NAVIGATION SYSTEM Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION


WIRING DIAGRAM

A01FFFCE17

INSPECTION PROCEDURE

Tech Tips

When replacing the multi-media module receiver assembly or the telematics transceiver, perform the vehicle contract setting.


PROCEDURE


  1. CONFIRM MODEL


    1. Check the model to be inspected.

      Result
      Model Proceed to
      w/o Emergency Call Switch A
      w/ Emergency Call Switch B

    B

    Click here

    A

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


    1. Disconnect the N162 multi-media module receiver assembly connector.

    2. Disconnect the Y11 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N162-27 (MIN+) - Y11-3 (MCO+) Always Below 1 Ω
      N162-48 (MIN-) - Y11-2 (MCO-) Always Below 1 Ω
      N162-29 (MACC) - Y11-4 (MACC) Always Below 1 Ω
      N162-49 (SNS2) - Y11-1 (SNS2) Always Below 1 Ω
      N162-27 (MIN+) - Body ground Always 10 kΩ or higher
      N162-48 (MIN-) - Body ground Always 10 kΩ or higher
      N162-28 (SGND) - Body ground Always 10 kΩ or higher
      N162-49 (SNS2) - Body ground Always 10 kΩ or higher
      N162-29 (MACC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A01FFL7E59
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N162-29 (MACC) - Body ground Engine switch on (ACC) 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N162-28 (SGND) - Body ground Always Below 1 Ω
      N162-48 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  4. INSPECT MAP LIGHT ASSEMBLY


    1. A01FFBVE04

      Remove the map light assembly Click here.

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

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

    NG

    CHECK TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  5. CHECK MAP LIGHT ASSEMBLY


    1. A01FIAXE02
      Text in Illustration
      *a

      Component with harness connected

      (Map Light Assembly)

      Turn the engine switch on (ACC).

    2. Connect an oscilloscope to terminals Y11-3 (MCO+) and Y11-2 (MCO-) of the map light assembly connector.

    3. Check the waveform of the telephone microphone assembly using the oscilloscope.

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the map light assembly is output. A
      A waveform synchronized with the voice input to the map light assembly is not output. B

    B

    CHECK TELEPHONE MICROPHONE ASSEMBLY Click here

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  6. CHECK TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly with a new or normally functioning one Click here.

    2. Check if the same malfunction recurs.

      Result
      Result Proceed to

      Malfunction does not recur

      (returns to normal).

      		 A
      Malfunction recurs. B

    B

    REPLACE MAP LIGHT ASSEMBLY Click here

    A

    END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE)

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


    1. Disconnect the N162 multi-media module receiver assembly connector.

    2. Disconnect the Y11 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N162-27 (MIN+) - Y11-3 (MCO+) Always Below 1 Ω
      N162-48 (MIN-) - Y11-2 (MCO-) Always Below 1 Ω
      N162-29 (MACC) - Y11-4 (MACC) Always Below 1 Ω
      N162-49 (SNS2) - Y11-1 (SNS2) Always Below 1 Ω
      N162-27 (MIN+) - Body ground Always 10 kΩ or higher
      N162-48 (MIN-) - Body ground Always 10 kΩ or higher
      N162-28 (SGND) - Body ground Always 10 kΩ or higher
      N162-49 (SNS2) - Body ground Always 10 kΩ or higher
      N162-29 (MACC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the N162 multi-media module receiver assembly connector.

    2. Disconnect the N86 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N162-27 (MIN+) - N86-7 (MCO+) Always Below 1 Ω
      N162-48 (MIN-) - N86-8 (MCO-) Always Below 1 Ω
      N162-27 (MIN+) - Body ground Always 10 kΩ or higher
      N162-48 (MIN-) - Body ground Always 10 kΩ or higher
      N162-28 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY)


    1. Disconnect the N86 telematics transceiver connector.

    2. Disconnect the Y11 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N86-20 (MCVD) - Y11-4 (MACC) Always Below 1 Ω
      N86-6 (MCI+) - Y11-3 (MCO+) Always Below 1 Ω
      N86-5 (MCI-) - Y11-2 (MCO-) Always Below 1 Ω
      N86-20 (MCVD) - Body ground Always 10 kΩ or higher
      N86-6 (MCI+) - Body ground Always 10 kΩ or higher
      N86-5 (MCI-) - Body ground Always 10 kΩ or higher
      N86-21 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A01FFL7E61
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

      Disconnect the N86 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N162-28 (SGND) - Body ground Always Below 1 Ω
      N162-48 (MIN-) - Body ground Always Below 1 Ω

    NG

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    OK

  11. CHECK TELEMATICS TRANSCEIVER


    1. A01FENSE18
      Text in Illustration
      *a

      Component with harness connected

      (Telematics Transceiver)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N86-20 (MCVD) - Body ground Engine switch on (ACC) 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N86-21 (SGND) - Body ground Always Below 1 Ω
      N86-5 (MCI-) - Body ground Always Below 1 Ω

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  12. INSPECT MAP LIGHT ASSEMBLY


    1. A01FFBVE04

      Remove the map light assembly Click here.

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

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

    NG

    CHECK TELEPHONE MICROPHONE ASSEMBLY Click here

    OK

  13. CHECK MAP LIGHT ASSEMBLY


    1. A01FIAXE02
      Text in Illustration
      *a

      Component with harness connected

      (Map Light Assembly)

      Turn the engine switch on (ACC).

    2. Connect an oscilloscope to terminals Y11-3 (MCO+) and Y11-2 (MCO-) of the map light assembly connector.

    3. Check the waveform of the telephone microphone assembly using the oscilloscope.

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the map light assembly is output. A
      A waveform synchronized with the voice input to the map light assembly is not output. B

    B

    CHECK TELEPHONE MICROPHONE ASSEMBLY Click here

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  14. CHECK TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly with a new or normally functioning one Click here.

    2. Check if the same malfunction recurs.

      Result
      Result Proceed to

      Malfunction does not recur

      (returns to normal).

      		 A
      Malfunction recurs. B

    B

    REPLACE MAP LIGHT ASSEMBLY Click here

    A

    END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE)