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
Module Table
MODULE DESCRIPTION
| M-MDS display name | Applicable module |
|---|---|
| ADD | Active driving display |
| ALH/AFS/ALV | Adaptive front lighting system (AFS) control module |
| Adaptive LED headlights control module | |
| Auto leveling control module | |
| BCM | Body control module (BCM) |
| CCU | Climate control unit |
| CMU | Connectivity master unit (CMU) |
| Audio control unit (ACU) | |
| DASH_ESU | Dash-electrical supply unit |
| DCDC | DC-DC converter (Mazda M Hybrid) |
| DMC | Driver monitoring camera unit |
| DOOR_ESU_D | Door-electrical supply unit (driver-side) |
| DOOR_ESU_P | Door-electrical supply unit (passenger-side) |
| DSC | DSC HU/Control Module |
| Electronically controlled brake unit | |
| EPS | Electric power steering (EPS) control module |
| ESU | Electrical supply unit (ESU) |
| FR | Front radar sensor |
| FSC | Forward sensing camera (FSC) |
| FSRL | Front side radar sensor (LH) |
| FSRR | Front side radar sensor (RH) |
| IC | Instrument cluster |
| ISG | Integrated starter generator (ISG) |
| LCML | Light control module (LH) |
| LCMR | Light control module (RH) |
| LFU | LF control unit |
| MHB | Mazda M Hybrid battery |
| PAU | Parking assist unit (ultrasonic) |
| PCM | PCM |
| RSRL | Rear side radar sensor (LH) |
| RSRR | Rear side radar sensor (RH) |
| SAS | SAS control module |
| TCM | TCM |
| TCU | Emergency call unit |
| Telematics communication unit | |
| VCM | Vehicle control module |
| VMC | Parking assist unit (optical) |
| 360° view monitor control module | |
| *: A module with the PID/data monitor function differs depending on the specifications. | |
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.
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