AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION



WIRING DIAGRAM

A01V8O1E02

CAUTION / NOTICE / HINT

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 Audio and Visual System.

Click here

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

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

    B

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY) Click here

    A

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


    1. Disconnect the G48 radio receiver assembly connector.

    2. Disconnect the Q16 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
      G48-6 (SNS2) - Q16-5 (SNS2) Always Below 1 Ω
      G48-4 (MACC) - Q16-3 (MACC) Always Below 1 Ω
      G48-5 (MIN+) - Q16-4 (MCO+) Always Below 1 Ω
      G48-19 (MIN-) - Q16-6 (MCO-) Always Below 1 Ω
      G48-6 (SNS2) - Body ground Always 10 kΩ or higher
      G48-4 (MACC) - Body ground Always 10 kΩ or higher
      G48-5 (MIN+) - Body ground Always 10 kΩ or higher
      G48-19 (MIN-) - Body ground Always 10 kΩ or higher
      G48-18 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT MAP LIGHT ASSEMBLY


    1. A01VAQAN01

      Remove the map light assembly.

      Click here

    2. Remove the telephone microphone assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-3 (MACC) - B-5 (MACC) Always Below 1 Ω
      A-4 (MCO+) - B-3 (MIC+) Always Below 1 Ω
      A-5 (SNS2) - B-1 (SNS2) Always Below 1 Ω
      A-6 (MCO-) - B-2 (MIC-) Always Below 1 Ω
      A-3 (MACC) - A-4 (MCO+) Always 10 kΩ or higher
      A-3 (MACC) - A-5 (SNS2) Always 10 kΩ or higher
      A-3 (MACC) - A-6 (MCO-) Always 10 kΩ or higher
      A-4 (MCO+) - A-5 (SNS2) Always 10 kΩ or higher
      A-4 (MCO+) - A-6 (MCO-) Always 10 kΩ or higher
      A-5 (SNS2) - A-6 (MCO-) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

  4. CHECK TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly with a new or known good one and check that the malfunction disappears.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY)


    1. Disconnect the G48 radio receiver assembly connector.

    2. Disconnect the Q16 map light assembly (telephone micro phone assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G48-6 (SNS2) - Q16-5 (SNS2) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Disconnect the G48 radio receiver assembly connector.

    2. Disconnect the M38 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G48-5 (MIN+) - M38-18 (MCO+) Always Below 1 Ω
      G48-19 (MIN-) - M38-19 (MCO-) Always Below 1 Ω
      G48-5 (MIN+) - Body ground Always 10 kΩ or higher
      G48-19 (MIN-) - Body ground Always 10 kΩ or higher
      G48-18 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the M38 telematics transceiver connector.

    2. Disconnect the Q16 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M38-33 (MCVD) - Q16-3 (MACC) Always Below 1 Ω
      M38-34 (MCI+) - Q16-4 (MCO+) Always Below 1 Ω
      M38-35 (MCI-) - Q16-6 (MCO-) Always Below 1 Ω
      M38-33 (MCVD) - Body ground Always 10 kΩ or higher
      M38-34 (MCI+) - Body ground Always 10 kΩ or higher
      M38-35 (MCI-) - Body ground Always 10 kΩ or higher
      M38-32 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT MAP LIGHT ASSEMBLY


    1. A01VAQAN01

      Remove the map light assembly.

      Click here

    2. Remove the telephone microphone assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-3 (MACC) - B-5 (MACC) Always Below 1 Ω
      A-4 (MCO+) - B-3 (MIC+) Always Below 1 Ω
      A-5 (SNS2) - B-1 (SNS2) Always Below 1 Ω
      A-6 (MCO-) - B-2 (MIC-) Always Below 1 Ω
      A-3 (MACC) - A-4 (MCO+) Always 10 kΩ or higher
      A-3 (MACC) - A-5 (SNS2) Always 10 kΩ or higher
      A-3 (MACC) - A-6 (MCO-) Always 10 kΩ or higher
      A-4 (MCO+) - A-5 (SNS2) Always 10 kΩ or higher
      A-4 (MCO+) - A-6 (MCO-) Always 10 kΩ or higher
      A-5 (SNS2) - A-6 (MCO-) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

  9. CHECK TELEMATICS TRANSCEIVER


    1. A01V8D4C23
      *a

      Component with harness connected

      (Telematics Transceiver)

      Disconnect the Q16 map light assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      M38-33 (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
      M38-32 (SGND) - Body ground Always Below 1 Ω
      M38-35 (MCI-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  10. CHECK TELEPHONE MICROPHONE ASSEMBLY


    1. Replace the telephone microphone assembly with a new or known good one and check that the malfunction disappears.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here