PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
That is entirely possible. As I wrote in my initial post, EGR has been Blanked and mapped out. The EGR Diaphragm does not hold vacuum.Do you think it could be caused by someone that messed with the software maps?
This throws a Manifold / Boost Pressure Sensor Signal Implausible fault at Ignition on. Won't Clear.
Engine not running I see 1306mB in measured values against 1020 mB atmospheric and desired. The Fault Code is accurate and Validated.
But.Bosch ESi (this is a Bosch ECU and Component) specifies MAP Voltage to be at 1.4 to 1.8v at Ignition On and at idle - Yes same figures ?? I guess it won't be boosting at idle ?? I have 1.4v with 3 Boost pressure sensors - Original, Customer replacement and Mine from the dealer ( Sealed Package )
Used Sensor Simulator to manipulate values below and above "Desired" ECU reaction is confirmed as Good. Dial it to match atmospheric and the Fault Clears.
And at what voltage was that?
Just to clarify. Is the ECU happy with 1.4V being simulated but not 1.4V when it's from the sensor?1.4 Volts Confirmed with PP3 and Fluke 123 Scope - and stable, not an average.
Not fluctuating either. Confirmed!
That would be a typo. I am working from memory now. I believe 1.6v is what the sensor output was and 1.4v was what I dialled in to get Measured Values to match atmospheric - circa 1020mB. The correction / drift factor was 200 -250 mV. I did not check to see if that was maintained further up the range or if it compounded.Just to clarify. Is the ECU happy with 1.4V being simulated but not 1.4V when it's from the sensor?
I may be getting confused.
Thank you, some good info in your post, I am thinking along the same lines..The pressure reading you got at KOEO is outside the specification and could be someone had been doing some remapping, but it could also be a effect off the changes that are made to the EGR system - I think !.
PM me your email please.Send me on the Flash if you have it handy and Ill have a look at the MAP sensor calibration