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.
2003 Mazda 6 s, AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Component Location |
|---|---|
| ABS/TCS Hydraulic Unit Control Module | At right front corner of engine compartment. |
| Auto Light-Off Control Module | Behind left side of dash. See Figure. |
| Door Lock Control Module | Behind right side of dash. |
| Fan Control Module | At left front of engine compartment. See Figure. |
| Flasher Control Module | Behind left side of dash. See Figure. |
| PCM | Behind left side of dash. See Figure. |
| PWM Unit | Behind right side of dash. See Figure. |
| SAS Control Module | Behind lower center of dash. See Figure. |
| Sun Roof Control Module | At center front of roof. |
| TCM | Behind left side of dash. See Figure. |
| Theft-Deterrent Control Module | Under front of center console. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.