Nigel Allen
02-03-2022, 01:11 AM
The gen 1 Coyote was not offered with a malfunction indicator lamp (MIL) output from the ECU. As such I do not know if I have a fault unless I plug a reader into the OBD port. I am hoping that someone on this forum might have the experience to write software on an Arduino microcontroller that can interface to the CAN bus and in turn drive a relay to give a MIL indication.
Building on this, I see a benefit for all people on the forum with an engine running an ECU. If some other points on the CAN are able to be monitored, such as oil pressure and engine temperature, it would not be difficult to configure these to drive a relay to bring on a warning light or buzzer on the dash to indicate high temp or low oil pressure conditions. After all, with a bit of spirited driving who has time to look at the gauges? This would make a excellent engine watchdog.
My (very) basic understanding of the automotive CAN standard is that the addresses for the above-mentioned points are standardised across late model engines. If an Arduino microcontroller is used, then the rest of the 'building blocks', such as CAN interface and relay modules are available off of the shelf.
This might be a great winter project for someone with the right knowledge. I would be happy to support it in anyway I can. Feel free to PM me.
Cheers,
Nigel
Building on this, I see a benefit for all people on the forum with an engine running an ECU. If some other points on the CAN are able to be monitored, such as oil pressure and engine temperature, it would not be difficult to configure these to drive a relay to bring on a warning light or buzzer on the dash to indicate high temp or low oil pressure conditions. After all, with a bit of spirited driving who has time to look at the gauges? This would make a excellent engine watchdog.
My (very) basic understanding of the automotive CAN standard is that the addresses for the above-mentioned points are standardised across late model engines. If an Arduino microcontroller is used, then the rest of the 'building blocks', such as CAN interface and relay modules are available off of the shelf.
This might be a great winter project for someone with the right knowledge. I would be happy to support it in anyway I can. Feel free to PM me.
Cheers,
Nigel