NAVIGATION SYSTEM Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DTC Code DTC Name
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

E289276E06

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