Jump to content

Constant Trigger Errors and no Start.


Recommended Posts

Gidday all. I have a V1/2 WRX plugin ecu. Have been doing some work on my engine and all round setup, im trying to get the engine back up and running but am getting a constant trigger 1 error every revolution and am puzzled as to why. Have performed a trigger scope while cranking but im unsure how to read an oscilloscope. Cheers!




Link to comment
Share on other sites

Thats odd, you have the cam pattern coming through on trig 1 and the crank pattern coming through to trig 2, it should be the opposite.

Either someone has mixed the plugs up on the engine (I dont know subarus well enough to know if this is even possible) or the wiring is a bit different in this car for some reason.  If the wiring reaches either sensor and the plugs are the same then just swap the crank/cam wires.  If not then you can swap the signal wires at the ECU end on pins 38 & 53.

Link to comment
Share on other sites

Heres a pic of the early WRX crank & cam wheels.  Notice the crank goes 2 teeth, 1 tooth, 2 teeth, 1 tooth.    The cam goes 1T, 2T ,1T ,3T



The ECU triggers when a falling edge crosses over the zero volts line, I have marked on the pic below those trigger points with pink dots.  If you count them you will notice the 2,1,2,1 crank pattern is on the bottom.


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...