RM38T0EC _56 Audio / Visual / Telematics _111966 AUDIO / VIDEO _0589552 AUDIO AND VISUAL SYSTEM(Production Date from 2023/04) J

AUDIO / VIDEO  AUDIO AND VISUAL SYSTEM(Production Date from 2023/04)  Microphone Circuit  


WIRING DIAGRAM

E475510E06
5.844,2.969 7.052,3.365 1.208,0.396 10 false Radio and Display Receiver Assembly 5.844,2.813 6.302,3.01 0.458,0.198 10 false I275 2.906,2.99 4.448,3.271 1.542,0.281 10 false Telematics Transceiver 2.917,2.792 3.375,2.99 0.458,0.198 10 false I200 1.688,3.385 2.51,3.615 0.823,0.229 10 false *: Shielded 6.021,0.385 6.635,0.583 0.615,0.198 10 false SNS 0.75,0.365 1.365,0.563 0.615,0.198 10 false SNS1 6.021,0.917 6.635,1.115 0.615,0.198 10 false MIN+ 6.031,1.448 6.646,1.646 0.615,0.198 10 false MIN- 6.031,1.906 6.646,2.104 0.615,0.198 10 false SGND 0.719,1.385 1.333,1.583 0.615,0.198 10 false MO1+ 0.729,1.927 1.344,2.125 0.615,0.198 10 false MO1- 0.708,0.896 1.323,1.094 0.615,0.198 10 false MAC1 3.073,0.906 3.688,1.104 0.615,0.198 10 false MCVD 3.698,0.906 4.313,1.104 0.615,0.198 10 false MCO+ 3.729,1.406 4.344,1.604 0.615,0.198 10 false MCO- 3.083,1.427 3.698,1.625 0.615,0.198 10 false MCI+ 3.083,1.938 3.698,2.135 0.615,0.198 10 false MCI- 3.063,2.427 3.677,2.625 0.615,0.198 10 false SGND 4.219,0.781 4.531,0.979 0.313,0.198 10 false 16 4.229,1.323 4.542,1.521 0.313,0.198 10 false 32 2.844,0.792 3.156,0.99 0.313,0.198 10 false 5 2.844,1.313 3.156,1.51 0.313,0.198 10 false 6 2.823,1.844 3.135,2.042 0.313,0.198 10 false 7 2.76,2.302 3.073,2.5 0.313,0.198 10 false 23 5.75,0.281 5.969,0.5 0.219,0.219 10 false 25 5.75,0.802 6,1 0.25,0.198 10 false 21 5.75,1.771 6.063,1.969 0.313,0.198 10 false 24 5.75,1.313 6.063,1.51 0.313,0.198 10 false 22 0.167,2.906 1.583,3.438 1.417,0.531 10 false Telephone Microphone Assembly 2.021,2.198 2.25,2.417 0.229,0.219 10 false * 5.01,1.656 5.24,1.875 0.229,0.219 10 false * 0.167,2.75 0.781,2.948 0.615,0.198 10 false T32 1.26,0.281 1.573,0.479 0.313,0.198 10 false 5 1.26,0.802 1.573,1 0.313,0.198 10 false 1 1.271,1.323 1.583,1.521 0.313,0.198 10 false 2 1.292,1.844 1.604,2.042 0.313,0.198 10 false 4

CAUTION / NOTICE / HINT

NOTICE:
·

When replacing the telematics transceiver, make sure to replace it with a new one.

·

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>AUDIO AND VISUAL SYSTEM (Production Date from 2023/04)>PRECAUTION



PROCEDURE

1.CHECK MICROPHONE
a.
E494163C03
1.167,0.5 1.917,1.25 true 0.969,0.406 1.281,0.563 0.313,0.156 10 false *a
*a Mic 1 Input Level


Enter diagnostic mode.

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>AUDIO AND VISUAL SYSTEM (Production Date from 2023/04)>DIAGNOSIS SYSTEM


b.

Select "Function Check/Setting" from the "Service Menu" screen.


c.

Select "Microphone Check" from the "Function Check/Setting I" screen.


d.

