OBD-dat
https://github.com/Edragon/OBD == Repository unavailable due to DMCA takedown.
CAN-dat - K-line-dat - OBD-dat
ELM327
scanmaster ELM
OBD-II Pinout (SAE J1962 Connector)
| PIN | DESCRIPTION | |
|---|---|---|
| 1 | Vendor Option |
|
| 2 | J1850 Bus + | |
| 3 | Vendor Option |
|
| 4 | Chassis Ground | Power |
| 5 | Signal Ground | Power |
| 6 | CAN (J-2234) High | |
| 7 | ISO 9141-2K-Line | |
| 8 | Vendor Option |
|
| 9 | Vendor Option |
|
| 10 | J1850 BUS | |
| 11 | Vendor Option |
|
| 12 | Vendor Option |
|
| 13 | Vendor Option |
|
| 14 | CAN (J-2234) Low | |
| 15 | ISO9141-2Low | |
| 16 | Battery Power | Power |
OBD stands for On-Board Diagnostics. It's a system in modern vehicles that monitors the engine and other vehicle systems. When it detects a problem, it turns on the "check engine" or "service engine soon" light on your dashboard and stores a diagnostic trouble code (DTC) that identifies the issue. This helps technicians diagnose and repair problems more easily.
the pins in the OBD-II connector related to J1850 are:
Pin 2 (SAE J1850 Bus+): Carries the signal for both PWM and VPW protocols. Pin 10 (SAE J1850 Bus-): Used only for the PWM protocol (Ford).