Electronic boost control installed - fault light triggered?

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

Moderator: Moderators

Post Reply
cthulhu
1.8 16v
Posts: 53
Joined: Wed Oct 17, 2007 3:23 pm
Location: Devon

Electronic boost control installed - fault light triggered?

Post by cthulhu »

I finally got around to installing my new electronic boost controller on my 406 turbo exec over the long weekend (a very cool unit which lets me not only control peak boost but define the shape of the boost curve, and has two maps) which obviously meant disconnecting the boost control solenoid from the ECU to wire it up to my project. But now I've got a fault light, which I guess makes sense as if the ECU can't see the solenoid it must think there is no boost control?

Anyway, someone else on here must have done a similar thing before. Is that most likely why I'm getting a check engine light? If I wire a high wattage resister across the old wires with the same impedance as the solenoid will that fool the ECU, or should I turn to the scrapyard to find another solenoid to use as a dummy?

And no, before anyone asks, I'm not boosting anywhere near 1 bar so the fault light isn't because I'm exceeding the map sensor resolution. :cheesy:
User avatar
jameslxdt
3.0 24v
Posts: 2512
Joined: Wed Apr 26, 2006 9:30 pm
Location: London, on me bike
Contact:

Re: Electronic boost control installed - fault light triggered?

Post by jameslxdt »

you need the solenoid connected to the wiring harness, and the pipes on to your EBC, what controller is it, i need one for the passat
Peugeot wrote:what are you worried about? we made car that lasted 10 years"..."Zat is very goode non? :|
FAQ - 406 D8 petrol (excl. V6) running and starting problems
cthulhu
1.8 16v
Posts: 53
Joined: Wed Oct 17, 2007 3:23 pm
Location: Devon

Re: Electronic boost control installed - fault light triggered?

Post by cthulhu »

It's one of these. You need to be friendly with a soldering iron though :) and you'll need one of these to tune it.

See article here and here
cthulhu
1.8 16v
Posts: 53
Joined: Wed Oct 17, 2007 3:23 pm
Location: Devon

Re: Electronic boost control installed - fault light triggered?

Post by cthulhu »

Well had to answer my own question on this one. Since I'd scavenged the factory solenoid for my EBC the ECU couldn't see a load across the wires the solenoid used to be connected to. A multimeter revealed the resistance of the solenoid coil to be about 28ohm, and a trip to Maplins yielded a 10W 33ohm resistor as the closest match. With this wired in place the fault light has cleared and I'm happily making about 12psi in every gear. Yay for electronics. And it passed an emissions test today too.
Post Reply