX1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT MALFUNCTIONING PARTS


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

      Tech Tips


      • 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.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MALFUNCTIONING PARTS

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here