RM38T0EC _56 Audio / Visual / Telematics _111967 NAVIGATION / MULTI INFO DISPLAY _0588532 NAVIGATION SYSTEM(Production Date from 2023/04) J

NAVIGATION / MULTI INFO DISPLAY  NAVIGATION SYSTEM(Production Date from 2023/04)  Microphone Circuit  


WIRING DIAGRAM

E511468
5.323,0.521 5.781,0.719 0.458,0.198 10 false I255 5.708,0.979 6.438,1.198 0.729,0.219 10 false MAC2 5.385,0.75 6.115,0.969 0.729,0.219 10 false 20 5.708,0.531 6.438,0.75 0.729,0.219 10 false SNS2 5.375,0.333 6.104,0.552 0.729,0.219 10 false 21 5.719,1.375 6.448,1.594 0.729,0.219 10 false MI2+ 5.719,1.792 6.448,2.01 0.729,0.219 10 false MI2- 5.385,1.177 6.115,1.396 0.729,0.219 10 false 17 5.385,1.594 6.115,1.813 0.729,0.219 10 false 18 5.375,1.99 6.104,2.208 0.729,0.219 10 false 19 5.708,2.208 6.438,2.427 0.729,0.219 10 false SGD2 5.323,2.938 5.781,3.135 0.458,0.198 10 false I254 5.729,2.958 6.458,3.177 0.729,0.219 10 false SNS 5.375,2.74 6.104,2.958 0.729,0.219 10 false 25 5.729,3.385 6.458,3.604 0.729,0.219 10 false MIN+ 5.729,3.813 6.458,4.031 0.729,0.219 10 false MIN- 5.719,4.219 6.448,4.438 0.729,0.219 10 false SGND 5.375,4.01 6.104,4.229 0.729,0.219 10 false 24 5.385,3.167 6.115,3.385 0.729,0.219 10 false 21 5.385,3.594 6.115,3.813 0.729,0.219 10 false 22 4.646,2.063 5.375,2.281 0.729,0.219 10 false * 4.646,4.083 5.375,4.302 0.729,0.219 10 false * 2.5,4.49 3.229,4.708 0.729,0.219 10 false * 2.438,2.313 2.896,2.51 0.458,0.198 10 false T33 2.438,2.5 5.094,2.729 2.656,0.229 10 false Telephone Microphone Assembly RH 3.688,0.521 4.417,0.74 0.729,0.219 10 false SNS2 3.667,0.927 4.396,1.146 0.729,0.219 10 false MAC2 3.677,1.344 4.406,1.563 0.729,0.219 10 false MO2+ 3.719,1.75 4.448,1.969 0.729,0.219 10 false MO2- 4.177,0.427 4.906,0.646 0.729,0.219 10 false 5 4.177,0.833 4.906,1.052 0.729,0.219 10 false 1 4.188,1.26 4.917,1.479 0.729,0.219 10 false 2 4.188,1.688 4.917,1.906 0.729,0.219 10 false 4 5.5,5.031 6.698,5.51 1.198,0.479 10 false Radio and Display Receiver Assembly 1.281,2.938 2.01,3.156 0.729,0.219 10 false SNS1 3.188,4.188 3.917,4.406 0.729,0.219 10 false MCI- 3.177,3.781 3.906,4 0.729,0.219 10 false MCI+ 3.177,3.354 3.906,3.573 0.729,0.219 10 false MCVD 3.177,4.615 3.906,4.833 0.729,0.219 10 false SGND 3.656,3.344 4.385,3.563 0.729,0.219 10 false MCO+ 3.677,3.792 4.406,4.01 0.729,0.219 10 false MCO- 4.135,3.25 4.865,3.469 0.729,0.219 10 false 16 4.146,3.667 4.875,3.885 0.729,0.219 10 false 32 2.969,3.26 3.698,3.479 0.729,0.219 10 false 5 2.969,3.677 3.698,3.896 0.729,0.219 10 false 6 2.969,4.083 3.698,4.302 0.729,0.219 10 false 7 2.917,4.51 3.646,4.729 0.729,0.219 10 false 23 2.948,4.938 3.406,5.135 0.458,0.198 10 false I200 2.938,5.083 4.844,5.281 1.906,0.198 10 false Telematics Transceiver 0.5,4.563 0.958,4.76 0.458,0.198 10 false T32 0.5,4.719 1.969,5.177 1.469,0.458 10 false Telephone Microphone Assembly LH 0.26,5.448 0.99,5.667 0.729,0.219 10 false *: Shielded 1.26,3.333 1.99,3.552 0.729,0.219 10 false MAC1 1.26,3.75 1.99,3.969 0.729,0.219 10 false MO1+ 1.292,4.167 2.021,4.385 0.729,0.219 10 false MO1- 1.75,2.844 2.479,3.063 0.729,0.219 10 false 5 1.75,3.26 2.479,3.479 0.729,0.219 10 false 1 1.76,3.667 2.49,3.885 0.729,0.219 10 false 2 1.76,4.083 2.49,4.302 0.729,0.219 10 false 4 5.323,0.948 5.781,1.146 0.458,0.198 10 false I255 5.323,1.365 5.781,1.563 0.458,0.198 10 false I255 5.323,1.781 5.781,1.979 0.458,0.198 10 false I255 5.323,2.188 5.781,2.385 0.458,0.198 10 false I255 5.323,3.365 5.781,3.563 0.458,0.198 10 false I254 5.323,3.781 5.781,3.979 0.458,0.198 10 false I254 5.323,4.198 5.781,4.396 0.458,0.198 10 false I254

