Click here

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

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

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
Click here

WIRING DIAGRAM

Click here

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).

Click here

PROCEDURE


  1. Click here

    INSPECT TELEMATICS TRANSCEIVER


    1. A000424E01

      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
      Table 2. Text in Illustration
      *a

      Component with harness connected

      (Telematics Transceiver)

  2. Click here

    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

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. Click here

    INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Reconnect the H99 stereo component amplifier assembly connector.

    2. A00056SE01

      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
      Table 3. Text in Illustration
      *a

      Front view of wire harness connector

      (to Telematics Transceiver)

    • OK

      REPLACE TELEMATICS TRANSCEIVER (Click here)

    • NG

      REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY (Click here)