AUDIO AND VISUAL SYSTEM Mute Signal Circuit between Radio Receiver and Television Display Assembly

DESCRIPTION

The television display assembly sends a mute signal to the radio receiver assembly.

The radio receiver assembly controls the volume according to the mute signal from the television display assembly.

The mute signal is sent to reduce noise and popping sounds generated such as when switching modes.

If there is an open in the circuit, noise can be heard from the speakers when changing the sound source.

If there is a short in the circuit, even though the radio receiver assembly is functioning, no sound, or only an extremely faint sound, can be heard.

WIRING DIAGRAM

A01CDARE82

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT RADIO RECEIVER ASSEMBLY


    1. A01CBZRE52
      Text in Illustration
      *a

      Component with harness connected

      (Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F13-6 (MUTE) - Body ground Engine switch on (ACC), RSE system is playing → Changing modes Above 3.5 V → Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEVISION DISPLAY ASSEMBLY) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)


    1. Disconnect the radio receiver assembly and television display assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F13-6 (MUTE) - S6-6 (MUTE) Always Below 1 Ω
      F13-6 (MUTE) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT TELEVISION DISPLAY ASSEMBLY


    1. A01CD1ZE77
      Text in Illustration
      *a

      Component with harness connected

      (Television Display Assembly)

      Reconnect the television display assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      S6-6 (MUTE) - Body ground Engine switch on (ACC) Above 3.5 V

    NG

    REPLACE TELEVISION DISPLAY ASSEMBLY Click here

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here