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

DTC Code DTC Name
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

E336503E14

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.

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PROCEDURE

  1. INSPECT TELEMATICS TRANSCEIVER

    1. E259127C34

      *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

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    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. E176650C27

      *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

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    NG

    REPLACE RADIO RECEIVER ASSEMBLY

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