NAVIGATION SYSTEM, Diagnostic DTC:B1579

DTC Code DTC Name
B1579 Voice Recognition Microphone Disconnected

DESCRIPTION

The multi-media module receiver assembly and map light 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.

  • Map light assembly

  • Telephone microphone assembly

  • Telematics transceiver*1

  • Multi-media module receiver assembly

  • Harness or connector

WIRING DIAGRAM

A003YM6E17

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. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A003YQ5E42
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H147-48 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  2. CONFIRM MODEL


    1. Choose the model to be inspected.

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

    B

    CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H145 telematics transceiver connector.

    2. Disconnect the T6 map light 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
      H145-35 (MCI-) - T6-12 (MCO-) Always Below 1 Ω
      H145-35 (MCI-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H147 multi-media module receiver assembly connector.

    2. Disconnect the H145 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H147-48 (MIN-) - H145-19 (MCO-) Always Below 1 Ω
      H147-48 (MIN-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H147 multi-media module receiver assembly connector.

    2. Disconnect the T6 map light 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
      H147-49 (SNS2) - T6-11 (SNS2) Always Below 1 Ω
      H147-49 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT TELEMATICS TRANSCEIVER


    1. Reconnect the H145 telematics transceiver connector.

    2. Reconnect the H147 multi-media module receiver assembly connector.

    3. A003V7VE16
      Text in Illustration
      *a

      Component with harness connected

      (Telematics Transceiver)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H145-35 (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

    B

    INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

    REPLACE TELEMATICS TRANSCEIVER Click here

  7. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the H147 multi-media module receiver assembly connector.

    2. Disconnect the T6 map light 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
      H147-48 (MIN-) - T6-12 (MCO-) Always Below 1 Ω
      H147-49 (SNS2) - T6-11 (SNS2) Always Below 1 Ω
      H147-48 (MIN-) - Body ground Always 10 kΩ or higher
      H147-49 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Remove the map light assembly (telephone microphone assembly).

    2. A003ZH9E17
      Text in Illustration
      *a

      Component without harness connected

      (Map Light Assembly (Telephone Microphone Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      12 (MCO-) - 11 (SNS2) Always Below 1 Ω

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

  9. 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.

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

    END