AUDIO AND VISUAL SYSTEM(w/ Multi-display) Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION


WIRING DIAGRAM

A0004Y9E05
*a (Shielded)
*b Roof Console Box Assembly (Telephone Microphone Assembly)
*c Multi-media Module Receiver Assembly

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 Audio and Visual System Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H97 multi-media module receiver assembly connector.

    2. Disconnect the T11 roof console box assembly (telephone microphone assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H97-29 (MACC) - T11-4 (MACC) Always Below 1 Ω
      H97-27 (MIN+) - T11-3 (MCO+) Always Below 1 Ω
      H97-48 (MIN-) - T11-2 (MCO-) Always Below 1 Ω
      H97-49 (SNS2) - T11-1 (SNS2) Always Below 1 Ω
      H97-29 (MACC) - Body ground Always 10 kΩ or higher
      H97-27 (MIN+) - Body ground Always 10 kΩ or higher
      H97-48 (MIN-) - Body ground Always 10 kΩ or higher
      H97-28 (SGND) - Body ground Always 10 kΩ or higher
      H97-49 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. Reconnect the H97 multi-media module receiver assembly connector.

    2. Reconnect the T11 roof console box assembly (telephone microphone assembly) connector.

    3. A000450E01
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H97-29 (MACC) - Body ground Power switch on (ACC) 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H97-28 (SGND) - Body ground Always Below 1 Ω
      H97-48 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  3. INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Remove the roof console box assembly (telephone microphone assembly) Click here.

    2. A00074HE65
      Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (MCO-) - 1 (SNS2) Always Below 1 Ω

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  4. INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Reconnect the H97 multi-media module receiver assembly connector.

    2. Reconnect the T11 roof console box assembly (telephone microphone assembly) connector.

    3. Turn the power switch on (ACC).

    4. A0005XUE01
      Text in Illustration
      *a

      Component with harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

      Connect an oscilloscope to terminals 3 (MCO+) and 2 (MCO-) of the T11 roof console box assembly connector.

    5. Check the waveform of the roof console box assembly (telephone microphone assembly) using the oscilloscope.

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the roof console box assembly (telephone microphone assembly) is output A
      A waveform synchronized with the voice input to the roof console box assembly (telephone microphone assembly) is not output B

    A

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

    B

  5. REPLACE TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly Click here.

    2. Check if the same malfunction recurs.

      Result
      Result Proceed to

      Malfunction does not recur

      (returns to normal)

      		 A
      Malfunction recurs B

    A

    END

    B

    REPLACE ROOF CONSOLE BOX ASSEMBLY Click here