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

DESCRIPTION

w/o Telematics Transceiver:

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

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

w/ Telematics Transceiver:

• The radio and display 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 and display receiver assembly via the telematics transceiver.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK MICROPHONE (OPERATION CHECK)

   
   

   1. 

      Enter the "Microphone Check" screen. Refer to Check Microphone in Operation Check.

      Click here

   2. When a voice is input into the microphone, check that the microphone input level meter changes according to the input voice.

   3. Push the recording switch and perform voice recording.

      Tech Tips

      
      

      • Select the recording switch with the blower motor of the air conditioning system stopped. If an outlet of the air conditioning system is facing the microphone, noise may be recorded.

      • Voice can be recorded for up to 5 seconds.

   4. Check that the recording indicator remains on while recording and that the recorded voice is played normally without noise or distortion.

      OK
      All check results are normal.

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   NG

2. 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 AND DISPLAY RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER) Click here

   A

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

   
   

   1. Disconnect the G100 radio and display receiver assembly connector.

   2. Disconnect the Q2 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 G100-4 (MACC) - Q2-15 (MACC) Always Below 1 Ω G100-5 (MIN+) - Q2-14 (MCO+) Always Below 1 Ω G100-19 (MIN-) - Q2-13 (MCO-) Always Below 1 Ω G100-18 (SGND) - Body ground Always 10 kΩ or higher G100-4 (MACC) - Body ground Always 10 kΩ or higher G100-5 (MIN+) - Body ground Always 10 kΩ or higher G100-19 (MIN-) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. INSPECT MAP LIGHT ASSEMBLY

   
   

   1. Remove the map light assembly.

      Click here

   2. Inspect the map light assembly.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE MAP LIGHT ASSEMBLY Click here

   OK

5. 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 AND DISPLAY RECEIVER ASSEMBLY Click here

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

   
   

   1. Disconnect the G100 radio and display receiver assembly connector.

   2. Disconnect the G180 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition G100-5 (MIN+) - G180-18 (MCO+) Always Below 1 Ω G100-19 (MIN-) - G180-19 (MCO-) Always Below 1 Ω G100-5 (MIN+) - Body ground Always 10 kΩ or higher G100-19 (MIN-) - Body ground Always 10 kΩ or higher G100-18 (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 G180 telematics transceiver connector.

   2. Disconnect the Q2 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition G180-33 (MCVD) - Q2-15 (MACC) Always Below 1 Ω G180-34 (MCI+) - Q2-14 (MCO+) Always Below 1 Ω G180-35 (MCI-) - Q2-13 (MCO-) Always Below 1 Ω G180-33 (MCVD) - Body ground Always 10 kΩ or higher G180-34 (MCI+) - Body ground Always 10 kΩ or higher G180-35 (MCI-) - Body ground Always 10 kΩ or higher G180-32 (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. Remove the map light assembly.

      Click here

   2. Inspect the map light assembly.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE MAP LIGHT ASSEMBLY Click here

   OK

9. CHECK TELEMATICS TRANSCEIVER

   
   
   1. 

      *a	Component with harness connected (Telematics Transceiver)

      Disconnect the Q2 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 G180-33 (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 G180-32 (SGND) - Body ground Always Below 1 Ω G180-35 (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 AND DISPLAY RECEIVER ASSEMBLY Click here