Hi guys my son just purchased a 2005 civic hybrid is really nice condition.

just has some issues he trying to resolve

abs light and red brake light is on and air bag too and cruise control don’t work

He tried to use his launch scanner but the modules won’t connect to them says no communication


can someone help point him into some direction to start diagnosing it


T hanks for any help

 

Good luck with electrical issues. Realize that you are no longer working on a car, you are working on a computer. Get a service manual for the car (available online) and start tracing through the circuits. You may have blown fuses, bad relays, frayed or broken wires, or most likely some combination of all three. After you spend a year or two tracing wires and relays move on to maybe a bad ECM or PCM (you will have no way to test if these units are good). Its easy to debug though, just plug in a new unit - they cost a couple of thousand dollars - and if you have a bad one everything will magically start working. If not, well, your kid probably didn't need that college money anyway.

As for the SRS: Think of working on a bomb, that is essentially what the airbag system is. If you trip the wrong wire, BOOM! and if you're unlucky enough to be in the way of the airbag you may be seriously injured. Before working on the SRS system unhook both negative and positive battery wires and tie them together using a zip tie. Go have a sandwich or something for a half hour at least, and don't power it back up until you're done tracing down SRS wires.

Or better yet, find someone who specializes in this kind of repair. I currently own two Honda cars, each of which has an SRS light on. They run just fine like that. I sent one of controllers off to a company to be cleared. When they returned it sure enough the permanent error was cleared but it had a different error. I spent $100 and still have an SRS light. So I'd advise you to just save your money and if the SRS light bothers you then sell the car and buy one that doesn't have that issue.

Personally I think the best fix for an SRS error is to remove the instrument cluster, get some black paint, and paint over the light.

Good luck. I just spent three months working on a Dodge truck with a relatively simple electrical issue (I have a Masters degree in Engineering). You definitely have a project on your hands!