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>NAVIGATION / MULTI INFO DISPLAY>NAVIGATION SYSTEM (Production Date from 2023/04)>PRECAUTION



PROCEDURE

1.CHECK MICROPHONE
a.
E466848
1.188,0.469 1.906,1.271 true 1.198,2.813 1.938,1.552 true 0.99,0.344 1.302,0.542 0.313,0.198 10 false *a 0.969,2.698 1.281,2.896 0.313,0.198 10 false *b
*a Mic 1 Input Level
*b Mic 2 Input Level


Enter diagnostic mode.

Click hereAudio / Visual / Telematics>NAVIGATION / MULTI INFO DISPLAY>NAVIGATION 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 and 2 A
Microphone input level does not change for microphone 1 B
Microphone input level does not change for microphone 2 C



A

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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B

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

C

11.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY RH)
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 LH)
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 LH 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 I254 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
I254-21 (MIN+) - I200-16 (MCO+) Always Below 1 Ω
I254-22 (MIN-) - I200-32 (MCO-) Always Below 1 Ω
I254-21 (MIN+) - Body ground Always 10 kΩ or higher
I254-22 (MIN-) - Body ground Always 10 kΩ or higher
I254-24 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>RADIO RECEIVER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the I254 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
I254-21 (MIN+) - I200-16 (MCO+) Always Below 1 Ω
I254-22 (MIN-) - I200-32 (MCO-) Always Below 1 Ω
I254-21 (MIN+) - Body ground Always 10 kΩ or higher
I254-22 (MIN-) - Body ground Always 10 kΩ or higher
I254-24 (SGND) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the I200 telematics transceiver connector.


b.

Disconnect the T32 telephone microphone assembly LH 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 LH)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the I254 radio and display receiver assembly connector.


b.

Disconnect the T32 telephone microphone assembly LH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I254-25 (SNS) - T32-5 (SNS1) Always Below 1 Ω
I254-25 (SNS) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK TELEPHONE MICROPHONE ASSEMBLY LH (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 LH)


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 LH 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

REPLACE TELEMATICS TRANSCEIVER

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B

REPLACE TELEPHONE MICROPHONE ASSEMBLY LH

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>MICROPHONE>REMOVAL


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

Disconnect the I200 telematics transceiver connector.


b.

Disconnect the T32 telephone microphone assembly LH 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 I254 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
I254-21 (MIN+) - I200-16 (MCO+) Always Below 1 Ω
I254-22 (MIN-) - I200-32 (MCO-) Always Below 1 Ω
I254-21 (MIN+) - Body ground Always 10 kΩ or higher
I254-22 (MIN-) - Body ground Always 10 kΩ or higher
I254-24 (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

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

Disconnect the I255 radio and display receiver assembly connector.


b.

Disconnect the T33 telephone microphone assembly RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I255-17 (MI2+) - T33-2 (MO2+) Always Below 1 Ω
I255-18 (MI2-) - T33-4 (MO2-) Always Below 1 Ω
I255-20 (MAC2) - T33-1 (MAC2) Always Below 1 Ω
I255-21 (SNS2) - T33-5 (SNS2) Always Below 1 Ω
I255-17 (MI2+) - Body ground Always 10 kΩ or higher
I255-18 (MI2-) - Body ground Always 10 kΩ or higher
I255-20 (MAC2) - Body ground Always 10 kΩ or higher
I255-19 (SGD2) - Body ground Always 10 kΩ or higher
I255-21 (SNS2) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

12.CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY (MAC2, MI2-)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY (MAC2, MI2-)
a.

With the I255 radio and display receiver assembly connector connected, disconnect the T33 telephone microphone assembly RH connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
T33-4 (MO2-) - Body ground Always Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
T33-1 (MAC2) - Body ground Ignition switch ON 7.5 to 8.5 V



Result:
Proceed to
OK
NG



OK

13.CHECK TELEPHONE MICROPHONE ASSEMBLY RH (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>RADIO RECEIVER>REMOVAL


13.CHECK TELEPHONE MICROPHONE ASSEMBLY RH (OUTPUT TO RADIO AND DISPLAY RECEIVER ASSEMBLY)
a.
E506895
1.5,0.313 1.906,0.573 0.406,0.26 1.177,2 1.49,1.354 true 2.292,1.969 1.948,1.344 true 0.094,0.073 0.406,0.271 0.313,0.198 10 false *a 2.833,3.417 3.292,3.615 0.458,0.198 10 false GND 1.604,0.354 2.083,0.604 0.479,0.25 10 false T33 0.771,1.896 1.385,2.094 0.615,0.198 10 false MO2- 2.354,1.927 2.969,2.125 0.615,0.198 10 false MO2+
*a Component with harness connected
(Telephone microphone assembly RH)


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

Item Condition
Tester Connection T33-2 (MO2+) - T33-4 (MO2-)
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 RH 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

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>RADIO RECEIVER>REMOVAL


B

REPLACE TELEPHONE MICROPHONE ASSEMBLY RH

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>MICROPHONE>REMOVAL