NAVIGATION SYSTEM Microphone Circuit between Microphone and Navigation Receiver Assembly

DESCRIPTION


WIRING DIAGRAM

B005NYYE28

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 Navigation System.

Click here

PROCEDURE


  1. CHECK MICROPHONE (OPERATION CHECK)


    1. B005LVX

      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.

    3. Select 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. 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.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

  2. CHECK MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/o Telematics Transceiver A
      w/ Telematics Transceiver B

    B

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

    A

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


    1. Disconnect the J50 radio receiver assembly connector.

    2. Disconnect the U15 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J50-49 (SNS2) - U15-3 (SNS2) Always Below 1 Ω
      J50-29 (MACC) - U15-1 (MACC) Always Below 1 Ω
      J50-27 (MIN+) - U15-2 (MCO+) Always Below 1 Ω
      J50-48 (MIN-) - U15-4 (MCO-) Always Below 1 Ω
      J50-49 (SNS2) or U15-3 (SNS2) - Body ground Always 10 kΩ or higher
      J50-29 (MACC) or U15-1 (MACC) - Body ground Always 10 kΩ or higher
      J50-27 (MIN+) or U15-2 (MCO+) - Body ground Always 10 kΩ or higher
      J50-48 (MIN-) or U15-4 (MCO-) - Body ground Always 10 kΩ or higher
      J50-28 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT RADIO RECEIVER ASSEMBLY


    1. Reconnect the J50 radio receiver assembly connector.

    2. Reconnect the U15 telephone microphone assembly connector.

    3. B005QA0C34
      *a

      Component with harness connected

      (Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J50-29 (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
      J50-28 (SGND) - Body ground Always Below 1 Ω
      J50-48 (MIN-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 10 Click here

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

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


    1. Disconnect the J50 radio receiver assembly connector.

    2. Disconnect the U15 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J50-49 (SNS2) - U15-3 (SNS2) Always Below 1 Ω
      J50-49 (SNS2) or U15-3 (SNS2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the J50 radio receiver assembly connector.

    2. Disconnect the J62 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J50-27 (MIN+) - J62-18 (MCO+) Always Below 1 Ω
      J50-48 (MIN-) - J62-19 (MCO-) Always Below 1 Ω
      J50-27 (MIN+) or J62-18 (MCO+) - Body ground Always 10 kΩ or higher
      J50-48 (MIN-) or J62-19 (MCO-) - Body ground Always 10 kΩ or higher
      J50-28 (SGND) - 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 J62 telematics transceiver connector.

    2. Disconnect the U15 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J62-33 (MCVD) - U15-1 (MACC) Always Below 1 Ω
      J62-34 (MCI+) - U15-2 (MCO+) Always Below 1 Ω
      J62-35 (MCI-) - U15-4 (MCO-) Always Below 1 Ω
      J62-33 (MCVD) or U15-1 (MACC) - Body ground Always 10 kΩ or higher
      J62-34 (MCI+) or U15-2 (MCO+) - Body ground Always 10 kΩ or higher
      J62-35 (MCI-) or U15-4 (MCO-) - Body ground Always 10 kΩ or higher
      J62-32 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT RADIO RECEIVER ASSEMBLY


    1. Disconnect the J62 telematics transceiver connector.

    2. B005QA0C35
      *a

      Component with harness connected

      (Radio Receiver Assembly)

      Reconnect the J50 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J50-28 (SGND) - Body ground Always Below 1 Ω
      J50-48 (MIN-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

  9. INSPECT TELEMATICS TRANSCEIVER


    1. Reconnect the J62 telematics transceiver connector.

    2. B005NRBC28
      *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
      J62-33 (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
      J62-35 (MCI-) - Body ground Always Below 1 Ω
      J62-32 (SGND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  10. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Remove the telephone microphone assembly.

      Click here

    2. B005ODSC04
      *a

      Component without harness connected

      (Telephone Microphone Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (SNS2) - 4 (MCO-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  11. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Reconnect the J50 radio receiver assembly connector.

    2. Reconnect the U15 telephone microphone assembly connector.

    3. Reconnect the J62 telematics transceiver connector (w/ Telematics Transceiver).

    4. Turn the engine switch on (ACC).

    5. B005Q7IC08
      *a

      Component with harness connected

      (Telephone Microphone Assembly)

      Connect an oscilloscope to terminals 2 (MCO+) and 4 (MCO-) of the U15 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

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    B

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here