Observations from the map
The Volvo map ranks 8 with 101 definitions; the largest module types are: ecu_module (73), high-voltage battery module (3), transmission control unit (3).
41 of the addresses use 11-bit CAN identifiers and 60 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 |
|---|---|---|---|---|
| Engine (ECM) | Engine Control Unit | 7E0 | 7E8 | 1 |
| Transmission (TCM) | Transmission Control Unit | 7E1 | 7E9 | 2 |
| SRS (HS-CAN) / SRS safety-critical | Airbag / SRS Module | 737 | 73F | 3 |
| BCM | Body Control Module | 760 | 768 | 4 |
| PSCM | Steering Module | 730 | 738 | 5 |
| PBM (Parking Brake) safety-critical | Brake Control Module | 756 | 75E | 6 |
| BECM | High-Voltage Battery Module | 7E4 | 7EC | 7 |
| DCDC | High-Voltage System Modules | 746 | 74E | 8 |
| OBC | Charger Module | 753 | 75B | 9 |
| RDCM (Rear Differential) | AWD / Transfer Case Module | 7E7 | 7EF | 10 |
| 4WD/HALDEX | AWD / Transfer Case Module | 795 | 79D | 11 |
| TVM (Trailer/Top View) | Camera Module | 707 | 70F | 12 |
| PAM | Park Assist Module | 736 | 73E | 13 |
| DABM (Digital Radio) | Audio / Multimedia Module | 7D6 | 7DE | 14 |
| TAILGATE | Tailgate Module | 775 | 77D | 15 |
| CVM | — | 793 | 79B | 16 |
| CEM | — | 726 | 72E | 17 |
| FSM | — | 764 | 76C | 18 |
| PPM | — | 794 | 79C | 19 |
| DIM (HS-CAN) / DIM | — | 720 | 728 | 20 |
| SAS | — | 797 | 79F | 21 |
| ACCM | — | 7C7 | 7CF | 22 |
| ISC/ERAD | — | 745 | 74D | 23 |
| ISG | — | 747 | 74F | 24 |
| IAM (HS) / IAM | — | 727 | 72F | 25 |
| KVM | — | 731 | 739 | 26 |
| SODL | — | 7C4 | 7CC | 27 |
| SODR | — | 7C6 | 7CE | 28 |
| PAC | — | 7C1 | 7C9 | 29 |
| AUD | — | 7A4 | 7AC | 30 |
| ICM | — | 784 | 78C | 31 |
| PHM | — | 754 | 75C | 32 |
| DDM | — | 740 | 748 | 33 |
| PDM | — | 741 | 749 | 34 |
| PSM | — | 744 | 74C | 35 |
| CCM | — | 733 | 73B | 36 |
| CPM | — | 7E3 | 7EB | 37 |
| TRM | — | 791 | 799 | 38 |
| Engine (29-bit) | Engine Control Unit | 1DD01630 | 00000E80 | 39 |
| Powertrain (OBD) | — | 7E2 | 7EA | 39 |
| Transmission (29-bit) | Transmission Control Unit | 1DD01632 | 00000E80 | 40 |
| Powertrain (OBD) | — | 7E5 | 7ED | 40 |
| ABS (29-bit) safety-critical | ABS / ESP Module | 1DD01631 | 00000E80 | 41 |
| Powertrain (OBD) | — | 7E6 | 7EE | 41 |
| DEM (29-bit) | — | 1DD01638 | 00000E80 | 42 |
| SCL (29-bit) | — | 1DD01615 | 00000E80 | 43 |
| SUM (29-bit) | — | 1DD01614 | 00000E80 | 44 |
| AUD (29-bit) | — | 1DD01212 | 00000E80 | 45 |
| DIM (29-bit) | — | 1DD01801 | 00000E80 | 46 |
| DIM/BBS (29-bit) | — | 1DD01B51 | 00000E80 | 47 |
| IMS (29-bit) | — | 1DD01B52 | 00000E80 | 48 |
| CEM Central Electronic Module (29-bit) | Body Control Module | 1DD01A01 | 00000E80 | 49 |
