AIM EV0 4, Formula steering wheel and fueltech ECU

[rmontana]

First, Iintroduce my self. I live in Santiago, Chile. I drive a Formula car, Chasis TITO 02, with nissan 1600 cc engine and Fueltech ECU.
I just bought an Evo 4 and a formula steering wheel to connect with my FT300 Fueltech ECU.
I made all the connections, the EVO to the battery and ground, to my Ecu with the Can cable, can + and can - connected in the recommended position, and in the 5 pin labeled ecu. The steering wheel in the labeled Exp. The steering wheel lights on, but I can`t see the RPM, or the oil pressure or the engine temperature. Its seems that the EVO 4 doesn´t read the ECU.
I configurated the EVO4 with the race studio 2, told to him that my ECU is Fueltech with CAN connection, activated the datalogging in the ECU and connect the AIM CAN cable with the pinout from the manual.
Any ideas? What am I doing wrong?
Regards
Rodrigo

[mikey]

The ECU data stream might need to be set to a different baud rate. FE cars had to have their ECUs flashed to work with AIM.

[rmontana]

Thanks. How can I set the proper baud rate?

[David Ferguson]

According to the AiM instructions for the ECU (found here: http://www.aim-sportline.com/downloa...00_100_eng.pdf ), the Fueltech FT300 should be sending data on the CAN bus.

Is there any chance you removed the terminating resistor in the ECU CAN cable for the EVO4 (ie, did you shorten the cable below the "lump" that has the resistor)? The CAN bus will certainly need a 100 - 120 ohm terminating resistor across the CAN lines.

Also, it's always worth swapping CAN+ & CAN- for a test, it seems that many times the documentation is wrong regarding this -- if that doesn't fix it, put it back to what the documentation says.

[rmontana]

Yes, the can port seems ok, because I can connect the ECU to the laptop and to the ecu manager software, all the parameters are ok, I see RPM, pressures, etc online.
The AIM can cable is with the 120 ohm resistor ok.
I did connect the can + can - cable inverted, uncussesfully.

[rmontana]

After a few months, I bought the Fueltech ft 400 ECU, And the Evo 4 comunícate flawless. The ft 300 has a protocol that aim Evo 4 can't read. The aim and Fueltech technical support didnt know that. I'm happy now, learning about data analisys, installing sensors and improving my lap times.
Regards