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

DESCRIPTION

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

B005XSNE04

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 Click here.

Tech Tips

The navigation receiver assembly is the master unit.

PROCEDURE


  1. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. Remove the navigation receiver assembly Click here.

    2. B005Y13E02
      Text in Illustration
      *A w/ Intelligent Parking Assist 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
      L38-7 (TX1+) - L38-8 (TX1-) Always 60 to 80 Ω
      L173-7 (TX3+) - L173-8 (TX3-)* Always 60 to 80 Ω

      • *: w/ Intelligent Parking Assist System


    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

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


    1. Disconnect the L38 navigation receiver assembly connector.

    2. Disconnect the L173 navigation receiver assembly connector (w/ Intelligent Parking Assist System).

    3. Disconnect the L31 stereo component amplifier assembly connector.

    4. Disconnect the L64 parking assist ECU connector (w/ Intelligent Parking Assist System).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L31-8 (TX+) - L38-7 (TX1+) Always Below 1 Ω
      L31-7 (TX-) - L38-8 (TX1-) Always Below 1 Ω
      L64-11 (TX+) - L173-7 (TX3+)* Always Below 1 Ω
      L64-10 (TX-) - L173-8 (TX3-)* Always Below 1 Ω
      L31-8 (TX+) - Body ground Always 10 kΩ or higher
      L31-7 (TX-) - Body ground Always 10 kΩ or higher
      L64-11 (TX+) - Body ground* Always 10 kΩ or higher
      L64-10 (TX-) - Body ground* Always 10 kΩ or higher

      • *: w/ Intelligent Parking Assist System


    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.

      Tech Tips


      • Check all slave units.

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

      OK
      Master unit returns to normal.

    OK

    REPLACE MALFUNCTIONING PARTS

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here