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

DTC Code DTC Name
Mute Signal Circuit between Radio Receiver and Telematics Transceiver

DESCRIPTION

Telematics transceiver sends a mute signal to the radio and display receiver assembly.

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

WIRING DIAGRAM

E336503E26

CAUTION / NOTICE / HINT

Note:

  • Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections.

    Click here

  • 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. E259127C43

      *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

      M38-17 (MUTE) - Body ground

      Ignition switch ACC

      Audio system playing

      → Emergency call mode

      3.5 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 AND DISPLAY RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)

    1. Disconnect the G141 radio and display receiver assembly connector.

    2. Disconnect the M38 telematics transceiver connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G141-8 (TMUT) - M38-17 (MUTE)

      Always

      Below 1 Ω

      G141-8 (TMUT) or M38-17 (MUTE) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

    1. Reconnect the G141 radio and display receiver assembly connector.

    2. E176650C35

      *a

      Front view of wire harness connector

      (to Telematics Transceiver)

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      M38-17 (MUTE) - Body ground

      Ignition switch ACC

      3.5 V or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE TELEMATICS TRANSCEIVER

    Click here

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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