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

DESCRIPTION


WIRING DIAGRAM

A01HO8RE05

INSPECTION PROCEDURE

Note

After replacing the navigation ECU sub-assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Model Proceed to
      w/o Manual (SOS) switch A
      w/ Manual (SOS) switch B

    B

    CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the navigation ECU sub-assembly connector.

    2. Disconnect the 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
      I67-4 (MACC) - S12-14 (MACC) Always Below 1 Ω
      I67-5 (MIN+) - S12-13 (MCO+) Always Below 1 Ω
      I67-19 (MIN-) - S12-12 (MCO-) Always Below 1 Ω
      I67-6 (SNS2) - S12-15 (SNS2) Always Below 1 Ω
      I67-4 (MACC) - Body ground Always 10 kΩ or higher
      I67-5 (MIN+) - Body ground Always 10 kΩ or higher
      I67-19 (MIN-) - Body ground Always 10 kΩ or higher
      I67-18 (SGND) - Body ground Always 10 kΩ or higher
      I67-6 (SNS2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT NAVIGATION ECU SUB-ASSEMBLY


    1. Reconnect the navigation ECU sub-assembly connector.

    2. Reconnect the roof console box assembly (telephone microphone assembly) connector.

    3. A01HOYNE56
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      I67-4 (MACC) - Body ground Ignition switch ACC 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I67-18 (SGND) - Body ground Always Below 1 Ω
      I67-19 (MIN-) - Body ground Always Below 1 Ω

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

      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the navigation ECU sub-assembly connector.

    2. Disconnect the 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
      I67-6 (SNS2) - S12-15 (SNS2) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - DCM (TELEMATICS TRANSCEIVER))


    1. Disconnect the navigation ECU sub-assembly connector.

    2. Disconnect the DCM (telematics transceiver) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I67-5 (MIN+) - I135-18 (MCO+) Always Below 1 Ω
      I67-19 (MIN-) - I135-19 (MCO-) Always Below 1 Ω
      I67-5 (MIN+) - Body ground Always 10 kΩ or higher
      I67-19 (MIN-) - Body ground Always 10 kΩ or higher
      I67-18 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the DCM (telematics transceiver) connector.

    2. Disconnect the 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
      I135-33 (MCVD) - S12-14 (MACC) Always Below 1 Ω
      I135-34 (MCI+) - S12-13 (MCO+) Always Below 1 Ω
      I135-35 (MCI-) - S12-12 (MCO-) Always Below 1 Ω
      I135-33 (MCVD) - Body ground Always 10 kΩ or higher
      I135-34 (MCI+) - Body ground Always 10 kΩ or higher
      I135-35 (MCI-) - Body ground Always 10 kΩ or higher
      I135-32 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT NAVIGATION ECU SUB-ASSEMBLY


    1. Disconnect the DCM (telematics transceiver) connector.

    2. A01HOYNE87
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

      Reconnect the navigation ECU sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I67-18 (SGND) - Body ground Always Below 1 Ω
      I67-19 (MIN-) - Body ground Always Below 1 Ω

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

  8. INSPECT DCM (TELEMATICS TRANSCEIVER)


    1. Reconnect the DCM (telematics transceiver) connector.

    2. A01HPPDE57
      Text in Illustration
      *a

      Component with harness connected

      (DCM (Telematics Transceiver))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      I135-33 (MCVD) - Body ground Ignition switch ACC 4 to 6 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I135-35 (MCI-) - Body ground Always Below 1 Ω
      I135-32 (SGND) - Body ground Always Below 1 Ω

    NG

    REPLACE DCM (TELEMATICS TRANSCEIVER) Click here

    OK

  9. INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


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

    2. A01HPUQE20
      Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S12-15 (SNS2) - S12-12 (MCO-) Always Below 1 Ω

    NG

    REPLACE ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    OK

  10. INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. Reconnect the navigation ECU sub-assembly connector.

    2. Reconnect the DCM (telematics transceiver) connector (w/ Manual (SOS) Switch).

    3. A01HNJ0E18
      Text in Illustration
      *a

      Component with harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

      Reconnect the roof console box assembly (telephone microphone assembly) connector.

    4. Turn the ignition switch to ACC.

    5. Connect an oscilloscope to terminals 13 (MCO+) and 12 (MCO-) of the roof console box assembly (telephone microphone assembly) connector.

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

      Result
      Result Proceed to
      A waveform synchronized with the voice input to the roof console box assembly (telephone microphone assembly) is output A
      A waveform synchronized with the voice input to the roof console box assembly (telephone microphone assembly) is not output B

    B

    REPLACE ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    A

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