Volvo has introduced a new diagnostic connector style on their chassis with Volvo engines starting from 2013. While maintaining the standard J1939 9-pin Deutsch connector for Volvo chassis paired with Cummins engines, this new interface adopts an OBD2 style connector. This change presents a challenge for technicians and vehicle owners accustomed to standard J1939 diagnostic tools and accessories. This is where the J1939 Connector To Obd2 adapter becomes essential.
This adapter is specifically designed to bridge the gap between Volvo’s new OBD2 style diagnostic port and standard J1939 diagnostic equipment. The new Volvo connector is more complex, featuring two separate CAN channels – one for ISO15765 and another for J1939 – alongside J1708 within the same connector. However, this J1939 to OBD2 adapter simplifies the process by tapping into Channel 2, which carries the standard J1939 protocol.
With this adapter, you can seamlessly use your existing J1939 testers, scan tools, GPS units, and other J1939 compatible heavy equipment accessories with these newer Volvo vehicles. It effectively translates the new Volvo OBD2 style connector back to the universally recognized J1939 standard, ensuring compatibility and ease of use.
To understand its functionality, let’s examine the pinout of the new Volvo diagnostic connector and the wiring connections of the adapter:
| Pin Number (Volvo) | Signal |
|---|---|
| 3 | J1939+ |
| 5 | GND |
| 6 | ISO15765+ |
| 11 | J1939- |
| 12 | J1708+ |
| 13 | J1708- |
| 14 | ISO15765- |
| 16 | BATTERY |
And here are the wiring connections that the adapter facilitates:
| Volvo Connector Pin | Signal | J1939 Connector Pin |
|---|---|---|
| 5 | Ground | A |
| 16 | Battery | B |
| 3 | J1939-H | C |
| 11 | J1939-L | D |
| 12 | J1708+ | F |
| 13 | J1708- | G |
In conclusion, the J1939 connector to OBD2 adapter is an indispensable tool for anyone working with Volvo trucks manufactured from 2013 onwards, especially when using standard J1939 diagnostic equipment. It simplifies the transition to the new Volvo connector style, ensuring your diagnostic and telematics tools remain compatible and functional, saving time and resources in vehicle maintenance and diagnostics.
