Mod Description
The wiring connections to and from the OBD (Data Link Connector).Mod Details
PremiumNo Difficulty
Mod ID405
CreditEvilution
For
Linkhttps://www.evilution.co.uk/mod/450-obd-pin-out.htm Copy to ClipboardOBD Socket Location
600cc smart – on the visible side of the fuse box under the dashboard.
700cc smart – in the cubby hole nearest the door on the driver’s side.
The 700cc 450 has a flap down cover that protects the socket.
700cc Smart Fortwo
The table below shows the connections to and from the OBD. It shows that each controller has its own diagnostics line which is used by
the Mercedes Star Machine or the 3rd party Win-star system.
| Pin 1 | SAM unit connection 9, pin 3. Diagnostics |
| Pin 2 | No connection |
| Pin 3 | ECU pin 102. TNA |
| Pin 4 | Negative earth |
| Pin 5 | Negative earth |
| Pin 6 | No connection |
| Pin 7 | ECU pin 110. K-line, Diagnostics |
| Pin 8 | Switched live, fuse 20 |
| Pin 9 | ESP unit pin 11. Diagnostics |
| Pin 10 | No connection |
| Pin 11 | Steering assist unit, connection B, pin 2. Diagnostics |
| Pin 12 | Restraint systems/Airbag controller pin 9. Diagnostics |
| Pin 13 | No connection |
| Pin 14 | No connection |
| Pin 15 | No connection |
| Pin 16 | Permanent live, fuse 11 |
So you’ll notice that although there is a standard K-line connection for diagnostics, there are separate connections to the SAM, ECU, Steering assist unit ESP controller and the Airbag controller. These will be what the smart diagnostics machine (MB Star) will communicate through instead of going via the K-line.The G1 smart uses ISO 14230-4 to transmit data to the OBD.