Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2022 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE
Control System Location Index (Us)
WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
PARTS DESCRIPTION
| 1 | Door electrical supply unit (See DOOR-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION .) (See DOOR-ELECTRICAL SUPPLY UNIT INSPECTION .) |
| 2 | Body control module (BCM) (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .) (See BODY CONTROL MODULE (BCM) INSPECTION (US) .) (See BODY CONTROL MODULE (BCM) BRACKET REMOVAL/INSTALLATION (US) .) (See VCM INITIAL SETTING .) |
| 3 | Electrical supply unit (ESU) (See ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION .) (See ELECTRICAL SUPPLY UNIT (ESU) INSPECTION .) (See ELECTRICAL SUPPLY UNIT (ESU) BRACKET REMOVAL/INSTALLATION .) |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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