AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Mute Signal Circuit between Radio Receiver and Telematics Transceiver

DESCRIPTION

The telematics transceiver sends a mute signal to the radio receiver assembly.

The radio receiver assembly controls the volume according to the mute signal from the telematics transceiver.

WIRING DIAGRAM

A01TD4DE14
*1 MUTE
*2 Radio Receiver Assembly
*3 Telematics Transceiver

CAUTION / NOTICE / HINT

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

Click here

PROCEDURE


  1. INSPECT TELEMATICS TRANSCEIVER


    1. A01TC28C34
      *a

      Component with harness connected

      (Telematics Transceiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E143-17 (MUTE) - Body ground

      Ignition switch ACC

      Audio system playing

      → Emergency call mode

      2.0 V or higher

      → Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Disconnect the E109 radio receiver assembly connector.

    2. Disconnect the E143 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E109-8 (TMUT) - E143-17 (MUTE) Always Below 1 Ω
      E109-8 (TMUT) or E143-17 (MUTE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT RADIO RECEIVER ASSEMBLY


    1. Reconnect the E109 radio receiver assembly connector.

    2. A01TCCIC27
      *a

      Front view of wire harness connector

      (Telematics Transceiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E143-17 (MUTE) - Body ground Ignition switch ACC 2.0 V or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here