My apologies if this isn't the right forum to post this.
I recently purchased an 07 Grand Prix with the base 3800 engine. The car's showing a P0449 code. I replaced the EVAP vent unit and it's still there.
Here's where the plot thickens. I don't have schematics, so I'm like a blind man poking around.
If everything I've looked up so far is correct, there should be voltage at the vent solenoid at all times. I have no voltage at the vent solenoid.
Does the vent run through the same fuse as the canister? I have voltage at the fuse box at the 10 amp canister fuse.
I figure this system doesn't look too complicated. From what I've read, the PCM sends a signal to a driver that grounds multiple components. The EVAP vent being one of them.
So my big questions are:
1. How and in what order is this system wired?
2. Was my research correct and the EVAP vent should have constant voltage going to it?
3. Where are the components located? The PCM, driver, and anything else?
Any info. would be greatly appreciated.
Thank You
JArkayman
