2010 mazda 3 and omega excalibur al 1830

Almost finished now. I had the blade reprogramed for the 3rd time. Don't know what car this gentleman was programming but I guess 3rd time is a charm. Last thing to do is install the hood pin and it done.

I have one question that is bugging me. Does anyone know why the remote start causes the check engine light to come on? If I reset the alarm and not use the remote start there is no problems. The problem is when I use the remote start function.

Have you wired ALL the wires at the ignition?

I believe I have but I am checking today.

I have gone through the connections and cant find any missing or incorrectly attached. I did find a pushed pin on the aftermarket cruise control that was connected to the diagnostic harness. I corrected that problem but it still turns the check engine light on after being reset. I have checked and rechecked the connections but cannot find an error. Any suggestions. I intend to have the error code read to see what its saying is wrong.

Just one note the cruise control is operational, and I tested it so I cant believe that it is a issue.

Ok well lesson learned. Nothing is wrong with the wiring or the system, just the operator. I have learned that if you do not program the two remotes for your system, the OEM alarm will turn on the check engine light. I went to the auto store to have them read the error code. Before I left I went back to program the remotes and when I started the car the light was extinguished! The ONLY thing I did was program the remotes.

After testing the system in a run to Indianapolis I found that the cruise control was dropping out as if I had hit the brakes. I know that the brake signal is used by both systems (cruise and remote start). Concerned that the remote start could be causing a problem I added a diode to eliminate any cross talk that might between the 2 systems. (the cruise control is a aftermarket add on also) We will monitor and test the system on the next long drive. No check engine lights any more. I did however learn that Advanced Auto did not have the latest in OBD2 readers. The one they had only covered autos up to 2008 and could not read mine.

Sorry I couldn't help you on this last part, I hope the diode part works but I can't see it, I would look to the power and ground of the c/control and it's tach pick-up if it has one. Yes you've just discovered that all car manufacturers unified and changed their specs on data connectors after 2008, now OBD lll.

I know that the cruse control worked properly prior to installation of the remote start, that's why I went with the diode on the brake. They both connect to the brake at the same point. Power is different connections. The cruse control connects the the fuse box and the remote connects to the ignition switch. Both connect to ground but at different points.