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
x: Applicable -: Not applicable
MODULE DESCRIPTION
| M-MDS display name | Self-test type | Applicable module | |||
|---|---|---|---|---|---|
| KOEO On-Demand self-test | KOER On-Demand self-test | KOEO On-Demand self-test for Door Lock System | KOEO On-Demand self-test for Lighting Systems | ||
| ALH/AFS/ALV | - | x | - | - | Adaptive front lighting system (AFS) control module |
| Adaptive LED headlights control module | |||||
| Auto leveling control module | |||||
| BCM | x | - | x | x | Body control module (BCM) |
| CMU | x | - | - | - | Connectivity master unit (CMU) |
| Audio control unit (ACU) | |||||
| DASH_ESU | - | x | - | - | Dash-electrical supply unit |
| DCDC | x | - | - | - | DC-DC converter (Mazda M Hybrid) |
| DMC | x | - | - | - | Driver monitoring camera unit |
| DSC HU/Control Module | x | - | - | - | DSC HU/Control Module |
| Electronically controlled brake unit | |||||
| EPS | x | - | - | - | Electric power steering (EPS) control module |
| FR | x | - | - | - | Front radar sensor |
| FSC | x | - | - | - | Forward sensing camera (FSC) |
| FSRL | x | - | - | - | Front side radar sensor (LH) |
| FSRR | x | - | - | - | Front side radar sensor (RH) |
| ISG | x | - | - | - | Integrated starter generator (ISG) |
| PAU | x | - | - | - | Parking assist unit (ultrasonic) |
| PCM (VIN 7/VIN L) | x | x | - | - | PCM (VIN 7/VIN L) |
| PCM (SKYACTIV-X) | x | x | - | - | PCM (SKYACTIV-X) |
| PCM (SKYACTIV-D) | x | x | - | - | PCM (SKYACTIV-D) |
| RSRL | x | - | - | - | Rear side radar sensor (LH) |
| RSRR | x | - | - | - | Rear side radar sensor (RH) |
| SAS | x | - | - | - | SAS control module |
| TCM | x | - | - | - | TCM |
| TCU | x | - | - | - | Emergency call unit |
| Telematics communication unit | |||||
| VCM | x | - | - | - | Vehicle control module |
| VMC | x | - | - | - | Parking assist unit (optical) |
| 360° view monitor control module | |||||
| *: Modules on which the on-demand self test can be performed differ depending on the specifications. | |||||
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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