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
Data Link Connector (DLC) -2
- A DLC-2 compliant with the International Standardization Organization (ISO) standard has been adopted.
- Connector shapes and terminal layouts as specified by ISO 15031-3 (SAE J1962) have been adopted, and the terminals are 16-pin.
- : Not applicable
| Terminal | Function |
|---|---|
| A | Terminal for battery power supply |
| B | Terminal for headlight auto leveling system initial setting |
| C | SAS control module |
| D | - |
| E | Terminal LO for HS-CAN |
| F | Terminal HI for HS-CAN |
| G | - |
| H | Ground terminal for serial communication |
| I | - |
| J | Body ground terminal |
| K | - |
| L | - |
| M | - |
| N | - |
| O | - |
| P | - |
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.