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Microphone Circuit between Microphone and Navigation Receiver Assembly [09/2015 - 08/2019]: Procedure

  1. CHECK MICROPHONE (OPERATION CHECK) 
    1. Enter the "Microphone Check" screen. Refer to Check Microphone in Operation Check.
      GTY434237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Refer to OPERATION CHECK [09/2015 - 12/2017] , or refer to OPERATION CHECK [12/2017 - 08/2019]

    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.

      HINT: 

      • 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

    Result: 

    OK 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    NG 

    See step  2

  2. CHECK MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/o DCM (Telematics Transceiver) A
      w/ DCM (Telematics Transceiver) B

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  3

  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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. INSPECT RADIO RECEIVER ASSEMBLY 
    1. Reconnect the J50 radio receiver assembly connector.
    2. Reconnect the U15 telephone microphone assembly connector.
    3. Measure the voltage according to the value(s) in the table below.
      GTY665325Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Radio Receiver Assembly)

      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

    Result: 

    OK 

    See step  10

    Result: 

    NG 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019] 

  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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) 
    1. Disconnect the J50 radio receiver assembly connector.
    2. Disconnect the J62 DCM (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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - TELEPHONE MICROPHONE ASSEMBLY) 
    1. Disconnect the J62 DCM (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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. INSPECT RADIO RECEIVER ASSEMBLY 
    1. Disconnect the J62 DCM (telematics transceiver) connector.
    2. Reconnect the J50 radio receiver assembly connector.
      GTY665324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Radio Receiver Assembly)
    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

    Result: 

    NG 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  9

  9. INSPECT DCM (TELEMATICS TRANSCEIVER) 
    1. Reconnect the J62 DCM (telematics transceiver) connector.
    2. Measure the voltage according to the value(s) in the table below.
      GTY654901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))

      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

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [09/2015 - 12/2017]  , or refer to  REMOVAL [12/2017 - 08/2019] 

    Result: 

    OK 

    See step  10

  10. INSPECT TELEPHONE MICROPHONE ASSEMBLY 
    1. Remove the telephone microphone assembly.

      Refer to REMOVAL [09/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 12/2017] , or refer to REMOVAL [12/2017 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY669363Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Telephone Microphone Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 (SNS2) - 4 (MCO-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TELEPHONE MICROPHONE ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 12/2017]  , or refer to  REMOVAL [12/2017 - 08/2019] 

    Result: 

    OK 

    See step  11

  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 DCM (telematics transceiver) connector (w/ DCM (Telematics Transceiver)).
    4. Turn the engine switch on (ACC).
    5. Connect an oscilloscope to terminals 2 (MCO+) and 4 (MCO-) of the U15 telephone microphone assembly connector.
      GTY673287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Telephone Microphone Assembly)
    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

    Result: 

    A 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    B 

    REPLACE TELEPHONE MICROPHONE ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 12/2017]  , or refer to  REMOVAL [12/2017 - 08/2019] 

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