Speak into each telephone microphone assembly and check the microphone input level gauge display.

OK:

The microphone input levels of the gauge change in accordance with the voice.



Result:
Result Proceed to
Microphone input levels change for microphone 1 A
Microphone input level does not change for microphone 1 B



A

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B

2.CHECK TELEMATICS TRANSCEIVER (MICROPHONE POWER SOURCE AND BODY GROUND)
2.CHECK TELEMATICS TRANSCEIVER (MICROPHONE POWER SOURCE AND BODY GROUND)
HINT:

Measure the connector of the telematics transceiver while it is connected.


E431682C22
1.469,0.531 1.906,0.802 0.438,0.271 2.302,1.823 2.125,1.104 true 2.479,1.813 2.698,1.063 true 2.542,2.615 2.333,1.938 true 0.167,0.167 0.417,0.333 0.25,0.167 10 false *a 1.573,0.573 2.01,0.833 0.438,0.26 10 false I200 1.781,1 2.198,1.167 0.417,0.167 10 false MCI- 2.75,0.969 3.25,1.135 0.5,0.167 10 false MCVD 2.396,2.656 2.896,2.823 0.5,0.167 10 false SGND
*a Component with harness connected
(Telematics Transceiver)


a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I200-7 (MCI-) - Body ground Always Below 1 Ω
I200-23 (SGND) - Body ground Always Below 1 Ω



b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
I200-5 (MCVD) - Body ground Ignition switch ON 7.5 to 8.5 V



Result:
Proceed to
OK
NG



OK

3.CHECK TELEMATICS TRANSCEIVER (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)

NG

9.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - TELEPHONE MICROPHONE ASSEMBLY)
3.CHECK TELEMATICS TRANSCEIVER (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)
HINT:

Measure the connector of the telematics transceiver while it is connected.


E425736C64
1.5,0.229 1.906,0.49 0.406,0.26 0.813,1.354 0.656,0.656 true 0.646,2.073 0.823,1.49 true 0.135,0.146 0.448,0.344 0.313,0.198 10 false *a 1.594,0.271 2.052,0.469 0.458,0.198 10 false I200 0.177,0.573 0.792,0.771 0.615,0.198 10 false MCO+ 0.448,2.125 1.063,2.323 0.615,0.198 10 false MCO- 2.823,3.417 3.24,3.615 0.417,0.198 10 false GND
*a Component with harness connected
(Telematics Transceiver)


a.

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

Item Condition
Tester Connection I200-16 (MCO+) - I200-32 (MCO-)
Tool setting 50 mV/DIV., 500 ms/DIV.
Vehicle condition
1.

Turn the ignition switch to ON

2.

Sound is input to the telephone microphone assembly when the user is closer than 125 mm from the telephone microphone assembly sound holes in the roof headlining holder cover



OK:

The waveform is similar to that shown in the illustration.


HINT:
·

The oscilloscope waveform shown in the illustration is an example for reference only.

·

In order to ensure that a consistent sound level is input to the microphone, use a digital voice recorder, etc., to play back sound in the same location with respect to the microphone.




Result:
Result Proceed to
A waveform synchronized with voice signals is output A
A waveform synchronized with voice signals is not output B



A

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

B

5.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)
4.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)
a.

Disconnect the I275 radio and display receiver assembly connector.


b.

Disconnect the I200 telematics transceiver connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I275-21 (MIN+) - I200-16 (MCO+) Always Below 1 Ω
I275-22 (MIN-) - I200-32 (MCO-) Always Below 1 Ω
I275-21 (MIN+) - Body ground Always 10 kΩ or higher
I275-22 (MIN-) - Body ground Always 10 kΩ or higher
I275-24 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the I275 radio and display receiver assembly connector.


b.

Disconnect the I200 telematics transceiver connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I275-21 (MIN+) - I200-16 (MCO+) Always Below 1 Ω
I275-22 (MIN-) - I200-32 (MCO-) Always Below 1 Ω
I275-21 (MIN+) - Body ground Always 10 kΩ or higher
I275-22 (MIN-) - Body ground Always 10 kΩ or higher
I275-24 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - TELEPHONE MICROPHONE ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - TELEPHONE MICROPHONE ASSEMBLY)
a.

