Volvo introduced a new OBD2 style diagnostic connector in 2013 for Volvo chassis equipped with Volvo engines. While Volvo continues to use the standard J1939 9-pin Deutsch connector for Volvo chassis with Cummins engines, this new interface presents a different configuration. This new connector features dual CAN channels, utilizing ISO15765 on CAN channel 1 and J1939 on CAN channel 2, and also incorporates J1708 within the connector. This shift requires a specific understanding of the J1939 Obd2 Pinout for effective diagnostics and accessory integration.
This article delves into the pinout of this new Volvo OBD2 style diagnostic connector and explains how an adapter can bridge the connection with standard J1939 tools and accessories. This is crucial for technicians and operators working with Volvo vehicles to ensure compatibility with existing diagnostic equipment and J1939-based devices.
Decoding the Volvo OBD2 Style J1939 Connector Pinout
The key to working with this new Volvo connector is understanding its pinout. The j1939 obd2 pinout for Volvo is structured to accommodate multiple communication protocols within a single OBD2 style interface. Below is a detailed breakdown of the pin assignments:
| Pin Number | Signal |
|---|---|
| 3 | J1939+ |
| 5 | GND |
| 6 | ISO15765+ |
| 11 | J1939- |
| 12 | J1708+ |
| 13 | J1708- |
| 14 | ISO15765- |
| 16 | BATTERY |
This pinout reveals that pins 3 and 11 are dedicated to the J1939 CAN bus, while pins 6 and 14 handle the ISO15765 protocol. Pins 12 and 13 are assigned to J1708 communication, and pin 5 provides ground, with pin 16 supplying battery power. This configuration is distinct from standard OBD2 pinouts and necessitates specific adapters for J1939 connectivity.
Wiring Connections for J1939 Adapter
To utilize standard J1939 diagnostic tools or accessories with this new Volvo connector, an adapter is essential. This adapter effectively translates the j1939 obd2 pinout to the standard J1939 9-pin Deutsch connector. The following table outlines the wiring connections for such an adapter:
| Volvo (OBD2 Style) | Signal | J1939 (9-pin Deutsch) |
|---|---|---|
| 5 | Ground | A |
| 16 | Battery | B |
| 3 | J1939-H | C |
| 11 | J1939-L | D |
| 12 | J1708+ | F |
| 13 | J1708- | G |
By correctly wiring these connections, the adapter ensures seamless communication between standard J1939 devices and the Volvo OBD2 style connector. This is particularly useful for connecting J1939 testers, GPS units, and other heavy equipment accessories.
Applications and Benefits of the J1939 OBD2 Adapter
The primary benefit of this adapter lies in its ability to provide compatibility. It allows workshops and technicians to continue using their existing J1939 diagnostic tools on newer Volvo vehicles with the OBD2 style connector. Furthermore, operators can integrate standard J1939 accessories, such as telematics devices or GPS trackers, into these Volvo vehicles without needing to invest in new, connector-specific equipment.
This adapter simplifies the transition to the new Volvo diagnostic interface, ensuring that investments in J1939 equipment remain relevant and functional. Understanding the j1939 obd2 pinout and utilizing the correct adapter is crucial for efficient diagnostics and accessory integration in modern Volvo vehicles.
Exploring Similar J1939 Adapters
While this article focuses on the Volvo J1939 to OBD2 adapter, it’s worth noting that a range of similar adapters exist to address various J1939 and OBD2 connector configurations. These include adapters like:
- J1939 Female to OBD2 Female: For connecting OBD2 testers to J1939 vehicles.
- J1939 Male to OBD2 Male: For using J1939 scan tools on OBD2 equipped J1939 vehicles.
- GMC Top Kick M-M Adapter: Addressing specific needs for GMC Top Kick models with different engine types and data protocols.
- Hino Truck M-M Adapter: Facilitating J1939 tool connection to Hino trucks with OBD2 style connectors.
- Allison to J1939 Adapter: Addressing the unique pinout requirements of Allison transmissions in OBD2 style connectors.
These adapters highlight the diverse needs in heavy-duty vehicle diagnostics and the importance of understanding connector pinouts for effective equipment utilization.
If you require a specific configuration not listed, custom cable solutions are also available to meet unique diagnostic and connectivity needs.
