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NAVIGATION SYSTEM Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver

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DTC Code DTC Name
  Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver
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DESCRIPTION

The 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 telematics transceiver.

Table 1. *a MUTE *b Stereo Component Amplifier Assembly *c Telematics Transceiver
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WIRING DIAGRAM

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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 Navigation System.

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PROCEDURE


  1. Click here

    INSPECT TELEMATICS TRANSCEIVER


    1. B0067C2C67
      *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
      O65-17 (MUTE) - Body ground

      Engine switch on (ACC), audio system playing

      → Emergency call mode

      2.0 V or higher

      → Below 1 V
      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the O65 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-2 (TMUT) - O65-17 (MUTE) Always Below 1 Ω
      T20-2 (TMUT) or O65-17 (MUTE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS AND CONNECTOR

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    INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Reconnect the T20 stereo component amplifier assembly connector.

    2. B0065SVC63
      *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 Condition Specified Condition
      O65-17 (MUTE) - Body ground Engine switch on (ACC) 2.0 V or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE TELEMATICS TRANSCEIVERClick here

    • NG

      REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLYClick here