SA-027-23a

BULLETIN NOTES
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red.
Previous SAs:
Date(s) Issued:
SA-027/23
04/28/23
APPLICABLE MODEL(S)/VINS
2021-2023 Mazda3
2021-2023 CX-5
2022-2023 MX-30
2021-2023 CX-30
2021-2023 CX-9
2023 CX-50
DESCRIPTION
Some customers may experience the following:
In-Vehicle Network Malfunction error message
Master Warning light ON.
Connected Vehicle Reception Icon shows "X"
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DTC U3000:04 (Telematics communication unit internal malfunction) stored.
NOTE: The vehicle does not apply to 09-001/23 because CSP04 is not "OPEN".
REPAIR PROCEDURE
1. Verify customer concern.
2. Document DTC's stored on the repair order.
3. Check eMDCS for CSP04 status.
Is CSP04 open?
• YES- Go to 09-001/23
• NO - Go to next step
4. Check status of DTC U3000:04.
Is DTC U3000:04 stored as Status "Current"?
• YES - Go to next step.
• NO - This service information does not apply. Continue with normal MGSS diagnosis.
5. Disconnect battery for 1 hour.
6. Connect battery.
7. Check status of DTC U3000:04.
Did In-Vehicle Network Malfunction error message clear and DTC U3000:04 now shows Status "Past"?
• YES - Go to next step
• NO - Contact Hotline for technical support.
8. Clear DTC.
9. Check TCU software version. Go to MGSS -> Infotainment/TCU -> Telematics Control Unit (TCU) Updates. and
update the TCU software if MGSS has a newer version available.
10. Verify the repair.
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WARRANTY INFORMATION
NOTE:
• This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
• This repair will be covered under Mazda’s New Vehicle Limited Warranty.
• Additional diagnostic time cannot be claimed for this repair.
Warranty Type
A
Symptom Code
6X
Damage Code
99
Part Number Main Cause
Quantity
Operation Number / Labor Hours:
****-67-CM0*
(Use Data Communication Module P/N)
0
T0524XRT / 0.4 Hrs
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