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

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.

WIRING DIAGRAM

A0007ZOE97
*a MUTE
*b Stereo Component Amplifier Assembly
*c 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 Precautions for Navigation System Click here.

PROCEDURE


  1. INSPECT TELEMATICS TRANSCEIVER


    1. A000424E01
      Text in Illustration
      *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
      H101-17 (MUTE) - Body ground

      Power switch on (ACC), audio system is playing

      → Emergency call mode

      Above 3.5 V

      → Below 1 V

    OK

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

    NG

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


    1. Disconnect the H99 stereo component amplifier assembly connector.

    2. Disconnect the H101 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H99-2 (TMUT) - H101-17 (MUTE) Always Below 1 Ω
      H99-2 (TMUT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Reconnect the H99 stereo component amplifier assembly connector.

    2. A00056SE01
      Text in Illustration
      *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
      H101-17 (MUTE) - Body ground Power switch on (ACC) Above 3.5 V

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

    NG

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here