Not cranking & Code 12. Options

[Takumi-FujiWaraS...]

94 ST 5spd.

I'm having a issue car won't crank, so far i have check power/grounds, fuses, clutch safety switch all were good. I notice the fuel pump will only prime if you're trying to start the car (Key turned all the way), other than that i can roll start it and it pure like a kitten and pulled the codes and got 12 (Which i can't find codes anywhere), but car has no light on while it's running.

This is my dd and i need it up and going soon, until then i hate to but will roll start it when needed.

[95CelicaST]

Could be. The ECU checks for this signal from the ignitor when the ignition switch is in the start position. If the starter doesn't turn because there is a problem with the starting system, the ECU won't receive the RPM signal and can throw code 12.

Never had a bad starter throw a code on my old ST... and I went through two of them.

[Special_Edy]

Could be. The ECU checks for this signal from the ignitor when the ignition switch is in the start position. If the starter doesn't turn because there is a problem with the starting system, the ECU won't receive the RPM signal and can throw code 12.

Never had a bad starter throw a code on my old ST... and I went through two of them.

This was my thinking exactly. Sometimes I get a code 12 myself even though I replaced my distributor not long ago. No starting or ignition issue has manifested itself so I just ignore it and it goes off until the next rare occurance.