2005 Toyota Matrix Xr 175k mileage manual transmission
How can I test the ecm? There’s a recall on the ecm, but I kinda wanna see if that’s the problem. No start/no crank
new battery - starter- ignition switch- starter relay
The ECM is basically a computer. How do you test a computer? By using it. You dealer may have some diagnostics for it, but it will cost you.
If you want to see if your vehicle is included in the recall, you need to visit the USA Department of Transportation website. They have a tool where you can enter your car's VIN, and it will give you recall results:
If you're troubleshooting a no start problem, then start methodically with the simplest things first. Is the relay getting an ignition signal?
@mountainmanjoe
The starter relay is in a very hard to “test” area. What would you recommend for testing starter relay? The relay has been tested and works. Also, when I put the multi meter to the plug on the starter while turning the key I get nothing.
@mountainmanjoe
Yes car is on recall as needs to be fixed.
Sorry I don't know the specifics of the Toyota matrix. Is the relay in a fuse block under the hood? If so then maybe you can remove the relay and put your meter probe down into the slot. I would need to see a photo to be sure.
@mountainmanjoe
The starter relay is under the dash/driver side
ok so find out which terminal on the relay gets the ignition signal and stick your probe into that slot and turn the key.
You may need to get a Hanes manual or something with schematics.
If there is a recall on the ECM its not advisable to test it yourself. They could come back and claim that you broke the ECM testing it yourself. On all of the ECMs that I have seen the ECM case specifically states that opening the case voids any warranty it has just like other electronics you have used in your everyday life. The only way to test it is to take the case off and look for blow resistors and test the circuit board itself using a multimeter. It is strongly recommended you have a trusted technician do this work especially since it should be covered under the recall. In this rare instance I would take it to a dealer.