Disconnect the I200 telematics transceiver connector.


b.

Disconnect the T32 telephone microphone assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I200-5 (MCVD) - T32-1 (MAC1) Always Below 1 Ω
I200-6 (MCI+) - T32-2 (MO1+) Always Below 1 Ω
I200-7 (MCI-) - T32-4 (MO1-) Always Below 1 Ω
I200-5 (MCVD) - Body ground Always 10 kΩ or higher
I200-6 (MCI+) - Body ground Always 10 kΩ or higher
I200-7 (MCI-) - Body ground Always 10 kΩ or higher
I200-23 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)
a.

Disconnect the I275 radio and display receiver assembly connector.


b.

Disconnect the T32 telephone microphone assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I275-25 (SNS) - T32-5 (SNS1) Always Below 1 Ω
I275-25 (SNS) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

8.CHECK TELEPHONE MICROPHONE ASSEMBLY (OUTPUT TO TELEMATICS TRANSCEIVER)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK TELEPHONE MICROPHONE ASSEMBLY (OUTPUT TO TELEMATICS TRANSCEIVER)
E506895C03
1.49,0.271 1.896,0.531 0.406,0.26 1.125,1.948 1.469,1.333 true 2.313,1.958 1.917,1.302 true 0.094,0.083 0.406,0.281 0.313,0.198 10 false *a 2.833,3.448 3.292,3.646 0.458,0.198 10 false GND 1.583,0.313 2.063,0.563 0.479,0.25 10 false T32 0.729,1.906 1.344,2.104 0.615,0.198 10 false MO1- 2.385,1.906 3,2.104 0.615,0.198 10 false MO1+
*a Component with harness connected
(Telephone Microphone Assembly)


a.

Using an oscilloscope, measure the waveform according to the condition(s) in the table below.

Item Condition
Tester Connection T32-2 (MO1+) - T32-4 (MO1-)
Tool setting 50 mV/DIV., 500 ms/DIV.
Vehicle condition
1.

Turn the ignition switch to ON

2.

Sound is input to the telephone microphone assembly when the user is closer than 125 mm from the telephone microphone assembly sound holes in the roof headlining holder cover



OK:

The waveform is similar to that shown in the illustration.


HINT:
·

The oscilloscope waveform shown in the illustration is an example for reference only.

·

In order to ensure that a consistent sound level is input to the microphone, use a digital voice recorder, etc., to play back sound in the same location with respect to the microphone.




Result:
Result Proceed to
A waveform synchronized with voice signals is output A
A waveform synchronized with voice signals is not output B



A

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B

REPLACE TELEPHONE MICROPHONE ASSEMBLY

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9.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - TELEPHONE MICROPHONE ASSEMBLY)
a.

Disconnect the I200 telematics transceiver connector.


b.

Disconnect the T32 telephone microphone assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I200-5 (MCVD) - T32-1 (MAC1) Always Below 1 Ω
I200-6 (MCI+) - T32-2 (MO1+) Always Below 1 Ω
I200-7 (MCI-) - T32-4 (MO1-) Always Below 1 Ω
I200-5 (MCVD) - Body ground Always 10 kΩ or higher
I200-6 (MCI+) - Body ground Always 10 kΩ or higher
I200-7 (MCI-) - Body ground Always 10 kΩ or higher
I200-23 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the I275 radio and display receiver assembly connector.


b.

Disconnect the I200 telematics transceiver connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I275-21 (MIN+) - I200-16 (MCO+) Always Below 1 Ω
I275-22 (MIN-) - I200-32 (MCO-) Always Below 1 Ω
I275-21 (MIN+) - Body ground Always 10 kΩ or higher
I275-22 (MIN-) - Body ground Always 10 kΩ or higher
I275-24 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE TELEMATICS TRANSCEIVER

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS TRANSCEIVER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR