NAVIGATION SYSTEM Microphone Circuit

DESCRIPTION

The radio and display receiver assembly, roof console box sub-assembly and 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 sub-assembly and telephone microphone assembly, and the roof console box sub-assembly and telephone microphone assembly sends microphone signals to the radio and display receiver assembly and navigation ECU.

WIRING DIAGRAM

Figure 1. w/ Sliding Roof

B0070DUE01

Figure 2. w/o Sliding Roof

B006WW1E04

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

  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:


    • A communication malfunction DTC may be stored.

    • The radio and display receiver assembly may not operate normally.

PROCEDURE


  1. CHECK MICROPHONE AND VOICE RECOGNITION (INPUT TO NAVIGATION ECU)


    1. B006ZSC

      Enter the "Microphone Check" screen. Refer to Check Microphone (Input to navigation ECU) in Operation Check.

      Click here

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

      OK
      Check result is normal.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. CHECK MICROPHONE AND VOICE RECOGNITION (INPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. B006ZSC

      Enter the "Microphone Check" screen. Refer to Check Microphone (Input to radio and display receiver assembly) in Operation Check.

      Click here

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

      OK
      Check result is normal.
      Result
      Result Proceed to
      NG (w/ Sliding Roof) A
      NG (w/o Sliding Roof) B
      OK C

    B

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

    C

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU) Click here

    A

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


    1. Disconnect the K2 radio and display receiver assembly connector.

    2. Disconnect the V14 roof console box sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K2-25 (SNS2) - V14-6 (SNS2) Always Below 1 Ω
      K2-23 (MACC) - V14-9 (MACC) Always Below 1 Ω
      K2-21 (MIN+) - V14-8 (MCO+) Always Below 1 Ω
      K2-22 (MIN-) - V14-7 (MCO-) Always Below 1 Ω
      K2-25 (SNS2) or V14-6 (SNS2) - Body ground Always 10 kΩ or higher
      K2-23 (MACC) or V14-9 (MACC) - Body ground Always 10 kΩ or higher
      K2-21 (MIN+) or V14-8 (MCO+) - Body ground Always 10 kΩ or higher
      K2-22 (MIN-) or V14-7 (MCO-) - Body ground Always 10 kΩ or higher
      K2-24 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Connect the K2 radio and display receiver assembly connector.

    2. Connect the V14 roof console box sub-assembly connector.

    3. B0071ETC01
      *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
      K2-23 (MACC) - Body ground Ignition switch 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
      K2-24 (SGND) - Body ground Always Below 1 Ω
      K2-22 (MIN-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  5. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY


    1. Remove the roof console box sub-assembly.

      Click here

    2. Connect the B telephone microphone assembly connector.

    3. B006ZT0C01
      *a

      Component without harness connected

      (Roof Console Box Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (SNS2) - 7 (MCO-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY Click here

    OK

  6. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Connect the K2 radio and display receiver assembly connector.

    2. Connect the V14 roof console box sub-assembly connector.

    3. Turn the ignition switch to ACC.

    4. B006YAHC01
      *a

      Component with harness connected

      (Roof Console Box Sub-assembly)

      Connect an oscilloscope to terminals 8 (MCO+) and 7 (MCO-) of the V14 roof console box sub-assembly connector.

    5. Check the signal waveform according to the condition(s) in the table below.

      Item Condition
      Measurement terminal V14-8 (MCO+) - V14-7 (MCO-)
      Tool setting 50 mV/DIV., 500 ms/DIV.
      Vehicle condition

      1. Turn the ignition switch to ACC.

      2. Sound is input to the roof console box sub-assembly when the user is closer than 125 mm from the roof console box sub-assembly sound holes.
      OK
      The waveform is similar to that shown in the illustration.

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only.

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  7. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY


    1. Remove the roof console box sub-assembly.

      Click here

    2. Disconnect the B telephone microphone assembly connector.

    3. B0070Y8C05
      *a

      Component without harness connected

      (Roof Console Box Sub-assembly (No. 1 Roof Wire Side))
      *b

      Component without harness connected

      (Roof Console Box Sub-assembly (Telephone Microphone Assembly Side))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V14-8 (MCO+) - B-3 Always Below 1 Ω
      V14-7 (MCO-) - B-2 Always Below 1 Ω
      V14-8 (MCO+) or B-3 - V14-15 (GND) Always 10 kΩ or higher
      V14-7 (MCO-) or B-2 - V14-15 (GND) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    NG

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY Click here

  8. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY


    1. Remove the roof console box sub-assembly.

      Click here

    2. Disconnect the B telephone microphone assembly connector.

    3. B0070Y8C06
      *a

      Component without harness connected

      (Roof Console Box Sub-assembly (No. 1 Roof Wire Side))
      *b

      Component without harness connected

      (Roof Console Box Sub-assembly (Telephone Microphone Assembly Side))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V14-6 (SNS2) - B-1 Always Below 1 Ω
      V14-7 (MCO-) - B-2 Always Below 1 Ω
      V14-6 (SNS2) or B-1 - V14-15 (GND) Always 10 kΩ or higher
      V14-7 (MCO-) or B-2 - V14-15 (GND) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    NG

