AUDIO AND VISUAL SYSTEM Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver

DESCRIPTION

The DCM (telematics transceiver) sends a mute signal to the stereo component amplifier assembly.

The stereo component amplifier assembly controls the volume according to the mute signal from the DCM (telematics transceiver).

WIRING DIAGRAM

A01FGTGE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DCM (TELEMATICS TRANSCEIVER)


    1. A01FENSE19
      Text in Illustration
      *a

      Component with harness connected

      (DCM [Telematics Transceiver])

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      N86-9 (MUTE) - Body ground

      Engine switch on (ACC), audio system is playing

      → Emergency call mode

      Above 3.5 V

      → Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM [TELEMATICS TRANSCEIVER]) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM [TELEMATICS TRANSCEIVER])


    1. Disconnect the T40 stereo component amplifier assembly connector.

    2. Disconnect the N86 DCM (telematics transceiver) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T40-2 (TMUT) - N86-9 (MUTE) Always Below 1 Ω
      T40-2 (TMUT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Reconnect the stereo component amplifier assembly connector.

    2. A01FHWNE08
      Text in Illustration
      *a

      Front view of wire harness connector

      (to DCM [Telematics Transceiver])

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N86-9 (MUTE) - Body ground Engine switch on (ACC) Above 3.5 V

    NG

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    OK

    REPLACE DCM (TELEMATICS TRANSCEIVER) Click here