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

DESCRIPTION


  1. w/o Manual (SOS) Switch

    The radio and display receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines. Using this circuit, the radio and display receiver assembly sends power to the telephone microphone assembly, and the telephone microphone assembly sends microphone signals to the radio and display receiver assembly.

  2. w/ Manual (SOS) Switch

    The radio and display receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines. Using this circuit, the telematics transceiver sends power to the telephone microphone assembly, and the telephone microphone assembly sends microphone signals to the radio and display receiver assembly via the telematics transceiver.

WIRING DIAGRAM


  1. w/o Manual (SOS) Switch

    B006OO7E42
    *a (Shielded)
    *b Telephone Microphone Assembly
    *c Radio and Display Receiver Assembly

  2. w/ Manual (SOS) Switch

    B006O9SE01
    *a (Shielded)
    *b Telephone Microphone Assembly
    *c Telematics Transceiver
    *d Radio and Display Receiver Assembly

PROCEDURE


  1. CHECK MICROPHONE (OPERATION CHECK)


    1. B006KLX

      Enter the "Microphone Check" screen. Refer to Check Microphone 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.

      OK
      Check result is normal.
      Result
      Result Proceed to
      OK A
      NG (w/o Manual (SOS) Switch) B
      NG (w/ Manual (SOS) Switch) C

    A

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    C

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the F39 radio and display receiver assembly connector.

    2. Disconnect the S18 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F39-6 (SNS2) - S18-3 (SNS2) Always Below 1 Ω
      F39-4 (MACC) - S18-1 (MACC) Always Below 1 Ω
      F39-5 (MIN+) - S18-2 (MCO+) Always Below 1 Ω
      F39-19 (MIN-) - S18-4 (MCO-) Always Below 1 Ω
      F39-6 (SNS2) - Body ground Always 10 kΩ or higher
      F39-4 (MACC) - Body ground Always 10 kΩ or higher
      F39-5 (MIN+) - Body ground Always 10 kΩ or higher
      F39-19 (MIN-) - Body ground Always 10 kΩ or higher
      F39-18 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Reconnect the F39 radio and display receiver assembly connector.

    2. Reconnect the S18 telephone microphone assembly connector.

    3. B006LDWC06
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F39-4 (MACC) - Body ground Engine 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
      F39-18 (SGND) - Body ground Always Below 1 Ω
      F39-19 (MIN-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  4. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Remove the telephone microphone assembly.

      Click here

    2. Inspect the telephone microphone assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  5. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Reconnect the F39 radio and display receiver assembly connector.

    2. Reconnect the S18 telephone microphone assembly connector.

    3. Turn the engine switch to on (ACC).

    4. B006RB1C02
      *a

      Component with harness connected

      (Telephone Microphone Assembly)

      Connect an oscilloscope to terminals 2 (MCO+) and 4 (MCO-) of the S18 telephone microphone assembly connector.

    5. Check the waveform of the telephone microphone assembly using the oscilloscope.

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the telephone microphone assembly is output. A
      A waveform synchronized with the voice input to the telephone microphone assembly is not output. B

    A

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

    B

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the F39 radio and display receiver assembly connector.

    2. Disconnect the S18 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F39-6 (SNS2) - S18-3 (SNS2) Always Below 1 Ω
      F39-6 (SNS2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the M1 telematics transceiver connector.

    2. Disconnect the S18 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M1-33 (MCVD) - S18-1 (MACC) Always Below 1 Ω
      M1-34 (MCI+) - S18-2 (MCO+) Always Below 1 Ω
      M1-35 (MCI-) - S18-4 (MCO-) Always Below 1 Ω
      M1-33 (MCVD) - Body ground Always 10 kΩ or higher
      M1-34 (MCI+) - Body ground Always 10 kΩ or higher
      M1-35 (MCI-) - Body ground Always 10 kΩ or higher
      M1-32 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Disconnect the F39 radio and display receiver assembly connector.

    2. Disconnect the M1 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F39-5 (MIN+) - M1-18 (MCO+) Always Below 1 Ω
      F39-19 (MIN-) - M1-19 (MCO-) Always Below 1 Ω
      F39-5 (MIN+) - Body ground Always 10 kΩ or higher
      F39-19 (MIN-) - Body ground Always 10 kΩ or higher
      F39-18 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Reconnect the F39 radio and display receiver assembly connector.

    2. Reconnect the M1 telematics transceiver connector.

    3. B006LDWC07
      *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
      F39-18 (SGND) - Body ground Always Below 1 Ω
      F39-19 (MIN-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  10. INSPECT TELEMATICS TRANSCEIVER


    1. Reconnect the S18 telephone microphone assembly connector.

    2. B006OJ6C40
      *a

      Component with harness connected

      (Telematics Transceiver)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      M1-33 (MCVD) - Body ground Engine switch on (ACC) 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M1-32 (SGND) - Body ground Always Below 1 Ω
      M1-35 (MCI-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  11. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Remove the telephone microphone assembly.

      Click here

    2. Inspect the telephone microphone assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  12. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Reconnect the F39 radio and display receiver assembly connector.

    2. Reconnect the S18 telephone microphone assembly connector.

    3. Reconnect the M1 telematics transceiver connector.

    4. Turn the engine switch to on (ACC).

    5. B006RB1C02
      *a

      Component with harness connected

      (Telephone Microphone Assembly)

      Connect an oscilloscope to terminals 2 (MCO+) and 4 (MCO-) of the S18 telephone microphone assembly connector.

    6. Check the waveform of the telephone microphone assembly using the oscilloscope.

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the telephone microphone assembly is output. A
      A waveform synchronized with the voice input to the telephone microphone assembly is not output. B

    A

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

    B

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here