NAVIGATION SYSTEM (for Radio and Display Type) Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio and display receiver assembly via this circuit.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly*1, radio and display receiver assembly, extension module, DCM (telematics transceiver)*2 or speakers.

WIRING DIAGRAM

A011RGHE03

INSPECTION PROCEDURE

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

    1. Disconnect the radio and display receiver assembly connector.

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

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

      A011UT4E13
      Standard Resistance
      Tester Connection Condition Specified Condition
      I155-25 (ADPG) - I146-9 (AUXO) Always Below 1 Ω
      I155-11 (AGND) - I146-10 (AGND) Always Below 1 Ω
      I155-26 (VAR+) - I146-6 (ARO) Always Below 1 Ω
      I155-28 (VAL+) - I146-7 (ALO) Always Below 1 Ω
      I155-27 (VA-) - I146-8 (ASGN) Always Below 1 Ω
      I155-25 (ADPG) - Body ground Always 10 kΩ or higher
      I155-11 (AGND) - Body ground Always 10 kΩ or higher
      I155-26 (VAR+) - Body ground Always 10 kΩ or higher
      I155-28 (VAL+) - Body ground Always 10 kΩ or higher
      I155-27 (VA-) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)
      *b

      Front view of wire harness connector

      (to No. 1 Stereo Jack Adapter Assembly)
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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