BMW E46 330D 03 reg AMS

Ask any questions relating to the PicoScope hardware or kit contents here.
If you have any questions prior to purchasing the kit post them here.

BMW E46 330D 03 reg AMS

Postby Guest » Tue Sep 09, 2008 5:40 pm

Trying to scope air mass sensor on the above bmw, it has 4 pins plug but when i go to do the usual snap throttle test i've got no 1v siganl wire. All i can find is a square wave signal that increases in frequency under higer revs. Does anyone know how to test/ fault find on this system?
Many thanks

Postby Guest » Tue Sep 09, 2008 6:43 pm

Besides just looking at the pulse-train for basic signal integrity, my suggestion would require a known good example or specification. Basically, capture a pattern with it flowing as much air as it can, set up a measurement and look at max frequency. Compare to known good or spec.

It would also help to know why you are at the MAF anyway.

HTH. Later, Matt.

Return to Automotive kit hardware

Who is online

Users browsing this forum: No registered users and 0 guests