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ROOF CONSOLE BOX SUB-ASSEMBLY)


    1. Disconnect the K2 radio and display receiver assembly connector.

    2. Disconnect the V13 roof console box sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K2-25 (SNS2) - V13-12 (SNS2) Always Below 1 Ω
      K2-23 (MACC) - V13-9 (MACC) Always Below 1 Ω
      K2-21 (MIN+) - V13-10 (MCO+) Always Below 1 Ω
      K2-22 (MIN-) - V13-11 (MCO-) Always Below 1 Ω
      K2-25 (SNS2) or V13-12 (SNS2) - Body ground Always 10 kΩ or higher
      K2-23 (MACC) or V13-9 (MACC) - Body ground Always 10 kΩ or higher
      K2-21 (MIN+) or V13-10 (MCO+) - Body ground Always 10 kΩ or higher
      K2-22 (MIN-) or V13-11 (MCO-) - Body ground Always 10 kΩ or higher
      K2-24 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Connect the K2 radio and display receiver assembly connector.

    2. Connect the V13 roof console box sub-assembly connector.

    3. B0071ETC03
      *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
      K2-23 (MACC) - Body ground Ignition switch 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
      K2-24 (SGND) - Body ground Always Below 1 Ω
      K2-22 (MIN-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  11. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY


    1. Remove the roof console box sub-assembly.

      Click here

    2. Connect the B telephone microphone assembly connector.

    3. B006WZXC01
      *a

      Component without harness connected

      (Roof Console Box Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      12 (SNS2) - 11 (MCO-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY Click here

    OK

  12. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Connect the K2 radio and display receiver assembly connector.

    2. Connect the V13 roof console box sub-assembly connector.

    3. Turn the ignition switch to ACC.

    4. B0070DWC03
      *a

      Component with harness connected

      (Roof Console Box Sub-assembly)

      Connect an oscilloscope to terminals 10 (MCO+) and 11 (MCO-) of the V13 roof console box sub-assembly connector.

    5. Check the signal waveform according to the condition(s) in the table below.

      Item Condition
      Measurement terminal V13-10 (MCO+) - V13-11 (MCO-)
      Tool setting 50 mV/DIV., 500 ms/DIV.
      Vehicle condition

      1. Turn the ignition switch to ACC.

      2. Sound is input to the roof console box sub-assembly when the user is closer than 125 mm from the roof console box sub-assembly sound holes.
      OK
      The waveform is similar to that shown in the illustration.

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only.

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  13. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY


    1. Remove the roof console box sub-assembly.

      Click here

    2. Disconnect the B telephone microphone assembly connector.

    3. B006XVXC11
      *a

      Component without harness connected

      (Roof Console Box Sub-assembly (No. 1 Roof Wire Side))
      *b

      Component without harness connected

      (Roof Console Box Sub-assembly (Telephone Microphone Assembly Side))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V13-10 (MCO+) - B-3 Always Below 1 Ω
      V13-11 (MCO-) - B-2 Always Below 1 Ω
      V13-10 (MCO+) or B-3 - V13-4 (GND) Always 10 kΩ or higher
      V13-11 (MCO-) or B-2 - V13-4 (GND) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    NG

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY Click here

  14. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY


    1. Remove the roof console box sub-assembly.

      Click here

    2. Disconnect the B telephone microphone assembly connector.

    3. B006XVXC12
      *a

      Component without harness connected

      (Roof Console Box Sub-assembly (No. 1 Roof Wire Side))
      *b

      Component without harness connected

      (Roof Console Box Sub-assembly (Telephone Microphone Assembly Side))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V13-12 (SNS2) - B-1 Always Below 1 Ω
      V13-11 (MCO-) - B-2 Always Below 1 Ω
      V13-12 (SNS2) or B-1 - V13-4 (GND) Always 10 kΩ or higher
      V13-11 (MCO-) or B-2 - V13-4 (GND) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    NG

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY Click here

  15. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU)


    1. Disconnect the K1 radio and display receiver assembly connector.

    2. Disconnect the K17 navigation ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-25 (MCO+) - K17-13 (MIC+) Always Below 1 Ω
      K1-26 (MCO-) - K17-14 (MIC-) Always Below 1 Ω
      K1-25 (MCO+) or K17-13 (MIC+) - Body ground Always 10 kΩ or higher
      K1-26 (MCO-) or K17-14 (MIC-) - Body ground Always 10 kΩ or higher
      K1-24 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (OUTPUT TO NAVIGATION ECU)


    1. Disconnect the K17 navigation ECU connector.

    2. Turn the ignition switch to ACC.

    3. B0070NFC01
      *a

      Front view of wire harness connector

      (to Navigation ECU)

      Check the signal waveform according to the condition(s) in the table below.

      Item Condition
      Measurement terminal K17-13 (MIC+) - K17-14 (MIC-)
      Tool setting 50 mV/DIV., 500 ms/DIV.
      Vehicle condition

      1. Turn the ignition switch to ACC.

      2. Sound is input to the roof console box sub-assembly when the user is closer than 125 mm from the roof console box sub-assembly sound holes.
      OK
      The waveform is similar to that shown in the illustration.

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only.

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here