Mazda ECU Modules and Addresses

Observations from the map

The Mazda map ranks 18 with 35 definitions; the largest module types are: ecu_module (5), high-voltage system modules (4), adaptive cruise control module (3).

35 of the addresses use 11-bit CAN identifiers and 0 use 29-bit identifiers. 1 definitions have scan priority 1; priority decides which module a scan starts from.

The map contains 4 safety-critical module definitions (ABS/brakes and airbag). Opening a diagnostic session on these can turn on a warning lamp; the vehicle must not be driven during the operation.

Modules in the map

Module name	Type	Address	Response	Priority
PCM (Powertrain)	Engine Control Unit	`7E0`	`7E8`	1
TCM (Transmission)	Transmission Control Unit	`7E1`	`7E9`	2
ABS / DSC safety-critical	ABS / ESP Module	`760`	`768`	3
Instrument Cluster	Instrument Cluster	`720`	`728`	5
BCM (Body Control)	Body Control Module	`726`	`72E`	6
Gateway / PCM proxy	Gateway Module	`723`	`72B`	7
PSCM (EPS)	Steering Module	`730`	`738`	20
IPMA (Front Camera)	Camera Module	`706`	`70E`	21
Forward Radar / MRCC	Adaptive Cruise Control Module	`764`	`76C`	22
Radar Distance	Adaptive Cruise Control Module	`793`	`79B`	23
Motor / Inverter	High-Voltage System Modules	`725`	`72D`	24
DC-DC Converter	High-Voltage System Modules	`746`	`74E`	25
HV Battery (cells)	High-Voltage Battery Module	`747`	`74F`	26
OBC (Charger MX-30)	Charger Module	`7E2`	`7EA`	27
HV Battery	High-Voltage Battery Module	`7E4`	`7EC`	28
Primary Motor / Inverter	High-Voltage System Modules	`7E6`	`7EE`	29
Secondary Motor	High-Voltage System Modules	`7E7`	`7EF`	30
HV Charge Limits	Charger Module	`6F5`	`6FD`	31
SRS/Airbag safety-critical	Airbag / SRS Module	`737`	`73F`	32
Parking brake safety-critical	Brake Control Module	`756`	`75E`	33
4WD	AWD / Transfer Case Module	`761`	`769`	34
Adaptive headlights	Adaptive Cruise Control Module	`734`	`73C`	35
Rear door	Door Module	`775`	`77D`	36
Driver seat	Seat Module	`744`	`74C`	37
Multimedia	Audio / Multimedia Module	`784`	`78C`	38
Amplifier	Audio / Multimedia Module	`7AC`	`7B4`	39
Access system	—	`731`	`739`	40
DCM	—	`754`	`75C`	41
Steering Angle Sensor	Sensor Modules	`7B3`	`7BB`	42
Powertrain (OBD)	—	`7D2`	`7DA`	43
Powertrain (OBD)	—	`7E3`	`7EB`	44
PCM (Enhanced/Mazda)	Engine Control Unit	`700`	`708`	45
DSC / Dynamics safety-critical	ABS / ESP Module	`7B0`	`7B8`	46
Fuel / Battery Monitor	—	`7C0`	`7C8`	48
A/C / Climate	Climate Control Module	`7C7`	`7CF`	49

← ECU maps by make

See the modules in your vehicle

With an ELM327-based BLE OBD2 adapter, CarCoding scans the vehicle’s modules, reads fault codes from those it can reach and explains every code in plain language. Which modules are reachable depends on the make and on the vehicle. The app is free to download.

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Some advanced features require an in-app purchase.

Data source: the CarCoding ECU scan map (ecuDatabase.ts). The addresses and names in the table are definitions from the map; they can differ depending on the hardware and software version in your vehicle.

Disclaimer: This page offers general information and does not replace an inspection by a qualified workshop. Any work carried out on the vehicle is your own responsibility.