TSB Document:

Affected Component: ELECTRICAL SYSTEM

Summary
Some vehicles may exhibit that DTC B2002:49 will not clear with the Mazda Modular Diagnostic System (MMDS). Applicable vehicles are equipped with the Electrical supply unit (ESU) BCKA-67-5Z0B. � DTC B2002:49 [BODY CONTROL MODULE (BCM)] - Electrical supply unit (ESU) internal malfunction (No warning/indicator light illumination) This is caused by improper control software of the ESU. To eliminate this concern, the control software of the ESU has been modified.

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Date Published
OCT 13, 2020
NHTSA TSB #
10182107
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