openCAN (AA Spec)

Ordered in AA spec, openCAN is a drop-in solution for OEM fan control on the 2.7t motor. It reads coolant temp and A/C status directly off CANBUS and drives the radiator/aux fans the way Audi intended.

openCAN also adapts Cruise Control for the 2.7t. No modification to the original stalk. Set, Accelerate, Retard, Cancel, Resume all work as intended.

openCAN is a SAMD21-based dual-CAN board. In AA spec, it ships in an enclosure with the same 9-wire pigtail as the original ArduAudi, for drop-in installation.

By integrating openCAN in your swap you get a simpler swap harness, the powerful and efficient stock fans, and the convenience of cruise control, on hardware you can reflash and extend later. See the full openCAN platform →

Installation is easy and requires connection of 9 wires all of which are accessible inside the ECU plenum. The device can be fit above the fuse box in the dash. 

There are no buttons, activation, or programming necessary. Once all connections are made the device works.

All openCAN (AA spec) connections are clearly labeled and color coded. Reference diagrams for APB and BEL 2.7ts as well as all B6/B7 body diagrams are available in the Installation Guide.

openCAN (AA spec) IS UNIVERSAL AND ALL FEATURES WILL WORK ON ALL B6/B7 APB and BEL 2.7T SWAPS.

Fan Control: The OEM fan(s) and OEM fan controller(s) must be installed and the fan harness should be unmodified. Coolant temp should also be registering on the cluster.

To test if fans are ready and working:

• Turn key to ignition on (No need to Start motor)

• Wait 5 to 10 seconds

• Check if OEM fans are running on high and staying on

If your fans turn on with the OEM harness and controller in place, and you are registering coolant temp on your cluster, then your setup is ready for openCAN (AA spec) installation. If not check fuses, battery, OEM fan wiring harness continuity, OEM fan controller, and your custom wiring harness. A multi-meter will help to diagnose these issues.

Cruise Control: Cruise control relies on brake switch, clutch switch, and speed sensor in order to work. Cruise control will not work if there is a communication issue with any of these systems. Cruise signals can be monitored through VAGCOM on ECU channel 66 will display the status of clutch, brake, and speed sensor for troubleshooting needs. Channel 66 can also be used to confirm openCAN (AA spec) is sending the correct signals to the ECU.

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