AUDIO AND VISUAL SYSTEM Sound Quality is Bad in All Modes

WIRING DIAGRAM

A01KFASE01

INSPECTION PROCEDURE

PROCEDURE


  1. ADJUST SOUND QUALITY


    1. Adjust the sound quality.


      1. Operate the radio receiver assembly to adjust the sound quality.

        Standard
        The operation returns to be normal.

    OK

    BAD SOUND QUALITY

    NG

  2. COMPARE IT WITH ANOTHER CAR OF SAME MODEL


    1. Compare it with another vehicle of the same model.


      1. Compare with the vehicle of the same type which does not have a trouble to see if there is any difference in the condition of trouble occurrence.

        Standard
        No difference found.

    OK

    SETTING

    NG

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - SPEAKER)


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO.1 SPEAKER ASSEMBLY


    1. Preparation for Check


      1. Disconnect the connector of the speaker.

    2. Resistance Check


      1. Check the resistance between the terminals of the speaker.

        Standard value
        2-9 Ω

        Note

        The speaker should not be removed for checking.


    NG

    REPLACE FRONT NO.1 SPEAKER ASSEMBLY

    OK

  5. INSPECT RADIO RECEIVER ASSEMBLY (B, ACC, GND)


    1. A01KGPNE01

      Remove radio receiver assembly with connectors still connected.

    2. Check voltage.


      1. Measure voltage between terminal B of radio receiver assembly and body ground.

        Standard
        10 - 14 V

      2. Measure voltage between terminal ACC of radio receiver assembly and body ground when ignition switch is turned to ACC.

        Standard
        10 - 14 V

    3. Check continuity.

    4. Check continuity exists between terminal GND of radio receiver assembly and body ground.

      Standard
      Continuity exists

    OK

    CHECK AND REPLACE RADIO RECEIVER ASSEMBLY

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR