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.

The sound signal that has been sent is amplified by the radio and display receiver assembly, and then is sent to the speakers.

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 radio and display receiver assembly or speakers.

WIRING DIAGRAM

A01PIBPE06

CAUTION / NOTICE / HINT

Note

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections.

Click here

PROCEDURE


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


    1. Disconnect the G145 No. 1 stereo jack adapter assembly connector.

    2. Disconnect the G143 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G145-6 (ALO) - G143-28 (VAL+) Always Below 1 Ω
      G145-5 (ARO) - G143-26 (VAR+) Always Below 1 Ω
      G145-7 (ASGN) - G143-27 (VA-) Always Below 1 Ω
      G145-9 (AGND) - G143-11 (AGND) Always Below 1 Ω
      G145-8 (AUXO) - G143-25 (ADPG) Always Below 1 Ω
      G145-6 (ALO) - Body ground Always 10 kΩ or higher
      G145-5 (ARO) - Body ground Always 10 kΩ or higher
      G145-9 (ASGN) - Body ground Always 10 kΩ or higher
      G145-9 (AGND) - Body ground Always 10 kΩ or higher
      G145-8 (AUXO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR