NAVIGATION SYSTEM Microphone Circuit between Microphone and Navigation Receiver Assembly

DESCRIPTION


WIRING DIAGRAM

A001HNZE03

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. B003VKO

      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. 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. 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. CONFIRM 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 - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) Click here

    A

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


    1. Disconnect the K58 radio receiver assembly connector.

    2. Disconnect the S4 map light 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
      K58-49 (SNS2) - S4-1 (SNS2) Always Below 1 Ω
      K58-29 (MACC) - S4-4 (MACC) Always Below 1 Ω
      K58-27 (MIN+) - S4-3 (MCO+) Always Below 1 Ω
      K58-48 (MIN-) - S4-2 (MCO-) Always Below 1 Ω
      K58-49 (SNS2) - Body ground Always 10 kΩ or higher
      K58-29 (MACC) - Body ground Always 10 kΩ or higher
      K58-27 (MIN+) - Body ground Always 10 kΩ or higher
      K58-48 (MIN-) - Body ground Always 10 kΩ or higher
      K58-28 (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 K58 radio receiver assembly connector.

    2. Reconnect the S4 map light assembly (telephone microphone assembly) connector.

    3. A001HN4C02
      *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
      K58-29 (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
      K58-28 (SGND) - Body ground Always Below 1 Ω
      K58-48 (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 - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the K58 radio receiver assembly connector.

    2. Disconnect the S4 map light 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
      K58-49 (SNS2) - S4-1 (SNS2) Always Below 1 Ω
      K58-49 (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 K58 radio receiver assembly connector.

    2. Disconnect the K66 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K58-27 (MIN+) - K66-18 (MCO+) Always Below 1 Ω
      K58-48 (MIN-) - K66-19 (MCO-) Always Below 1 Ω
      K58-27 (MIN+) - Body ground Always 10 kΩ or higher
      K58-48 (MIN-) - Body ground Always 10 kΩ or higher
      K58-28 (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 - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the K66 telematics transceiver connector.

    2. Disconnect the S4 map light 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
      K66-33 (MCVD) - S4-4 (MACC) Always Below 1 Ω
      K66-34 (MCI+) - S4-3 (MCO+) Always Below 1 Ω
      K66-35 (MCI-) - S4-2 (MCO-) Always Below 1 Ω
      K66-33 (MCVD) - Body ground Always 10 kΩ or higher
      K66-34 (MCI+) - Body ground Always 10 kΩ or higher
      K66-35 (MCI-) - Body ground Always 10 kΩ or higher
      K66-32 (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 K66 telematics transceiver connector.

    2. A001HN4C04
      *a

      Component with harness connected

      (Radio Receiver Assembly)

      Reconnect the K58 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K58-28 (SGND) - Body ground Always Below 1 Ω
      K58-48 (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 K66 telematics transceiver connector.

    2. A001JOAC02
      *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
      K66-33 (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
      K66-35 (MCI-) - Body ground Always Below 1 Ω
      K66-32 (SGND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  10. INSPECT MAP LIGHT ASSEMBLY


    1. Remove the map light assembly (telephone microphone assembly).

      Click here

    2. A001K77C21
      *a

      Component without harness connected

      (Map Light Assembly (Telephone Microphone Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (SNS2) - 2 (MCO-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 12 Click here

    OK

  11. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Reconnect the K58 radio receiver assembly connector.

    2. Reconnect the S4 map light assembly (telephone microphone assembly) connector.

    3. Reconnect the K66 telematics transceiver connector (w/ Telematics Transceiver).

    4. Turn the engine switch on (ACC).

    5. A001KPDC21
      *a

      Component with harness connected

      (Map Light Assembly (Telephone Microphone Assembly))

      Connect an oscilloscope to terminals 3 (MCO+) and 2 (MCO-) of the S4 map light assembly (telephone microphone assembly) connector.

    6. Check the waveform of the map light assembly (telephone microphone assembly) using the oscilloscope.

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the map light assembly (telephone microphone assembly) is output A
      A waveform synchronized with the voice input to the map light assembly (telephone microphone assembly) is not output B

    A

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

    B

  12. 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 MAP LIGHT ASSEMBLY Click here