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

NAVIGATION / MULTI INFO DISPLAY  NAVIGATION SYSTEM(Production Date from 2023/04)  B154913  Voice Recognition Microphone2 Circuit Open  


DESCRIPTION

The telephone microphone assembly RH is connected to the radio and display receiver assembly via voice recognition microphone 2 signal detection line.

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

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
B154913 Voice Recognition Microphone2 Circuit Open Voice recognition microphone 2 terminal (SNS2) disconnected
(2 trip detection logic)
·

Telephone microphone assembly RH

·

Radio and display receiver assembly

·

Harness or connector


Navigation System A

WIRING DIAGRAM

E506892E02
1.313,1.021 1.74,1.219 0.427,0.198 10 false SNS2 1.333,1.958 1.75,2.156 0.417,0.198 10 false MO2- 1.823,0.927 2.073,1.115 0.25,0.188 10 false 5 1.844,1.865 2.094,2.052 0.25,0.188 10 false 4 0.781,2.583 1.417,2.917 0.635,0.333 10 false T33 0.781,2.75 2.833,3.396 2.052,0.646 10 false Telephone Microphone Assembly RH 5.292,2.573 7,2.927 1.708,0.354 10 false Radio and Display Receiver Assembly 5.292,2.406 5.74,2.594 0.448,0.188 10 false I255 5.76,1.021 6.219,1.208 0.458,0.188 10 false SNS2 5.781,1.99 6.302,2.177 0.521,0.188 10 false MI2- 5.479,1.906 5.771,2.125 0.292,0.219 10 false 18 5.49,0.917 5.781,1.135 0.292,0.219 10 false 21

CAUTION / NOTICE / HINT

NOTICE:

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 HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY RH)

Pre-procedure1

a.

Disconnect the I255 radio and display receiver assembly connector.


b.

Disconnect the T33 telephone microphone assembly RH connector.


Procedure1

c.

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

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


Result:
Proceed to
OK
NG



Post-procedure1

d.

None



OK

2.INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (MI2-)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (MI2-)

Pre-procedure1

a.

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


Procedure1

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


Result:
Proceed to
OK
NG



Post-procedure1

c.

None



OK

3.INSPECT TELEPHONE MICROPHONE ASSEMBLY RH (SNS2, MO2-)

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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


3.INSPECT TELEPHONE MICROPHONE ASSEMBLY RH (SNS2, MO2-)

Pre-procedure1

a.

Remove the telephone microphone assembly RH.


Procedure1

b.
E364293C33
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 SNS2 2.031,0.375 2.646,0.573 0.615,0.198 10 false MO2-
*a Component without harness connected
(Telephone microphone assembly RH)


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

Standard Resistance:
Tester Connection Condition Specified Condition
5 (SNS2) - 4 (MO2-) 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 RH

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