Injector power wire, where is it??

[invain]

I'm getting low voltage at the injector plugs, low enough for one cylinder to not fire at all. After checking everything else possible I'm pretty much 100% sure there's a bad connection where the main power line splits off to the 4 seperate injector wires. I just need to know where these connections are. I figure the main power wire splits off somewhere in the harness farily close to the injectors, but I wanted to make sure it's not some where else before I tear the harness apart.

[reinvent]

mind reader i must be.

[invain]

I know how the ecu grounds the injectors. All I need to find is the connection for the 12 volt source.

Where is this relay? Fuse box in the engine bay or down under the dash on the drivers side?

[reinvent]

cool. glad you know what you are doing.

[invain]

Well, we fixed the voltage problem, there was a short in the power wire for that injector and the connection back in the harness was pretty shitty too. 12 volts at the injector plug now, but it's still not firing. We've checked continuity for the ground wire back to the ecu for that cylinder and it was fine. We've tried 2 different ecu's as well to rule that out.

Now I'm back to thinking it's the CAS. However, I can't find any diagrams that show exactly which wires are for which cylinders. If anybody knows that'd be awsome.

[Rayne]

Got a copy of the FSM?

[invain]

Yeah just ran through the guide in the fsm and checked all the connections. No dice.

At this point I have no clue wtf is going on unless the cas is bad.

Can a malfunctioning cam position sensor cause only one cylinder to misfire? We checked all connections to the cas according to the fsm. We checked all connections to the injector. Fixed a small short in the power wire to injector 2 so it now shows the correct 12 volts. We've used two different ecu's with no change in cylinder 2.

[projectRDM]

Stupid question, but did you swap the injector? Try swapping plugs from another injector that you know is good, plug it in to the questionable one.

[invain]

Yep we've already tried swapping injectors.

[89dc240]

You figure this out?