NAVIGATION SYSTEM(for Radio and Display Type) Data Signal Circuit between Stereo Jack Adapter and Extension Module

DESCRIPTION

The No. 1 stereo jack adapter assembly sends the sound data signal or image data signal from a USB device to the navigation ECU via this circuit.

WIRING DIAGRAM

A005EMYE20
*a (Shielded)
*b No. 1 Stereo Jack Adapter Assembly
*c Navigation ECU
*d Data Signal (USB Communication Line)

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - NO. 1 STEREO JACK ADAPTER ASSEMBLY)


    1. A005EDSE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Navigation ECU)
      *b

      Front view of wire harness connector

      (to No. 1 Stereo Jack Adapter Assembly)

      Disconnect the L175 navigation ECU connector.

    2. Disconnect the L174 No. 1 stereo jack adapter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L175-2 (US1-) - L174-2 (UDO-) Always Below 1 Ω
      L175-3 (US1+) - L174-3 (UDO+) Always Below 1 Ω
      L175-5 (USG1) - L174-5 (USG1) Always Below 1 Ω
      L175-2 (US1-) - Body ground Always 10 kΩ or higher
      L175-3 (US1+) - Body ground Always 10 kΩ or higher
      L175-5 (USG1) - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR