As a dedicated Can-Am enthusiast, you understand the importance of keeping your machine in top condition. Like many, you may have wondered if it’s possible to use standard automotive diagnostic tools, specifically OBD2 scanners, to communicate with your Can-Am’s engine management system. The ability to read and clear service messages, diagnose error codes, and monitor vital parameters without relying solely on dealership services would be a significant advantage for any owner. This article dives into the initial exploration of Can-Am OBD2 compatibility, based on hands-on investigation and technical findings.
Early research indicates that Can-Am’s Electronic Control Module (ECM) utilizes the KWP2000 protocol. In the automotive world, KWP2000 is recognized as a variation of ISO9141, a protocol commonly supported by many readily available OBD2 scan tools. Interestingly, Can-Am documentation sometimes refers to its diagnostic communication lines as “CAN lines,” which could suggest a different protocol altogether, adding a layer of complexity to the investigation.
To bridge the gap between standard OBD2 tools and the Can-Am diagnostic port, a wiring configuration was devised based on automotive OBD2 pinouts and the Can-Am’s 6-pin connector. The initial wiring attempt mapped the pins as follows:
OBD2 Plug to Can-Am Plug Wiring Configuration:
- Pin 16 (OBD2) to Pin 5 (Can-Am): Battery Positive (+)
- Pin 4 (OBD2) to Pin 3 (Can-Am): Battery Negative (-)
- Pin 7 (OBD2) to Pin 6 (Can-Am): ISO9141 K-line (Communication)
- Pin 15 (OBD2) to Pin 1 (Can-Am): ISO9141 L-line (Communication)
However, the Can-Am connector presents a fifth wire, adding a degree of uncertainty. This wire runs through a resistor within the connector cover and appears to connect Pin 1 and Pin 2 within the Can-Am plug itself. In initial testing, wiring only the four identified connections resulted in a momentary connection to the ISO 9141 protocol, quickly followed by a “cannot communicate with vehicle” error message from the scan tool. Reversing the two communication wires (ISO 9141 K and L lines) yielded the same unsuccessful result.
Further experimentation involved tapping into the unknown fifth wire, specifically bridging the Brown/Green wire with the White/Brown wire (Can-Am Pins 1 and 2). This modification led to a “communication error” message displayed on the Can-Am speedometer, yet the OBD2 scanner still failed to establish a connection.
Adding another layer of automotive diagnostic considerations, OBD2 connectors typically include both a “chassis ground” and a “signal ground.” The potential role of these different ground connections in establishing a stable communication link with the Can-Am ECM remains an open question.
This initial foray into Can-Am OBD2 diagnostics highlights the complexities involved. Unlocking DIY diagnostic capabilities for Can-Am vehicles requires further investigation and collaborative problem-solving. Sharing these preliminary findings aims to encourage discussion and potentially uncover solutions, moving closer to a future where Can-Am owners can confidently utilize standard OBD2 tools for vehicle maintenance and troubleshooting.
