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

DTC Code DTC Name
Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION

  • w/o Telematics Transceiver:

  • The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.

    Using this circuit, the radio receiver assembly sends power to the telephone microphone assembly, and the telephone microphone assembly sends microphone signals to the radio receiver assembly.

  • w/ Telematics Transceiver:

  • The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.

    Using this circuit, the telematics transceiver sends power to the telephone microphone assembly, and the telephone microphone assembly sends microphone signals to the radio receiver assembly via the telematics transceiver.

WIRING DIAGRAM

E350601E02

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. E355981N01

      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. E355981N01

      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. E283057C23

      *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