should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2020 Mazda North American Operations, U.S.A.
07/16/2020 3:01 PM tlawrenc

Service Alert No.: SA-027/20

Last Issued: 07/16/2020

Check / Replace the CMU.
Yes
12

Swap the CMU from known good vehicle.
Does the Commander Switch work correctly?
No

1. Retrieve the data log if possible before
replacing the CMU
2. Document date and time of the
condition
Repair/Replace wiring harness. Go to MGSS
View Content - Wiring Diagram - Body and
Accessories - Entertainment System.

No. 6 Bluetooth device will not pair
Step
1

2

Inspection
Using M-MDS, are any infotainment system DTC's
stored?
Is Bluetooth enabled on the customers device?

Result

Action

Yes

Go to MGSS for DTC diagnosis

No

Go to step 2.

Yes

Go to step 3.

No

Enable Bluetooth on the customers
device.

Yes

Go to step 4.

No

Pair the customers device to the
vehicle.

Yes

Go to step 5.

No

Select the customers device from
Bluetooth settings.

3

Is the customers device paired to the vehicle?

4

Is the customers device selected in MAZDA CONNECT
settings?

5

Delete the device from MAZDA CONNECT and then re- Yes
pair it.
No
Does Bluetooth work correctly?

6

Go tohttp://infotainment.mazdahandsfree.comWeb
Site.
Is the customers device compatible?

Normal Operation
Go to step 6.

Yes

Go to step 7.

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?

No

1. Document device model,
software version and
occurrence of the condition.
Page 8 of 15

CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2020 Mazda North American Operations, U.S.A.
07/16/2020 3:01 PM tlawrenc

Service Alert No.: SA-027/20

Last Issued: 07/16/2020

2. Retrieve the data log if possible
before replacing the CMU
3. Document date and time of the
condition
Yes

Vehicle operation is normal.
Check / Replace the CMU.

8

Reboot the customers device. Does Bluetooth work
correctly?

No

1. Document device model,
software version and
occurrence of the condition.
2. Retrieve the data log if possible
before replacing the CMU
3. Document date and time of the
condition

No. 7 Incorrect GPS position
Step

Inspection
Go to MAZDA CONNECT - Navi menu, Travel Information Where Am I? - Settings - GPS information - Check Available
Satellites.

Result

Action

Yes

Normal Operation.

No

Go to step 2.

Go to step 3.

2

Using M-MDS, are any of the following DTC's stored?
Yes
- B119F:13, GPS antenna signal circuit malfunction (short to
power or open circuit)
- B119F:2B, GPS antenna signal circuit malfunction (short to No
ground)

3

Is the GPS antenna connector secured properly?

Yes

Go to step 4.

No

Insert the connector correctly.

4

Is the GPS wiring harness open or shorted?

Yes

Repair / Replace GPS wiring
harness.

Or
1

Go to MGSS "DIAGNOSTIC ASSIST FUNCTION
[CONNECTIVITY MASTER UNIT (US)]"
Perform Functional Inspection/Adjustment - Navi System
Inspection - Check GPS Received Level.
Does the Navi system show correct vehicle position?

Go to step 8.

Page 9 of 15
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2020 Mazda North American Operations, U.S.A.
07/16/2020 3:01 PM tlawrenc

Service Alert No.: SA-027/20

Last Issued: 07/16/2020

5

Did TSB 09-021/20 resolve the concern?

6

Are the CMU connectors secured properly?

7

Is the CMU wiring harness open or shorted?

No

Go to TSB 09-021/20.

Yes

Repair Complete

No

Go to step 6.

Yes

Go to step 7.

No

Insert the connectors correctly.

Yes

Repair / Replace CMU wiring
harness.

No

Go to step 8.

Yes

Repair completed.
Check / Replace the CMU.

8

Replace GPS antenna. Does the Navigation system show
correct position?

9

Using M-MDS, is DTC B119F:49 stored?
(Communication error with GNSS)

10

Are the CMU connectors secured properly?

No

1. Retrieve the data log if
possible before replacing
the CMU
2. Document date and time
of the condition

Yes

Go to step 10.

No

Go to step 12.

Yes

Go to step 11.

No

Insert the connectors correctly.

Yes

Repair / Replace CMU wiring
harness.
Check / Replace the CMU.

11

Is the CMU wiring harness open or shorted?
No

12

Check / Replace the CMU. Retrieve CMU data log if possible Yes
before replacing CMU.
No
Did DTC B119F:49 clear?

1. Retrieve the data log if
possible before replacing
the CMU
2. Document date and time
of the condition
Repair completed.
Repair / Replace GPS antenna.

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 10 of 15
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2020 Mazda North American Operations, U.S.A.
07/16/2020 3:01 PM tlawrenc

Service Alert No.: SA-027/20

Last Issued: 07/16/2020

No. 8 Voice Recognition Does Not Work
Step

Inspection

Result

Action

Yes

Go to MGSS for DTC diagnosis

No

Go to step 2.

1

Using M-MDS, are any infotainment system DTC's stored?

2

Go to MGSS "DIAGNOSTIC ASSIST FUNCTION
Pass
[CONNECTIVITY MASTER UNIT (US)]"
Perform Functional Inspection/Adjustment - Steering SW Fail
Inspection - Did the Steering SW Inspection Pass?

Go to step 3.
Go to MGSS STEERING SWITCH
INSPECTION.
Check / Replace the CMU.

3

Go to MGSS "DIAGNOSTIC ASSIST FUNCTION
Pass
[CONNECTIVITY MASTER UNIT (US)]"
Perform Functional Inspection/Adjustment - Microphone
Inspection Did the Microphone Inspection Pass?
Fail

1. Retrieve the data log if
possible before replacing the
CMU
2. Document date and time of
the condition
Go to MGSS MICROPHONE
INSPECTION.

No. 9 Cannot Make a Hands-Free Call
Step

Inspection

1

Using M-MDS, are any infotainment system
DTC's stored?

2

Is Bluetooth enabled on the customers device?

3

Is the customers device data service strength
good?

4

Is the customers device paired to the vehicle?

5

Is the customers device selected in MAZDA