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

DESCRIPTION

w/o Manual (SOS) Switch

• The radio receiver assembly and map light assembly (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 map light assembly (telephone microphone assembly), and the map light assembly (telephone microphone assembly) sends microphone signals to the radio receiver assembly.

w/ Manual (SOS) Switch

• The radio receiver assembly and map light assembly (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 map light assembly (telephone microphone assembly), and the map light assembly (telephone microphone assembly) sends microphone signals to the radio receiver assembly via the telematics transceiver.

WIRING DIAGRAM

PROCEDURE

1. CONFIRM MODEL

   
   

   1. Choose the model to be inspected.

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

   
   

   B

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

   A

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

   
   

   1. Disconnect the F47 radio receiver assembly connector.

   2. Disconnect the R2 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 F47-6 (SNS2) - R2-1 (SNS2) Always Below 1 Ω F47-4 (MACC) - R2-9 (MACC) Always Below 1 Ω F47-5 (MIN+) - R2-8 (MCO+) Always Below 1 Ω F47-19 (MIN-) - R2-7 (MCO-) Always Below 1 Ω F47-6 (SNS2) or R2-1 (SNS2) - Body ground Always 10 kΩ or higher F47-4 (MACC) or R2-9 (MACC) - Body ground Always 10 kΩ or higher F47-5 (MIN+) or R2-8 (MCO+) - Body ground Always 10 kΩ or higher F47-19 (MIN-) or R2-7 (MCO-) - Body ground Always 10 kΩ or higher F47-18 (SGND) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. INSPECT RADIO RECEIVER ASSEMBLY

   
   

   1. Connect the F47 radio receiver assembly connector.

   2. Connect the R2 map light assembly (telephone microphone assembly) connector.

   3. 

      *a	Component with harness connected (Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition F47-4 (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 F47-18 (SGND) - Body ground Always Below 1 Ω F47-19 (MIN-) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

4. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)

   
   

   1. Remove the map light assembly (telephone microphone assembly).

      Click here

   2. 

      *a	Component without harness connected (Map Light Assembly (Telephone Microphone Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 (SNS2) - 7 (MCO-) Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

   OK

5. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)

   
   

   1. Connect the R2 map light assembly (telephone microphone assembly) connector.

   2. Turn the ignition switch to ACC.

   3. 

      *a	Component with harness connected (Map Light Assembly (Telephone Microphone Assembly))

      Connect an oscilloscope to terminals 8 (MCO+) and 7 (MCO-) of the R2 map light assembly (telephone microphone assembly) connector.

   4. Check the waveform of the map light assembly (telephone microphone assembly) using the oscilloscope.

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

   
   

   A

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

   B

   REPLACE MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

6. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))

   
   

   1. Disconnect the F47 radio receiver assembly connector.

   2. Disconnect the R2 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 F47-6 (SNS2) - R2-1 (SNS2) Always Below 1 Ω F47-6 (SNS2) or R2-1 (SNS2) - 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 (TELEPHONE MICROPHONE ASSEMBLY))

   
   

   1. Disconnect the F51 telematics transceiver connector.

   2. Disconnect the R2 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 F51-33 (MCVD) - R2-9 (MACC) Always Below 1 Ω F51-34 (MCI+) - R2-8 (MIC+) Always Below 1 Ω F51-35 (MCI-) - R2-7 (MIC-) Always Below 1 Ω F51-33 (MCVD) or R2-9 (MACC) - Body ground Always 10 kΩ or higher F51-34 (MCI+) or R2-8 (MIC+) - Body ground Always 10 kΩ or higher F51-35 (MCI-) or R2-7 (MIC-) - Body ground Always 10 kΩ or higher F51-32 (SGND) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

   
   

   1. Disconnect the F47 radio receiver assembly connector.

   2. Disconnect the F51 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition F47-5 (MIN+) - F51-18 (MCO+) Always Below 1 Ω F47-19 (MIN-) - F51-19 (MCO-) Always Below 1 Ω F47-5 (MIN+) or F51-18 (MCO+) - Body ground Always 10 kΩ or higher F47-19 (MIN-) or F51-19 (MCO-) - Body ground Always 10 kΩ or higher F47-18 (SGND) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

9. INSPECT RADIO RECEIVER ASSEMBLY

   
   

   1. Connect the F47 radio receiver assembly connector.

   2. Disconnect the F51 telematics transceiver connector.

   3. 

      *a	Component with harness connected (Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition F47-18 (SGND) - Body ground Always Below 1 Ω F47-19 (MIN-) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

10. INSPECT TELEMATICS TRANSCEIVER

    
    

    1. Reconnect the F51 telematics transceiver connector.

    2. 

       *a	Component with harness connected (Telematics Transceiver)

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

       Standard Voltage
       Tester Connection Condition Specified Condition F51-33 (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 F51-32 (SGND) - Body ground Always Below 1 Ω F51-35 (MCI-) - Body ground Always Below 1 Ω

       Result
       Proceed to OK NG

    
    

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

11. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)

    
    

    1. Remove the map light assembly (telephone microphone assembly).

       Click here

    2. 

       *a	Component without harness connected (Map Light Assembly (Telephone Microphone Assembly))

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

       Standard Resistance
       Tester Connection Condition Specified Condition 1 (SNS2) - 7 (MIC-) Always Below 1 Ω

       Result
       Proceed to OK NG

    
    

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

12. INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)

    
    

    1. Reconnect the F47 radio receiver assembly connector.

    2. Reconnect the R2 map light assembly (telephone microphone assembly) connector.

    3. Reconnect the F51 telematics transceiver connector.

    4. Turn the ignition switch to ACC.

    5. 

       *a	Component with harness connected (Map Light Assembly (Telephone Microphone Assembly))

       Connect an oscilloscope to terminals 8 (MCO+) and 7 (MCO-) of the R2 map light assembly (telephone microphone assembly) connector.

    6. Check the waveform of the map light assembly (telephone microphone assembly) using the oscilloscope.

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

    
    

    A

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

    B

    REPLACE MAP LIGHT ASSEMBLY Click here