HELP PLEEEASE!!! my yaris starts whenever I step on the clutch pedal.

[elcam84]

Well LOML drove the car today... Started up fine this morning. She voulnteers at the food pantry here and I stopped in a few minutes before she was about to leave.

Got in turned the key and it started to crank then everything went dead. No lights of any sort no dome light nothing. Battery is nearly new etc. I pulled the cover off the steering column and unplugged the ignition switch and as soon as I did the door open light on the dash came on and then when I put the key in the ign the key minder starting annoying me. Then plugged the ign switch back in and it started up fine and she got it home.

I downloaded some partial service manuals and wiring diagrams but they aren't the most complete in the world. So I'm digging through them to see what could cause it to die then come back by un plugging the switch. I used to be an ASE master but that was a few years ago... Toyota has really done some really goofy stuff in recent years in how they wire their cars.


Any thoughts or ideas are appreciated. Sorry for hijacking this thread but it was the closest I could find to the same symptoms. Right now I'm leaning towards a bad ECM. Changed out many of them in the 90s on many cars. And those were relatively easy to diagnose as a bad ECM.

[CTScott]

Originally Posted by elcam84

Well LOML drove the car today... Started up fine this morning. She voulnteers at the food pantry here and I stopped in a few minutes before she was about to leave.

Got in turned the key and it started to crank then everything went dead. No lights of any sort no dome light nothing. Battery is nearly new etc. I pulled the cover off the steering column and unplugged the ignition switch and as soon as I did the door open light on the dash came on and then when I put the key in the ign the key minder starting annoying me. Then plugged the ign switch back in and it started up fine and she got it home.

I downloaded some partial service manuals and wiring diagrams but they aren't the most complete in the world. So I'm digging through them to see what could cause it to die then come back by un plugging the switch. I used to be an ASE master but that was a few years ago... Toyota has really done some really goofy stuff in recent years in how they wire their cars.


Any thoughts or ideas are appreciated. Sorry for hijacking this thread but it was the closest I could find to the same symptoms. Right now I'm leaning towards a bad ECM. Changed out many of them in the 90s on many cars. And those were relatively easy to diagnose as a bad ECM.

Try reconnecting the wire. It may be a case where it detects that circuit not being present and it puts the ECM in an error state.

[Chuck G]

Scott, you're well worth whatever they pay you around here!