Using Engine Fault Code to Trigger Certain Controls

[UVic Formula Racing]

We are using a Link Thunder for our Formula SAE car. Since we are using an electronic throttle we are required that our control system is able to conduct a plausibility check for when then E-throttle is longer matching the target. In the event that this happens the system needs to cut the power to the fuel and ignition system.

From reading the Link help manual all the ECU currently does is turn off the the power supply relay for the E-throttle and thus limit the engine speed using fuel cutting. Obviously this is not acceptable by our rules.

I looked into using a virtual auxiliary output to trigger on when Fault Code 75 occurs which would then feed into our custom made Power Distribution Unit to disable the output pins for the fuel and ignition systems. However, this does not seem possible. Any suggestions would be greatly appreciated.

[Adamw]

The ECU shuts off the E-throttle relay when there is an E-throttle fault.  Connect your injectors and ignition to the same relay will mean they are cut whenever there is an E-throttle fault.