NAVIGATION SYSTEM (for Radio and Display Type) Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION

w/o Manual (SOS) Switch:

The radio and display receiver assembly and roof console box assembly (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 roof console box assembly (telephone microphone assembly), and the roof console box assembly (telephone microphone assembly) sends microphone signals to the radio and display receiver assembly.

w/ Manual (SOS) Switch:

The radio and display receiver assembly and roof console box assembly (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 roof console box assembly (telephone microphone assembly), and the roof console box assembly (telephone microphone assembly) sends microphone signals to the radio and display receiver assembly via the telematics transceiver.

WIRING DIAGRAM

B000JAUE30

INSPECTION PROCEDURE

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 Navigation System Click here.

PROCEDURE


  1. CHECK MICROPHONE (OPERATION CHECK)


    1. B000IX2

      Enter the "Microphone Check" screen.

      Refer to Check Microphone in Operation Check Click here.

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

      OK
      Check result is normal.

    NG

    CONFIRM MODEL Click here

    OK

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

  2. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Model Proceed to
      w/o Manual (SOS) Switch A
      w/ Manual (SOS) Switch B

    B

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

    A

  3. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the I155 radio and display receiver assembly connector.

    2. Disconnect the S7 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
      I155-4 (MACC) - S7-14 (MACC) Always Below 1 Ω
      I155-5 (MIN+) - S7-13 (MCO+) Always Below 1 Ω
      I155-19 (MIN-) - S7-12 (MCO-) Always Below 1 Ω
      I155-6 (SNS2) - S7-15 (SNS2) Always Below 1 Ω
      I155-4 (MACC) or S7-14 (MACC) - Body ground Always 10 kΩ or higher
      I155-5 (MIN+) or S7-13 (MCO+) - Body ground Always 10 kΩ or higher
      I155-19 (MIN-) or S7-12 (MCO-) - Body ground Always 10 kΩ or higher
      I155-18 (SGND) - Body ground Always 10 kΩ or higher
      I155-6 (SNS2) or S7-15 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. B000HFKE22
      Text in Illustration
      *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 Condition Specified Condition
      I155-4 (MACC) - Body ground Ignition switch ACC 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I155-18 (SGND) - Body ground Always Below 1 Ω
      I155-19 (MIN-) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the I155 radio and display receiver assembly connector.

    2. Disconnect the S7 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
      I155-6 (SNS2) - S7-15 (SNS2) Always Below 1 Ω
      I155-6 (SNS2) or S7-15 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the I155 radio and display receiver assembly connector.

    2. Disconnect the I218 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I155-5 (MIN+) - I218-18 (MCO+) Always Below 1 Ω
      I155-19 (MIN-) - I218-19 (MCO-) Always Below 1 Ω
      I155-5 (MIN+) or I218-18 (MCO+) - Body ground Always 10 kΩ or higher
      I155-19 (MIN-) or I218-19 (MCO-) - Body ground Always 10 kΩ or higher
      I155-18 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the I218 telematics transceiver connector.

    2. Disconnect the S7 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
      I218-33 (MCVD) - S7-14 (MACC) Always Below 1 Ω
      I218-34 (MCI+) - S7-13 (MCO+) Always Below 1 Ω
      I218-35 (MCI-) - S7-12 (MCO-) Always Below 1 Ω
      I218-33 (MCVD) or S7-14 (MACC) - Body ground Always 10 kΩ or higher
      I218-34 (MCI+) or S7-13 (MCO+) - Body ground Always 10 kΩ or higher
      I218-35 (MCI-) or S7-12 (MCO-) - Body ground Always 10 kΩ or higher
      I218-32 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. B000HFKE23
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

      Disconnect the I218 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I155-18 (SGND) - Body ground Always Below 1 Ω
      I155-19 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  9. INSPECT TELEMATICS TRANSCEIVER


    1. B000HFUE04
      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
      I218-33 (MCVD) - Body ground Ignition switch ACC 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I218-35 (MCI-) - Body ground Always Below 1 Ω
      I218-32 (SGND) - Body ground Always Below 1 Ω

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

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


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

    2. B000J0CE59
      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
      15 (SNS2) - 12 (MCO-) Always Below 1 Ω

    NG

    REPLACE ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    OK

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


    1. Turn the ignition switch to ACC.

    2. B000JQ4E58
      Text in Illustration
      *a

      Component with harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

      Connect an oscilloscope to terminals 13 (MCO+) and 12 (MCO-) of the S7 roof console box assembly (telephone microphone assembly) connector.

    3. 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

    B

    REPLACE ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

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