AUDIO AND VISUAL SYSTEM (for Radio and Display Type) Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION

Microphone signal from the telephone microphone assembly is sent to the radio and display receiver assembly. Also, power is supplied from the radio and display receiver assembly to the telephone microphone assembly.

WIRING DIAGRAM

A01DZ19E06

INSPECTION PROCEDURE

Tech Tips

When replacing the radio and display receiver assembly, it is necessary to perform the vehicle contract setting for T-Connect.

PROCEDURE


  1. CHECK TELEPHONE MICROPHONE ASSEMBLY (OPERATION CHECK)


    1. A01DYLZ

      Enter the "Microphone Check" screen. [Refer to Microphone and Voice Recognition Check in Operation Check Click here]

    2. When a voice is input into the microphone, check that the microphone input level meter changes according to the input voice.

    3. Push the recording switch and perform voice recording.

      Tech Tips


      • Select the recording switch with the blower motor of the air conditioning system stopped. If an outlet of the air conditioning system is facing the microphone, noise may be recorded.

      • Voice can be recorded for up to 5 seconds.

    4. w/ Recording Function:

      Check that the recording indicator remains on while recording and that the recorded voice is played normally without noise or distortion.

      OK
      All check results are normal.

    NG

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY) Click here

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY)


    1. Disconnect the R21 radio and display receiver assembly connector.

    2. Disconnect the M6*1 or M8*2 map light assembly connector.


      • *1: except Australia

      • *2: for Australia

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

      Standard Resistance
      for Australia
      Tester Connection Condition Specified Condition
      R21-4 (MACC) - M8-1 (MACC) Always Below 1 Ω
      R21-5 (MIN+) - M8-2 (MCO+)
      R21-19 (MIN-) - M8-4 (MCO-)
      R21-6 (SNS2) - Body ground
      R21-4 (MACC) - Body ground Always 10 kΩ or higher
      R21-5 (MIN+) - Body ground
      R21-19 (MIN-) - Body ground
      R21-18 (SGND) - Body ground
      except Australia
      Tester Connection Condition Specified Condition
      R21-4 (MACC) - M6-4 (MACC) Always Below 1 Ω
      R21-5 (MIN+) - M6-3 (MCO+)
      R21-19 (MIN-) - M6-2 (MCO-)
      R21-6 (SNS2) - Body ground
      R21-4 (MACC) - Body ground Always 10 kΩ or higher
      R21-5 (MIN+) - Body ground
      R21-19 (MIN-) - Body ground
      R21-18 (SGND) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A01E0GGE05
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R21-18 (SGND) - Body ground Always Below 1 Ω
      R21-19 (MIN-) - Body ground

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R21-4 (MACC) - Body ground Ignition switch ACC 4 to 6 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  4. CHECK TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly with a known good one Click here.

    2. Check that the malfunction disappears.

      OK
      Malfunction disappears.

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

    END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE)