NHTSA ID Number: 11022718
Manufacturer Communication Number: SA-012-25b
TSB/Document Date: 2025-09-04
Summary
Customers having MAZDA
CONNECT concerns should have their vehicle repaired using the following repair procedure.
6
Go to connect.mazda.com ->
Support -> Compatibility.
Is the customers device
compatible?
No
The customers device is not compatible.
Yes
Go to step 8.
Check / Replace the CMU.
7
Does the same symptom occur
on another same model/year
vehicle?
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
• Document date and time of the condition.
• If possible, complete any one of the Microsoft
Forms Questionnaires. Go to MGSS ->
Infotainment -> MAZDA CONNECT Questionnaire
.
• See Warranty Information Note.
○
No
Yes
Vehicle operation is normal.
Check / Replace the CMU.
8
Reboot the customers device.
Does Bluetooth work correctly?
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
• Document date and time of the condition.
• If possible, complete any one of the Microsoft
Forms Questionnaires. Go to MGSS ->
Infotainment -> MAZDA CONNECT Questionnaire
.
• See Warranty Information Note.
○
No
Page 11 of 26
08/25/2025 10:46 AM tlawrenc
No. 7 Incorrect GPS position
Step
1
Inspection
Go to MAZDA CONNECT -> Navi menu, Travel
Information -> Where Am I? -> Settings -> GPS
information -> Check Available Satellites.
or
Go to MGSS "DIAGNOSTIC ASSIST FUNCTION
[CONNECTIVITY MASTER UNIT (US)]" and
perform Functional Inspection/Adjustment -> Navi
System Inspection -> Check GPS Received Level.
Result
Action
Yes
Normal Operation.
No
Go to step 2.
Yes
Go to step 4.
No
Go to step 3.
Yes
Go to step 9.
No
Swap wheels/tires with correct size. If
issue is fixed, inform the customer.
Yes
Go to step 5.
No
Insert the connector correctly.
Yes
Repair / Replace GPS wiring
harness.
No
Go to TSB 09-021/20.
Yes
Repair Complete.
No
Go to step 7.
Yes
Go to step 8.
No
Insert the connectors correctly.
Yes
Repair / Replace CMU wiring
harness.
No
Go to step 9.
Yes
Repair completed.
Does the Navi system show correct vehicle position?
2
Using M-MDS, are any of the following DTC's
stored?
- B119F:13, GPS antenna signal circuit malfunction
(short to power or open circuit)
- B119F:2B, GPS antenna signal circuit malfunction
(short to ground)
3
Is the wheel and tire size correct according to the tire
label?
4
Is the GPS antenna connector secured properly?
5
Is the GPS wiring harness open or shorted?
6
Did TSB 09-021/20 resolve the concern?
7
Are the CMU connectors secured properly?
8
Is the CMU wiring harness open or shorted?
Check / Replace the CMU.
9
Replace GPS antenna. Does the Navigation system
show correct position?
No
• Document date and time of the
condition.
• Retrieve CMU log data if
possible before replacing the
Page 12 of 26
08/25/2025 10:46 AM tlawrenc
CMU.
Important Note
• Retrieve CMU backup data if
possible before replacing the
CMU.
○
10
Using M-MDS, is DTC B119F:49 stored?
(Communication error with GNSS)
11 Are the CMU connectors secured properly?
Yes
Go to step 11.
No
Go to step 13.
Yes
Go to step 12.
No
Insert the connectors correctly.
Yes
Repair / Replace CMU wiring
harness.
Check / Replace the CMU.
12 Is the CMU wiring harness open or shorted?
No
Check / Replace the CMU.
13
• Document date and time of the condition.
• Retrieve CMU log data if possible before
replacing the CMU.
• Retrieve CMU backup data if possible before
replacing the CMU.
• Document date and time of the
condition.
• Retrieve CMU log data if
possible before replacing the
CMU.
Important Note
• Retrieve CMU backup data if
possible before replacing the
CMU.
• If necessary, contact Hotline
for additional support.
• See Warranty Information
Note.
○
Yes
Repair completed.
No
Repair / Replace GPS antenna.
Did DTC B119F:49 clear?
