NAVIGATION SYSTEM Microphone Circuit between Microphone and Navigation Receiver Assembly

DESCRIPTION


WIRING DIAGRAM


  1. w/ Front Center Speaker

    A01CFYAE02

  2. w/o Front Center Speaker

    A01CFYAE05

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/ Front Center Speaker A
      w/o Front Center Speaker B

    B

    CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the F23 navigation ECU sub-assembly connector.

    2. Disconnect the R22 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F23-29 (MACC) - R22-1 (MACC) Always Below 1 Ω
      F23-27 (MIN+) - R22-2 (MIC+) Always Below 1 Ω
      F23-48 (MIN-) - R22-4 (MIC-) Always Below 1 Ω
      F23-49 (SNS2) - R22-3 (SNSE) Always Below 1 Ω
      F23-29 (MACC) - Body ground Always 10 kΩ or higher
      F23-27 (MIN+) - Body ground Always 10 kΩ or higher
      F23-48 (MIN-) - Body ground Always 10 kΩ or higher
      F23-28 (SGND) - Body ground Always 10 kΩ or higher
      F23-49 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT NAVIGATION ECU SUB-ASSEMBLY


    1. Reconnect the F23 navigation ECU sub-assembly connector.

    2. Reconnect the R22 telephone microphone assembly connector.

    3. A01CFQFE02
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F23-29 (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
      F23-28 (SGND) - Body ground Always Below 1 Ω
      F23-48 (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 TELEPHONE MICROPHONE ASSEMBLY Click here

    A

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the F36 navigation ECU sub-assembly connector.

    2. Disconnect the R22 telephone microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F36-6 (SNS2) - R22-3 (SNSE) Always Below 1 Ω
      F36-4 (MACC) - R22-1 (MACC) Always Below 1 Ω
      F36-5 (MIN+) - R22-2 (MIC+) Always Below 1 Ω
      F36-19 (MIN-) - R22-4 (MIC-) Always Below 1 Ω
      F36-6 (SNS2) - Body ground Always 10 kΩ or higher
      F36-4 (MACC) - Body ground Always 10 kΩ or higher
      F36-5 (MIN+) - Body ground Always 10 kΩ or higher
      F36-19 (MIN-) - Body ground Always 10 kΩ or higher
      F36-18 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT NAVIGATION ECU SUB-ASSEMBLY


    1. Reconnect the F36 navigation ECU sub-assembly connector.

    2. Reconnect the R22 telephone microphone assembly connector.

    3. A01CD1ZE75
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F36-4 (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
      F36-18 (SGND) - Body ground Always Below 1 Ω
      F36-19 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

  6. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Disconnect the R22 telephone microphone assembly connector.

    2. A01CCM6E02
      Text in Illustration
      *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
      R22-3 (SNSE) - R22-4 (MIC-) Always Below 1 Ω

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  7. INSPECT TELEPHONE MICROPHONE ASSEMBLY


    1. Reconnect the F23 navigation ECU sub-assembly connector (w/ Front Center Speaker).

    2. Reconnect the F36 navigation ECU sub-assembly connector (w/o Front Center Speaker).

    3. A01CFLHE01
      Text in Illustration
      *a

      Component with harness connected

      (Telephone Microphone Assembly)

      Reconnect the R22 telephone microphone assembly connector.

    4. Turn the engine switch on (ACC).

    5. Connect an oscilloscope to terminals 2 (MIC+) and 4 (MIC-) of the R22 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

    B

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    A

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here