Fiat ECU Modules and Addresses

Observations from the map

The Fiat map ranks 9 with 85 definitions; the largest module types are: ecu_module (10), door module (7), airbag / srs module (5).

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

The map contains 9 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
ECM (Engine)	Engine Control Unit	`7E0`	`7E8`	1
TCM (Transmission)	Transmission Control Unit	`7E1`	`7E9`	2
Hybrid Control Processor	High-Voltage System Modules	`7E2`	`7EA`	3
Electronic Brake Booster safety-critical	Brake Control Module	`7E3`	`7EB`	4
Engine (29-bit)	Engine Control Unit	`18DA10F1`	`18DAF110`	30
ABS (29-bit) safety-critical	ABS / ESP Module	`18DA28F1`	`18DAF128`	31
EPS (29-bit)	Steering Module	`18DA30F1`	`18DAF130`	32
Instrument Cluster (29-bit)	Instrument Cluster	`18DA60F1`	`18DAF160`	33
SRS / Airbag (29-bit) safety-critical	Airbag / SRS Module	`18DAC0F1`	`18DAF1C0`	34
Security Gateway	Gateway Module	`47E`	`47F`	35
Body computer	Body Control Module	`620`	`504`	36
Radio Frequency HUB	Immobiliser / Alarm Module	`740`	`4C0`	37
Instrument Panel Cluster	Instrument Cluster	`742`	`4C2`	38
Tire Pressure Control Module	Tyre Pressure (TPMS) Module	`743`	`4C3`	39
DTCM (29-bit)	AWD / Transfer Case Module	`18DA1AF1`	`18DAF11A`	40
Occupant Restraint Module (Airbag) safety-critical	Airbag / SRS Module	`744`	`4C4`	40
FFCM (29-bit)	Camera Module	`18DA31F1`	`18DAF131`	41
ABS Bosch/Continental/Teves/TRW PowerNet safety-critical	ABS / ESP Module	`747`	`4C7`	41
ESM Electronic Shifter (29-bit)	Transmission Control Unit	`18DA1FF1`	`18DAF11F`	42
Drive train control module	AWD / Transfer Case Module	`74B`	`4CB`	42
RFH RF Hub (29-bit)	Immobiliser / Alarm Module	`18DAC7F1`	`18DAF1C7`	43
Electronic Pedestrian Protection Module safety-critical	Airbag / SRS Module	`75F`	`4DF`	43
OCM Occupant Classification (29-bit) safety-critical	Airbag / SRS Module	`18DA58F1`	`18DAF158`	44
Parktronics Module	Park Assist Module	`762`	`4E2`	44
AHLM Headlamp Leveling (29-bit)	Lighting Module	`18DA71F1`	`18DAF171`	45
Steering Column Control Module	Steering Module	`763`	`4E3`	45
SCCM Steering Column (29-bit)	Steering Module	`18DA86F1`	`18DAF186`	46
Auxiliary Hybrid Control Processor	High-Voltage System Modules	`76C`	`4EC`	46
ESL Steering Lock (29-bit)	Immobiliser / Alarm Module	`18DAC4F1`	`18DAF1C4`	47
HVAC (Heat, Ventillation and Air Conditioner)	Climate Control Module	`783`	`503`	47
PTU Power Transfer Unit (29-bit)	AWD / Transfer Case Module	`18DA1DF1`	`18DAF11D`	48
Driver Door Module (DDM)	Door Module	`784`	`504`	48
RDM Rear Drive Module (29-bit)	AWD / Transfer Case Module	`18DA1EF1`	`18DAF11E`	49
Passenger Door Module (PDM)	Door Module	`785`	`505`	49
PAM Park Assist (29-bit)	Park Assist Module	`18DAA0F1`	`18DAF1A0`	50
Intrusion control module (ITM)	Immobiliser / Alarm Module	`78F`	`50F`	50
EPB (29-bit) safety-critical	Brake Control Module	`18DA2BF1`	`18DAF12B`	51
Heated Seat Module (HSM)	Seat Module	`792`	`512`	51
DCU Dosing Control (29-bit)	—	`18DA01F1`	`18DAF101`	52
