NAVIGATION SYSTEM Microphone Circuit between Microphone and Navigation Receiver Assembly

DESCRIPTION


WIRING DIAGRAM

A003VGXE23

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. 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 (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H147 multi-media module receiver assembly connector.

    2. Disconnect the T6 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
      H147-29 (MACC) - T6-14 (MACC) Always Below 1 Ω
      H147-27 (MIN+) - T6-13 (MCO+) Always Below 1 Ω
      H147-48 (MIN-) - T6-12 (MCO-) Always Below 1 Ω
      H147-49 (SNS2) - T6-11 (SNS2) Always Below 1 Ω
      H147-29 (MACC) - Body ground Always 10 kΩ or higher
      H147-27 (MIN+) - Body ground Always 10 kΩ or higher
      H147-48 (MIN-) - Body ground Always 10 kΩ or higher
      H147-28 (SGND) - Body ground Always 10 kΩ or higher
      H147-49 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. Reconnect the H147 multi-media module receiver assembly connector.

    2. Reconnect the T6 map light assembly (telephone microphone assembly) connector.

    3. A003YQ5E43
      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
      H147-29 (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
      H147-28 (SGND) - Body ground Always Below 1 Ω
      H147-48 (MIN-) - Body ground Always Below 1 Ω

    5. Proceed to the next step based on the inspection result.

      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H147 multi-media module receiver assembly connector.

    2. Disconnect the T6 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
      H147-49 (SNS2) - T6-11 (SNS2) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Disconnect the H147 multi-media module receiver assembly connector.

    2. Disconnect the H145 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H147-27 (MIN+) - H145-18 (MCO+) Always Below 1 Ω
      H147-48 (MIN-) - H145-19 (MCO-) Always Below 1 Ω
      H147-27 (MIN+) - Body ground Always 10 kΩ or higher
      H147-48 (MIN-) - Body ground Always 10 kΩ or higher
      H147-28 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H145 telematics transceiver connector.

    2. Disconnect the T6 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
      H145-33 (MCVD) - T6-14 (MACC) Always Below 1 Ω
      H145-34 (MCI+) - T6-13 (MCO+) Always Below 1 Ω
      H145-35 (MCI-) - T6-12 (MCO-) Always Below 1 Ω
      H145-33 (MCVD) - Body ground Always 10 kΩ or higher
      H145-34 (MCI+) - Body ground Always 10 kΩ or higher
      H145-35 (MCI-) - Body ground Always 10 kΩ or higher
      H145-32 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. Disconnect the H145 telematics transceiver connector.

    2. A003YQ5E44
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

      Reconnect the H147 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H147-28 (SGND) - Body ground Always Below 1 Ω
      H147-48 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  8. INSPECT TELEMATICS TRANSCEIVER


    1. Reconnect the H145 telematics transceiver connector.

    2. A003V7VE17
      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
      H145-33 (MCVD) - Body ground Power 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
      H145-35 (MCI-) - Body ground Always Below 1 Ω
      H145-32 (SGND) - Body ground Always Below 1 Ω

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  9. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


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

    2. A003ZH9E17
      Text in Illustration
      *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
      12 (MCO-) - 11 (SNS2) Always Below 1 Ω

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  10. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Reconnect the H147 multi-media module receiver assembly connector.

    2. Reconnect the H145 telematics transceiver connector (w/ Telematics Transceiver).

    3. Reconnect the T6 map light assembly (telephone microphone assembly) connector.

    4. Turn the power switch on (ACC).

    5. A003WWBE01
      Text in Illustration
      *a

      Component with harness connected

      (Map Light Assembly (Telephone Microphone Assembly))

      Connect an oscilloscope to terminals 13 (MCO+) and 12 (MCO-) of the T6 map light assembly (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 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

    B

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    A

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

  11. 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

    B

    REPLACE MAP LIGHT ASSEMBLY Click here

    A

    END