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DTC B1579: Voice Recognition Microphone Disconnected [10/2015 - ]: Procedure

  1. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.
      GTY569816Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      E5-19 (MIN-) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Radio and Display Receiver Assembly)

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  2

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

      Result

      Result Proceed to
      w/ Manual (SOS) Switch A
      w/o Manual (SOS) Switch (w/o Sliding Roof System) B
      w/o Manual (SOS) Switch (w/ Sliding Roof System) C

    Result: 

    B 

    See step  8

    Result: 

    C 

    See step  11

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY)) 
    1. Disconnect the E11 DCM (telematics transceiver) connector.
    2. Disconnect the N2 inner rear view mirror assembly (amplifier microphone assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E11-35 (MCI-) - N2-12 (MIC-) Always Below 1 Ω
      E11-35 (MCI-) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) 
    1. Disconnect the E5 radio and display receiver assembly connector.
    2. Disconnect the E11 DCM (telematics transceiver) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E5-19 (MIN-) - E11-19 (MCO-) Always Below 1 Ω
      E5-19 (MIN-) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY)) 
    1. Disconnect the E5 radio and display receiver assembly connector.
    2. Disconnect the N2 inner rear view mirror assembly (amplifier microphone assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E5-6 (SNS2) - N2-10 (SGND) Always Below 1 Ω
      E5-6 (SNS2) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. INSPECT DCM (TELEMATICS TRANSCEIVER) 
    1. Reconnect the E11 DCM (telematics transceiver) connector.
    2. Reconnect the E5 radio and display receiver assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY607274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      E11-35 (MCI-) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (DCM (Telematics Transceiver))

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER) 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  7

  7. INSPECT INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) 
    1. Remove the inner rear view mirror assembly (amplifier microphone assembly) (Refer to REMOVAL [10/2015 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY601112Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      10 (SGND) - 12 (MIC-) Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Inner Rear View Mirror Assembly (Amplifier Microphone Assembly)

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPLACE INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) 

    (Refer to REMOVAL [10/2015 - ] )

  8. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) 
    1. Disconnect the E5 radio and display receiver assembly connector.
    2. Disconnect the N6 roof console box 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
      E5-6 (SNS2) - N6-15 (SNS2) Always Below 1 Ω
      E5-19 (MIN-) - N6-12 (MCO-) Always Below 1 Ω
      E5-6 (SNS2) - Body ground Always 10 kΩ or higher
      E5-19 (MIN-) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) 
    1. Remove the roof console box assembly (telephone microphone assembly) (Refer to REMOVAL [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY596529Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      15 (SNS2) - 12 (MCO-) Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Roof Console Box Assembly (Telephone Microphone Assembly))

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    See step  10

  10. REPLACE TELEPHONE MICROPHONE ASSEMBLY 
    1. Replace the telephone microphone assembly with a new or known good one (Refer to REMOVAL [10/2015 - ] ).
    2. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    3. Recheck for DTCs and check that no DTCs are output.

      OK

      No DTCs are output.

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE ROOF CONSOLE BOX ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

  11. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY)) 
    1. Disconnect the E5 radio and display receiver assembly connector.
    2. Disconnect the N2*1 or N12*2 inner rear view mirror assembly (amplifier microphone assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E5-6 (SNS2) - N2-10 (SGND)*1 Always Below 1 Ω
      E5-6 (SNS2) - N12-8 (SGND)*2 Always Below 1 Ω
      E5-19 (MIN-) - N2-12 (MIC-)*1 Always Below 1 Ω
      E5-19 (MIN-) - N12-10 (MIC-)*2 Always Below 1 Ω
      E5-6 (SNS2) - Body ground Always 10 kΩ or higher
      E5-19 (MIN-) - Body ground Always 10 kΩ or higher
      • *1: w/o Toyota Safety Sense P
      • *2: w/ Toyota Safety Sense P

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. INSPECT INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) 
    1. Remove the inner rear view mirror assembly (amplifier microphone assembly) (Refer to REMOVAL [10/2015 - ] ).
      GTY555144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/o Toyota Safety Sense P
      *a Component without harness connected
      (Inner Rear View Mirror Assembly (Amplifier Microphone Assembly)
      GTY551591Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *B w/ Toyota Safety Sense P
      *a Component without harness connected
      (Inner Rear View Mirror Assembly (Amplifier Microphone Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      N2-10 (SGND) - N2-12 (MIC-)*1 Always Below 1 Ω
      N12-8 (SGND) - N12-10 (MIC-)*2 Always Below 1 Ω
      • *1: w/o Toyota Safety Sense P
      • *2: w/ Toyota Safety Sense P

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPLACE INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) 

    (Refer to REMOVAL [10/2015 - ] )

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