AHCP (29-bit)	High-Voltage System Modules	`18DA12F1`	`18DAF112`	53
MCPB Motor Control B (29-bit)	High-Voltage System Modules	`18DA15F1`	`18DAF115`	54
Integrated Center Stack (ICS)	Navigation Module	`7BC`	`53C`	54
BPCM Battery Pack (29-bit)	High-Voltage Battery Module	`18DA44F1`	`18DAF144`	55
Audio Amplifier	Audio / Multimedia Module	`7BE`	`53E`	55
Module (29-bit)	—	`18DA18F1`	`18DAF118`	56
HCP Hybrid Control (29-bit)	High-Voltage System Modules	`18DA4BF1`	`18DAF14B`	56
BCM (29-bit)	Body Control Module	`18DA40F1`	`18DAF140`	57
APM Adjustable Pedal (29-bit)	Body Control Module	`18DA4CF1`	`18DAF14C`	57
IDCM (29-bit)	—	`18DA50F1`	`18DAF150`	58
TBM Telematics (29-bit)	Telematics Module	`18DAC6F1`	`18DAF1C6`	59
SGW Security Gateway (29-bit)	Gateway Module	`18DACBF1`	`18DAF1CB`	60
Wireless Control Module (WCM)	—	`600`	`500`	61
Steering Angle Sensor	Sensor Modules	`622`	`484`	62
Sunroof module (SUNR)	Roof Module	`638`	`507`	64
Driver Door Module (DDM)	Door Module	`640`	`508`	65
Rear Left Door Module	Door Module	`648`	`509`	66
Passenger Door Module (PDM)	Door Module	`650`	`50A`	67
Rear Right Door Module	Door Module	`658`	`50B`	68
Memory Seat Driver Module	Seat Module	`660`	`50C`	69
Rear Right Power Sliding Door Module (PSDMR)	Door Module	`680`	`510`	71
HVAC (Heat, Ventillation and Air Conditioner)	Climate Control Module	`688`	`511`	72
Parktronics Module	—	`698`	`513`	74
Instrument Cluster/Cabin Compartment Node (CCN)	Instrument Cluster	`6A0`	`514`	75
Radio Navigator module	Audio / Multimedia Module	`6B0`	`516`	76
Right Blind Spot Sensor Module	Driver Assist and Safety Modules	`6B8`	`517`	77
Heated Seat Module (HSM)	Seat Module	`6D8`	`51B`	78
Occupant Restraint Module (Airbag) safety-critical	Airbag / SRS Module	`6E0`	`51C`	79
Automatic High Beam Module	—	`710`	`522`	80
Power LiftGate module	Tailgate Module	`728`	`525`	81
Electronic Shifter Module	Transmission Control Unit	`749`	`4C9`	82
Adaptive Cruise Control	Adaptive Cruise Control Module	`753`	`4D3`	83
Active Damping Control Module	—	`757`	`4D7`	84
Electric Power Steering Module	Steering Module	`75A`	`4DA`	85
Forward Facing Camera Module	Camera Module	`764`	`4E4`	86
Adaptive Front Lighting System (AFLS)	Adaptive Cruise Control Module	`768`	`4E8`	87
Vehicle Entertainment, Last Row (VES3)	—	`780`	`530`	88
Electronic Shifter Module	Transmission Control Unit	`788`	`789`	89
Right Blind Spot Sensor (RBSS)	Driver Assist and Safety Modules	`799`	`519`	92
DVD module	—	`7A0`	`534`	93
All Wheel Drive module (AWD)	AWD / Transfer Case Module	`7B6`	`7B7`	94
Hands Free Module (HFM)	—	`7B9`	`539`	95
Radio Navigator module	Audio / Multimedia Module	`7BF`	`53F`	96
Vehicle Entertainment, Second Row (VES2)	—	`7D0`	`53A`	98
Tire Pressure Control Module	Tyre Pressure (TPMS) Module	`7DA`	`7DB`	99
ACC (29-bit)	Adaptive Cruise Control Module	`18DA2AF1`	`18DAF12A`	100

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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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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.