| SWM (29-bit) | — | 1DD01B91 | 00000E80 | 49 |
| HUD (29-bit) | — | 1DD01841 | 00000E80 | 50 |
| BMS (29-bit) | High-Voltage Battery Module | 1DD01B61 | 00000E80 | 51 |
| CCD (29-bit) | — | 1DD01241 | 00000E80 | 52 |
| AGU (29-bit) | — | 1DD01203 | 00000E80 | 53 |
| OHC (29-bit) | — | 1DD01B22 | 00000E80 | 54 |
| OFM (29-bit) | — | 1DD01639 | 00000E80 | 55 |
| WAM (29-bit) | — | 1DD01431 | 00000E80 | 56 |
| RML (29-bit) | — | 1DD01416 | 00000E80 | 57 |
| RMR (29-bit) | — | 1DD01417 | 00000E80 | 58 |
| TACM (29-bit) | — | 1DD0163C | 00000E80 | 59 |
| VDDM (29-bit) | — | 1DD01601 | 00000E80 | 60 |
| TVM (29-bit) | Camera Module | 1DD01202 | 00000E80 | 61 |
| PAC (29-bit) | — | 1DD01221 | 00000E80 | 62 |
| DDM (29-bit) | — | 1DD01A12 | 00000E80 | 63 |
| PDM (29-bit) | — | 1DD01A13 | 00000E80 | 64 |
| POT (29-bit) | — | 1DD01A15 | 00000E80 | 65 |
| TRM (29-bit) | — | 1DD01A17 | 00000E80 | 66 |
| GSM (29-bit) | Transmission Control Unit | 1DD01661 | 00000E80 | 67 |
| IEM (29-bit) | — | 1DD01637 | 00000E80 | 68 |
| PSMD (29-bit) | — | 1DD01A14 | 00000E80 | 69 |
| PSMP (29-bit) | — | 1DD01A1A | 00000E80 | 70 |
| SODL (29-bit) | — | 1DD01432 | 00000E80 | 71 |
| SODR (29-bit) | — | 1DD01433 | 00000E80 | 72 |
| IHU (29-bit) | — | 1DD01201 | 00000E80 | 73 |
| OBC (29-bit) | Charger Module | 1DD01634 | 00000E80 | 74 |
| PSCM (29-bit) | Steering Module | 1DD01612 | 00000E80 | 75 |
| EGSM (29-bit) | — | 1DD01633 | 00000E80 | 76 |
| ESM (29-bit) | — | 1DD0163A | 00000E80 | 77 |
| VCM (29-bit) | — | 1DD01001 | 00000E80 | 78 |
| ASDM (29-bit) | — | 1DD01401 | 00000E80 | 79 |
| NRCM (29-bit) | — | 1DD0163D | 00000E80 | 80 |
| SAS (29-bit) | — | 1DD01616 | 00000E80 | 81 |
| IGM (29-bit) | — | 1DD01636 | 00000E80 | 82 |
| HCML (29-bit) | — | 1DD01BB3 | 00000E80 | 83 |
| HCMR (29-bit) | — | 1DD01BB4 | 00000E80 | 84 |
| BECM (29-bit) | High-Voltage Battery Module | 1DD01635 | 00000E80 | 85 |
| ABS #2 (29-bit) safety-critical | ABS / ESP Module | 1DD016A1 | 00000E80 | 86 |
| VCU #1 (29-bit) | High-Voltage System Modules | 1DD01602 | 00000E80 | 87 |
| BBM (29-bit) | — | 1DD01617 | 00000E80 | 88 |
| CCM (29-bit) | — | 1DD01A11 | 00000E80 | 89 |
| IHFA (29-bit) | — | 1DD01692 | 00000E80 | 90 |
| ISGM (29-bit) | — | 1DD01691 | 00000E80 | 91 |
| MVBM (29-bit) | — | 1DD016B1 | 00000E80 | 92 |
| MVCM (29-bit) | — | 1DD01681 | 00000E80 | 93 |
| GCCC (29-bit) | — | 1DD01D7E | 00000E80 | 94 |
| FIOC (29-bit) | — | 1DD01D08 | 00000E80 | 95 |
| HVBM (29-bit) | — | 1DD01D13 | 00000E80 | 96 |
| CDD (29-bit) | — | 1DD01650 | 00000E80 | 97 |
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.
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.