NAVIGATION SYSTEM (for HDD) Microphone Circuit between Microphone and Navigation Receiver Assembly

DESCRIPTION

This circuit sends a microphone signal from the telephone microphone assembly to the navigation receiver assembly.

It also supplies power from the navigation receiver assembly to the telephone microphone assembly.

WIRING DIAGRAM

A006VWWE02

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. A006V2WE01
      Text in Illustration
      *1

      Component without harness connected

      (Navigation Receiver Assembly)

      Disconnect the D24 navigation receiver assembly connector.

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

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

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      5 (MACC) - Body ground Ignition switch ACC 4.75 to 5.25 V

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - MAP LIGHT)


    1. A006SUPE05

      Disconnect the D24 navigation receiver assembly connector.

    2. A006UA6E11

      Disconnect the K7 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D24-5 (MACC) - K7-12 (MACC) Always Below 1 Ω
      D24-4 (MIN+) - K7-11 (MIC+) Always Below 1 Ω
      D24-13 (MIN-) - K7-10 (MIC-) Always Below 1 Ω
      D24-3 (SNS2) - K7-3 (SNS2) Always Below 1 Ω
      D24-5 (MACC) - Body ground Always 10 kΩ or higher
      D24-4 (MIN+) - Body ground Always 10 kΩ or higher
      D24-13 (MIN-) - Body ground Always 10 kΩ or higher
      D24-3 (SNS2) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Navigation Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Map Light Assembly)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE TELEPHONE MICROPHONE WITH ANOTHER AND CHECK


    1. Replace the telephone microphone with a normal one Click here.

    2. Check if the same problem occurs again.

      Result
      Result Proceed to
      Malfunction disappears A
      Malfunction does not disappear (for Sedan) B
      Malfunction does not disappear (for Wagon) C

    B

    REPLACE MAP LIGHT ASSEMBLY Click here

    C

    REPLACE MAP LIGHT ASSEMBLY Click here

    A

    END (TELEPHONE MICROPHONE IS FAULTY)