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

A01NMVQE72

INSPECTION PROCEDURE

Note


    w/ G-BOOK System:

  • When replacing the multi-media module receiver assembly or telematics transceiver, perform vehicle contract setting (w/ Telematics Transceiver) Click here.

  • When replacing the multi-media module receiver assembly, perform vehicle contract setting (w/o Telematics Transceiver) Click here.

PROCEDURE


  1. INSPECT TELEMATICS TRANSCEIVER


    1. A01NMJLE86
      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
      G25-17 (MUTE) - Body ground

      Power switch on (ACC), audio system is playing

      → Emergency call mode

      Above 3.5 V

      → Below 1 V

    NG

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

    OK

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

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


    1. Disconnect the O42 stereo component amplifier assembly connector.

    2. Disconnect the G25 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O42-2 (TMUT) - G25-17 (MUTE) Always Below 1 Ω
      O42-2 (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 O42 stereo component amplifier assembly connector.

    2. A01NJYNE26
      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
      G25-17 (MUTE) - Body ground Power switch on (ACC) Above 3.5 V

    NG

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here