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NAVIGATION SYSTEM, Diagnostic DTC:B1579

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DTC Code DTC Name
B1579 Voice Recognition Microphone Disconnected
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DESCRIPTION

The multi-media module receiver assembly and roof console box assembly (telephone microphone assembly) are connected to each other using the microphone connection detection signal lines.

This DTC is stored when a microphone connection detection signal line is disconnected.

DTC No. DTC Detection Condition Trouble Area
B1579 Telephone microphone signal is lost.

  • Roof console box assembly

  • Telephone microphone assembly

  • Telematics transceiver*1

  • Multi-media module receiver assembly

  • Harness or connector

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WIRING DIAGRAM

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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 Precautions for Navigation System (Click here).

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PROCEDURE


  1. Click here

    INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A0007APE01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H97-48 (MIN-) - Body ground Always Below 1 Ω
      Table 1. Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

  2. Click here

    CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Model Proceed to
      w/ Telematics Transceiver A
      w/o Telematics Transceiver B

  3. Click here

    CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H101 telematics transceiver connector.

    2. Disconnect the T11 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
      H101-35 (MCI-) - T11-2 (MCO-) Always Below 1 Ω
      H101-35 (MCI-) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

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


    1. Disconnect the H97 multi-media module receiver assembly connector.

    2. Disconnect the H101 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H97-48 (MIN-) - H101-19 (MCO-) Always Below 1 Ω
      H97-48 (MIN-) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H97 multi-media module receiver assembly connector.

    2. Disconnect the T11 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
      H97-49 (SNS2) - T11-1 (SNS2) Always Below 1 Ω
      H97-49 (SNS2) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    INSPECT TELEMATICS TRANSCEIVER


    1. Reconnect the H101 telematics transceiver connector.

    2. Reconnect the H97 multi-media module receiver assembly connector.

    3. A0003PEE01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H101-35 (MCI-) - Body ground Always Below 1 Ω

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

      Result
      Result Proceed to
      NG A
      OK B
      Table 2. Text in Illustration
      *a

      Component with harness connected

      (Telematics Transceiver)

  7. Click here

    CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H97 multi-media module receiver assembly connector.

    2. Disconnect the T11 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
      H97-48 (MIN-) - T11-2 (MCO-) Always Below 1 Ω
      H97-49 (SNS2) - T11-1 (SNS2) Always Below 1 Ω
      H97-48 (MIN-) - Body ground Always 10 kΩ or higher
      H97-49 (SNS2) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the T11 roof console box assembly (telephone microphone assembly) connector.

    2. A0007RZE02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T11-2 (MCO-) - T11-1 (SNS2) Always Below 1 Ω
      Table 3. Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

  9. Click here

    REPLACE TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly (Click here).

    2. Clear the DTCs (Click here).

    3. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

    • OK

      END

    • NG

      REPLACE ROOF CONSOLE BOX ASSEMBLY (Click here)