NOTE: Remove aftermarket GPS devices that may interfere with vehicle GPS antenna.
Example: Some radar detectors may emit radio waves that interfere with the vehicle GPS antenna.
Page 13 of 26
08/25/2025 10:46 AM tlawrenc
No. 8 Voice Recognition Does Not Work
Step
Inspection
Result
1
Using M-MDS, are any infotainment system DTC's
stored?
Yes
Go to MGSS for DTC diagnosis.
No
Go to step 2.
Pass Go to step 3.
2
Go to MGSS "DIAGNOSTIC ASSIST FUNCTION
[CONNECTIVITY MASTER UNIT (US)]" and
perform Functional Inspection/Adjustment ->
Steering SW Inspection -> Did the Steering SW
Inspection Pass?
Fail
Action
Go to MGSS STEERING SWITCH
INSPECTION.
Check / Replace the CMU.
3
Go to MGSS "DIAGNOSTIC ASSIST FUNCTION
[CONNECTIVITY MASTER UNIT (US)]" and
perform Functional Inspection/Adjustment ->
Microphone Inspection ->
Did the Microphone Inspection Pass?
• Document date and time of the
condition.
• Retrieve CMU log data if possible
before replacing the CMU.
Important Note
• Retrieve CMU backup data if
possible before replacing the
CMU.
• If necessary, contact Hotline for
additional support.
• See Warranty Information Note.
○
Pass
Fail
Go to MGSS MICROPHONE
INSPECTION.
No. 9 Cannot Make a Hands-Free Call
Step
Inspection
Result
Action
Using M-MDS, are any
infotainment system DTC's
stored?
Yes
Go to MGSS for DTC diagnosis.
1
No
Go to step 2.
2
Is Bluetooth enabled on the
customers device?
Yes
Go to step 3.
No
Enable Bluetooth on the customers device.
Yes
Go to step 4.
3
Is the customers device data
service strength good?
No
Move to a location where data service strength is good
and retest.
4
Is the customers device paired to
the vehicle?
Yes
Go to step 5.
No
Pair the customers device to the vehicle.
5
Is the customers device selected
in MAZDA CONNECT settings?
Yes
Go to step 6.
No
Select the customers device from Bluetooth settings.
6
Delete the device from MAZDA
CONNECT and then re-pair it.
Yes
Normal Operation.
No
Go to step 7.
Page 14 of 26
08/25/2025 10:46 AM tlawrenc
Does Bluetooth work correctly?
Yes
Go to step 8.
7
Go to connect.mazda.com ->
Support -> Compatibility.
Is the customers device
compatible?
No
The customers device is not compatible.
Does the same symptom occur
on another same model/year
vehicle?
Yes
Go to step 9.
8
No
Go to step 10.
9
Reboot the customers device.
Does Bluetooth work correctly?
Yes
Vehicle operation is normal.
No
Go to step 10.
Is the Bluetooth device in a place
where radio waves may be
10 blocked?
(Behind or under a sheet, in a
box, in a purse/bag, ext.)
Yes
Move the Bluetooth device away from hidden location.
No
Go to step 11.
Is the Bluetooth device contacting
or blocked by metal objects?
Yes
Move the Bluetooth device away from metal objects.
No
Go to step 12.
Yes
Disconnect other USB device.
No
Go to step 13.
Yes
Move to a different location.
This may be caused by electrical interference by radio
stations, specific small power radio stations, or amateur
radio stations for mobile identification used in industrial,
scientific and medical devices.
No
Go to step 14.
Yes
Go to step 15.
No
The customers device is not compatible.
11
Is a Bluetooth device and a USB
12 device connected at the same
time?
13
14
Does the problem occur in a
specific geological location only?
Does the same symptom occur
on another Bluetooth device?
Check / Replace the CMU.
Does the voice recognition
system operate using other
15
functions such as Bluetooth
Audio?
Yes
No
• Document date and time of the condition.
• Retrieve CMU log data if possible before replacing
the CMU.
Important Note
• Retrieve CMU backup data if possible before
replacing the CMU.
• If necessary, contact Hotline for additional
support.
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TSB/Document ID: SA-012-25b
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-21
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem: MAZDA CONNECT
Previous TSB | Next TSB |
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