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

  • Multi-media module receiver assembly

  • Harness or connector

WIRING DIAGRAM

A0160OTE70

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. A01635JE40
      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
      J137-48 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

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


    1. Disconnect the J137 multi-media module receiver assembly connector.

    2. Disconnect the R5 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
      J137-48 (MIN-) - R5-17 (MCO-) Always Below 1 Ω
      J137-49 (SNS2) - R5-6 (SNS2) Always Below 1 Ω
      J137-48 (MIN-) - Body ground Always 10 kΩ or higher
      J137-49 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


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

    2. A015YLOE03
      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
      17 (MCO-) - 6 (SNS2) Always Below 1 Ω

    NG

    REPLACE TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

  4. 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