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

AUDIO / VIDEO  AUDIO AND VISUAL SYSTEM(Production Date from 2023/04)  B157913  Voice Recognition Microphone1 Circuit Open  


DESCRIPTION

The telephone microphone assembly is connected to the radio and display receiver assembly via voice recognition microphone 1 signal detection line.

This DTC is stored when the radio and display receiver assembly detects disconnection of telephone microphone assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
B157913 Voice Recognition Microphone1 Circuit Open Voice recognition microphone 1 terminal (SNS) disconnected
(2 trip detection logic)
·

Telephone microphone assembly

·

Radio and display receiver assembly

·

Harness or connector

·

Telematics transceiver


Navigation System A

WIRING DIAGRAM

E506893E04
0.813,2.729 2.875,3.313 2.063,0.583 10 false Telephone Microphone Assembly 3.167,2.75 5.281,3.104 2.115,0.354 10 false Telematics Transceiver 5.344,2.604 7.042,2.99 1.698,0.385 10 false Radio and Display Receiver Assembly 0.813,2.563 1.563,2.948 0.75,0.385 10 false T32 3.167,2.563 3.656,2.781 0.49,0.219 10 false I200 5.344,2.438 5.875,2.667 0.531,0.229 10 false I275 5.5,0.969 5.813,1.167 0.313,0.198 10 false 25 1.813,0.948 2.125,1.146 0.313,0.198 10 false 5 1.823,1.917 2.135,2.115 0.313,0.198 10 false 4 2.969,1.917 3.281,2.115 0.313,0.198 10 false 7 3.229,1.979 3.604,2.198 0.375,0.219 10 false MCI- 1.344,1.958 1.771,2.146 0.427,0.188 10 false MO1- 1.323,1.021 1.76,1.229 0.438,0.208 10 false SNS1 5.76,1.052 6.094,1.25 0.333,0.198 10 false SNS

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 HARNESS AND CONNECTOR (TELEPHONE MICROPHONE ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY, TELEMATICS TRANSCEIVER)

Pre-procedure1

a.

Disconnect the T32 telephone microphone assembly connector.


b.

Disconnect the I275 radio and display receiver assembly connector.


c.

Disconnect the I200 telematics transceiver connector.


Procedure1

d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
T32-5 (SNS1) - I275-25 (SNS) Always Below 1 Ω
T32-4 (MO1-) - I200-7 (MCI-) Always Below 1 Ω
T32-5 (SNS1) - Body ground Always 10 kΩ or higher
T32-4 (MO1-) - Body ground Always 10 kΩ or higher


Result:
Proceed to
OK
NG



Post-procedure1

e.

None



OK

2.INSPECT TELEMATICS TRANSCEIVER (MCI-)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.INSPECT TELEMATICS TRANSCEIVER (MCI-)

Pre-procedure1

a.

With the telematics transceiver connector connected, disconnect the T32 telephone microphone assembly connector.


Procedure1

b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
T32-4 (MO1-) - Body ground Always Below 1 Ω


Result:
Proceed to
OK
NG



Post-procedure1

c.

None



OK

3.INSPECT TELEPHONE MICROPHONE ASSEMBLY (SNS1, MO1-)

NG

REPLACE TELEMATICS TRANSCEIVER

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


3.INSPECT TELEPHONE MICROPHONE ASSEMBLY (SNS1, MO1-)

Pre-procedure1

a.

Remove the telephone microphone assembly.


Procedure1

b.
E364293C32
1.521,1.229 1.771,0.458 1.771,0.458 1.958,0.458 true 1.313,1.24 1.042,0.479 1.042,0.479 0.813,0.479 true 0.177,0.125 0.49,0.323 0.313,0.198 10 false *a 0.417,0.406 1.031,0.604 0.615,0.198 10 false SNS1 2.031,0.365 2.646,0.563 0.615,0.198 10 false MO1-
*a Component without harness connected
(Telephone microphone assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
5 (SNS1) - 4 (MO1-) Always Below 1 Ω


Result:
Proceed to
OK
NG



Post-procedure1

c.

None



OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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


NG

REPLACE TELEPHONE MICROPHONE ASSEMBLY

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